A man fire a bullet with a velocity of 500 m/s velocity upward.( use gravity 10m/s2.
calculate
A the maximum could the bullet rise
B THE VELOCITY OF THE BULLET AT t=10s ,20s and 60s
C. the time require to move up
D. the time of flight
E the height it rise at t=20s
F. the height it rise when first velocity equal to 40 m/s

Answers

Answer 1

The maximum height reached by the bullet is 12,500 m.

The velocity of the of the bullet at 10s is 600 m/s.

The velocity of the of the bullet at 20s is 700 m/s.

The velocity of the of the bullet at 60s is 1,700 m/s.

The time required for the object to move to maximum height is 50.5 seconds.

The height reacted by the bullet at time, t = 20 seconds is 12,000 m.

The height risen by the bullet when the first velocity is 40 m/s is 80 m.

What is the maximum height reached by the bullet?

The maximum height reached by the bullet is calculated as follows;

v² = u² - 2gh

v² = 2gh

h = v² /2g

h = (500²)/(2 x 10)

h = 12,500 m

Velocity of the of the bullet at various time interval

v = u + at

when t = 10 s

v = 500 m/s  +  10(10)

v = 600 m/s

when the time, t = 20 seconds

v = 500 + 20(10)

v = 700 m/s

when the time, t = 60 s

v = 500 + 20(60)

v = 1,700 m/s

Time required for the object to move to maximum height

t = √(2h/g)

t = √(2 x 12,500 / 9.8)

t = 50.5 seconds

Height reacted by the bullet at time, t = 20 seconds

h = ut + ¹/₂gt²

h = (500 x 20)  +  ¹/₂(10)(20²)

h = 12,000 m

Height risen by the bullet when the first velocity is 40 m/s

h = v² /2g

h = (40²)/(2 x 10)

h = 80 m

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Related Questions

A 557 hz tone is sounded at the same time as a 517 hz tone. what is the beat frequency? hz

Answers

When a 557 hz tone is sounded at the same time as a 517 hz tone, the beat frequency would be 40hz.

What does beat frequency mean?

The difference in frequency between two waves is known as the beat frequency. It is as a result of both positive and negative interference. While we perceive the regular frequency of the waves as the pitch of the sound, we perceive the beat frequency as the rate at which the loudness of the sound varies.

What is the formula for beat frequency?

The difference in frequency between the two superimposed waves is the formula for beat frequency.

What is vibration’s beat?

Beat is the pulsing that two waves with slightly differing frequencies combine to create in physics.

Calculation

Beat frequency = | f1 - f2 | or no. of cycles/time

= |557-517|
= 40Hz

Thus, the beat frequency is 40Hz

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A rock is dropped from a cliff and takes 6 seconds to hit the ground. At what time is the acceleration of the rock the greatest?

Answers

The time is 3 seconds

when is something weight less

Answers

Answer:

Weightlessness is simply a sensation experienced by an individual when there are no external objects touching one's body and exerting a push or pull upon it. Weightless sensations exist when all contact forces are removed.

Karen is asked to look at two spots of light and judge which one gets brighter over time. Both spots start out at 100 units of brightness. She notices that the right spot is brighter when it is 110 units. If she is presented with two new spots of light both starting at 300 units, how much brighter will one have to get before she will be able to reliably detect the difference?.

Answers

As spots start out at 100 units of brightness. One of the light spots will have to get 330 units brighter than the other for her to be able to tell the difference.

In the case of the first bulb, she noticed the difference when the right was 0.10 % brighter than the other one.

100  * 0.10 = 10

100 + 10 = 110

If we apply the same sense in the second case, one of the spots will have to be 0.10% brighter than the other.

300 * 0.10=30

300+30 = 330

In order to tell the difference, the other spot should be at 330 units of brightness.

The unit of brightness is Lumen. It is use to calculate the total amount of brightness emitted from a source over a unit of time.

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you are given a vector in the xy plane that has a magnitude of 80.0 units and a y component of -57.0 units. part a what are the two possibilities for its x component?

Answers

The two possibilities for its x component are +56.13 units and -56.13 units.

We are given the resultant magnitude and the y component of a vector.

The x- component of the vector along with the y component and the resultant make a right-angled triangle.

The x - component can be calculated by applying the Pythagoras Theorem

Here the square of the resultant is equal to the square of the y-component and x- component.

(80)^2 = (57)^2 + (x)^2

6400 = 3249 + (x)^2

3151 = (x)^2

X=+- 56.13 units

Hence, the two possibilities for its x component are +56.13 units and -56.13 units.

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Can some one Explain to me how the orbits of the planets around the sun work?
Kepler 2nd and 3rd law are tricky can someone explain?

Answers

Since the powerful gravitational pull of the Sun, all of the the solar system's planets revolve around it. The Sun basically attracts the solar system's planets, encompassing Earth, as well as allows them to be in orbit.

What is Kepler's law?

Kepler's laws of planetary motion was initially published at 1609 and 1619 by Johannes Kepler which implies the description of the main orbits of planets around the Sun.

They explain the following scenarios:

Planets move in elliptical orbits all around the Sun.A planet grab the similar quantity of space in the similar time not relating of the place it is in its orbit.A planet's orbital period is usually proportional to the size of its orbit.

Thus, this way, the orbits of the planets around the sun work.

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A star is moving directly towards earth at a large fraction of the speed of light. How does the light we observe from this star compare to the light received from the same star if it were at rest relative to earth?.

Answers

A star is moving directly toward earth at a large fraction of the speed of light. The light we observe from this star compared to the light received from the same star if it were at rest relative to earth will be blueshifted.

In Physics, this phenomenon is called doppler shift as it refers to the change in frequency of the waves relative to an observer who is moving in relation to that source.

A star coming toward earth emits light that appears to have a shorter wavelength as compared to another source of light.

When the star is moving toward earth, its spectral line shift towards the blue end of the light series.

Since blue light has a shorter wavelength and this occurrence corresponds to the blue end of the light spectrum hence called blueshift.

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4. An expandable container
that contains 500 L of argon
gas has an initial pressure of
1.00 atm. If the pressure was
increased to 4 058 mmHg,
calculate the final volume of
the container. Assume that the
temperature is constant.

Answers

The final volume of the container that contains argon gas at 4058 mm of Hg is 93.80 L.

Given in the question

Initial pressure = 1.00 atm = P1

Initial volume = 500 L = V1

Final Pressure = 4058 mm of Hg = P2

To find

Final Volume = V2

Now, the unit of pressure is different for each case, So we need to convert mm of Hg into atmospheric pressure.

Using unitary method

760 mm of Hg = 1 atm

1 mm of Hg = 1/760 atm

1×4058 mm of Hg = 1/760 × 4058 atm

4.058 mm of Hg =  4058/760 atm

4.058 mm of Hg =  5.3 atm

Now as it is given in the question that the temperature remains constant, we can apply Boyle's law.

By using Boyle's law

P1V1 = P2V2

Put in the value

(1.0)(500) = (5.3)(V2)

V2 = 500/5.3

V2 = 93.80 L

Therefore, the final volume of the argon gas at 4058 mm of Hg is 93.80 L.

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The height that you can jump has an inverse relationship to the
gravitational field strength. When the field strength doubles, the height halves.
The gravitational field strength on the surface of Mars is 3.8 N/kg. If the Olympic
Games were held on Mars in a large dome to provide air to breathe, what would
happen to the records for:

a) weightlifting (weight in N)
b) high jump (height)
c) pole vault (height)
d) throwing the javelin (distance)
e) the 100 m race (time)?

Answers

Answer:The height that you can jump has an inverse relationship to gravitational field strength. So if the field strength doubles, the height

Explanation:

Determine the mass of precipitate that forms when 125 ml of 0. 222 m aqueous magnesium chloride is mixed with 225 ml of 0. 105 m aqueous sodium phosphate.

Answers

The mass of magnesium phosphate ppt is 2.432 g.

The net ionic equation is:

3MgCl₂ (aq) + 2Na₃(PO₄) (aq) -----> Mg₃(PO₄)₂ (s) + 3Na⁺ (aq) + 3Cl⁻ (aq)

Mass of magnesium chloride = Molar mass × Moles

                                                 = 0.125 × 0.222

                                                 = 0.02775g

Mass of sodium phosphate = Molar mass × Moles

                                              = 0.225 × 0.105

                                              = 0.023625g

According to reaction stoichiometry, magnesium chloride is the limiting reagent.

So, moles of magnesium phosphate that will be formed = 0.02775/3 = 0.00925

Hence, mass of magnesium phosphate ppt = Moles × Molecular weight

                                                                        = 0.00925 × 263

                                                                        = 2.432 g

Therefore, the mass of magnesium phosphate ppt is 2.432 g.

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In an electric motor, how do the permanent magnets and the electromagnet interact?

Answers

Answer:

A coil of wire becomes an electromagnet when current passes through it. The electromagnet interacts with a permanent magnet, causing the coil to spin. Voilà!

Explanation:

A coil of wire becomes an electromagnet when current passes through it. The electromagnet interacts with a permanent magnet, causing the coil to spin. Voilà! and ig Magnetic torque: Permanent magnets generate a flux field in the rotor. The stator generates a field that interacts with the rotor's magnetic field. Changing the position of the stator field with respect to the rotor field causes the rotor to shift. The shift due to this interaction is the magnetic torque.

Calculate the longest wavelength (nm) that can provide an energy of at least 415 kj/mol.

Answers

The longest wavelength (nm) that can provide an energy of at least 415 kj/mol for a signal that is carried down in the consecutive cycles is 6.263 x [tex]10^{38}[/tex] /sec.

What is wavelength?

A waveform is a kind of signal that is carried throughout in space or down a wire that has a wavelength, which is the separation between two identical places in the consecutive cycles.

This length can be mostly defined in wireless systems in metres (m), centimetres (cm), or millimetres (mm).

The wavelength, can also be applied to troughs, is the separation between two wave crests.

This frequency can be measured in cycles per second (Hz), which is the also defined as the quantity of vibrations that cross a specific area in a second (Hertz).

What is Plank's Constant?

The fundamental universal constant that is known as Planck's constant, or also symbolized as H, is the one that establishes the quantum nature of energy and links the energy of a photon to its frequency.

Energy = plank's constant x frequency

⇒ frequency = energy/ plank's constant

= 4.15 x [tex]10^{5}[/tex]/6.626 x [tex]10^{-34}[/tex]

= 6.263 x [tex]10^{38}[/tex] /sec

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A particle having a mass of 1mg has a velocity 1 km/sec, calculate the wavelength of the particle

Answers

The wavelength of the particle is [tex]6.626*10^{-29} cm.[/tex]

What is the wavelength of a particle?Louis de Broglie demonstrated that a particle's wavelength is equal to Planck's constant divided by its mass times its velocity. As a result, the electron in Bohr's circular orbits could be compared to a standing wave, which is a wave that is stationary in space.Using the De Broglie equation, one may determine the wavelength of a moving object: =mvh=1.He proposed that if you know a particle's mass and velocity, you may correlate a wavelength with it. The following is a definition of the de Broglie wavelength: Lambda is the Greek letter for wavelength, while h, Planck's constant, m, and v are the particle's mass and velocity.

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Obtain expressions in component form for the position vectors having the following polar coordinates.

Answers

After transforming the position vectors from polar coordinates to cartesian coordinates, we get -

a) → r = 12.4 m , θ = 170°    ↔     - 12.21 i + 2.15 j

b) → r = 4 cm , θ = 50°   ↔    2.57 i + 3.06 j

c) → r = 20 inches , θ = 210°   ↔    - 17.32 i - 10 j

What does a position vector represent?

A position vector is a vector that is used to represent the position of a point in the coordinate system.

Given are the polar coordinates of three points in two dimensional coordinate system.

In order to convert the polar coordinate (r, θ) into cartesian coordinates

(x, y) use the following relations -

x = r × cosθ

y = r × sinθ

a) → r = 12.4 m , θ = 170°

x = 12.4 x cos (170°) = 12.4 x -0.98480775301 = -12 .21

y = 12.4 x sin (170°) = 12.4 x 0.17364817766 = 2.15

In cartesian form → ( -12.21 i + 2.15 j )

b) → r = 4 cm , θ = 50°

x = 4 x cos (50°) = 4 x 0.64278760968 = 2.57

y = 4 x sin (170°) = 4 x 0.76604444311 = 3.06

In cartesian form → ( 2.57 i + 3.06 j )

c)r = 20 inches , θ = 210°

x = 20 x cos (210°) = 20 x -0.86602540378 = -17.32

y = 20 x sin (210°) = 20 x -0.5= -10

In cartesian form → ( -17.32 i - 10 j )

Therefore, after transforming the position vectors from polar coordinates to cartesian coordinates, we get -

a) → r = 12.4 m , θ = 170°    ↔     - 12.21 i + 2.15 j

b) → r = 4 cm , θ = 50°   ↔    2.57 i + 3.06 j

c) → r = 20 inches , θ = 210°   ↔    - 17.32 i - 10 j

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The books has a mass of 3.5kg. the coefficient of friction between the book and the wall is 0.85.how much force must be applied to keep the book from slliding

Answers

The force that must be applied to keep the book from sliding is 41.17 N.

When a body is pressed against a wall, the four forces act on it, as shown in the image Applied force, Frictional Force, Weight and Normal Force.

To keep the book from sliding, the forces should balance each other in the horizontal and vertical directions. Thus, Applied Force and Normal Force should be equal. And Frictional force and Weight should be equal.

Hence, Applied Force = Normal Force(N)

Frictional Force = Weight (mg)

μN = mg

As applied force = N

μ x applied force = mg

0.85 x Applied Force = 3.5 x 10

Applied Force = 41.17 N

Hence, the force that must be applied to keep the book from sliding is 41.17 N.

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assume there is friction between the wagon and the ground. how do you determine the value of the frictional force, using the y component of the applied force f?

Answers

The value of frictional force, using the y component of the applied force f can be found if the co- efficient of friction is known.

First split the applied force F into its vertical and horizontal components [tex]F_{y}[/tex] and [tex]F_{x}[/tex] respectively

[tex]F_{y}[/tex] = F sin θ

Since there is no vertical movement,

Σ [tex]F_{y}[/tex] = 0

[tex]F_{y}[/tex] + [tex]F_{N}[/tex] - mg = 0

[tex]F_{N}[/tex] = [tex]F_{y}[/tex] - mg

[tex]f_{k}[/tex] = [tex]([/tex]μ[tex])_{k}[/tex][tex]F_{N}[/tex]

Therefore, the frictional force [tex]f_{k}[/tex] can be found only the y components if the co-efficient is known.

Frictional force is the opposing force between two objects. It acts along the surface of the object.

Therefore, the value of frictional force, using the y component of the applied force f can be found if the co- efficient of friction is known.

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a train travels 220km in 1.5 hours. what’s the average velocity?

Answers

Answer:caca

Explanation:

because

146.666667 KMH, round to required amount

A bullet is fired with a velocity of 50m/s at an angle tita to the horizontal.What is the value of tita for maximum range with this velocity. Calculate the maximum range (take g=10m/s).

Answers

Answer:

R = V^2 sin 2 θ / g           range formula

max range occurs at θ = 45 deg

R = 50^2 m^2/s^2 / 10 m/s^2 = 250 m

The maximum value of angle theta for a velocity of 50 m/s will be 11.47 °, where the final velocity of the bullet is zero and the acceleration due to gravity is 10.

What is velocity?

Velocity is a vector quantity measuring the distance covered by an object per unit time. The rate of change in velocity is called acceleration. Velocity have two component one in horizontal axis and other in vertical axis.

For horizontal axis  Vh = V cos∅

for vertical axis Vv = V sin∅.

The final velocity V = u + at.  Where u is the initial velocity.

Here V = 0 thus  u = at.

t = u/a = 50 m/s / 10m/s².

t = 5 seconds.

v = 50 cos∅ = at

∅ = cos⁻¹ (10 m/s² ˣ 5 s)

  = 11.46°

Therefore, the angle theta is probably 11.46°.

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Can one-dimensional motion have zero distance but a nonzero displacement? what about zero displacement but a nonzero distance?.

Answers

One-dimensional motion cannot have zero distance with a non zero displacement.

zero displacement occur but a nonzero distance not.

Distance is known as the total path taken by an object.

Displacement is known as the shortest distance taken or path taken.

Distance have only magnitude where displacement has both magnitude and direction. It cannot have zero displacement with nonzero distance because distance has only magnitude.

There will be zero displacement but  a non zero distance.

In a circular motion because displacement is the shortest distance covered.

One-dimensional motion cannot have zero distance with a non zero displacement.

zero displacement occur but a nonzero distance not.

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What do we call what is transported through a sound wave?

Answers

Answer:

n the first part of Lesson 1, it was mentioned that sound is a mechanical wave that is created by a vibrating object. The vibrations of the object set particles in the surrounding medium in vibrational motion, thus transporting energy through the medium

What can we do with atoms?
A. bond different atoms together
B. cut them into tiny pieces
C. take out all of the protons

Answers

The only possible thing we can do is combine different atoms to form molecules and compounds

so the Correct choice is A

A person riding in an airplane drops a rock out of the door of the plane which is moving at 550 mile/hr. The airplane remains on its original horizontal path and maintains a constant velocity. Where will the airplane be located when the rock hits the ground? neglect air resistance.

Answers

By using uniform motion, the location of the airplane when the rock hits the ground is ( 550 . √(2h/g) + h )miles.

We need to know about the uniform motion to solve this problem. The uniform motion is an object's motion under acceleration. It should follow the rule

vt = vo + a . t

vt² = vo² + 2a . s

s = vo . t + 1/2 . a . t²

where vt is final velocity, vo is initial velocity, a is acceleration, t is time and s is displacement.

From the question above, we know that

vo = 550 mile/h

Find the time taken to hit the ground

s = vo . t + 1/2 . a . t²

h = 0 . t + 1/2 . g . t²

t² = 2h/g

t = √(2h/g)

Find the distance traveled by plane

s = vo . t + 1/2 . a . t²

x = vo . t + 1/2 . a . t²

x = 550 . √(2h/g) + 1/2 . g . √(2h/g)²

x = 550 . √(2h/g) + h

the distance traveled is ( 550 . √(2h/g) + h )miles.

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what is velocity vs time. i need help with my test on edge

Answers

Answer:

See below

Explanation:

It is a graph on the x -y coordinate system with (generally ) the y-axis is labelled 'velocity'   and the x - axis is 'time'   <==== with this, you can look at the time and find the velocity at that time on the graph

Mark is doing a pass to his teammate Dan. Mark is square to Dan; his thumbs are against
his chest and his elbows bent and out. Mark steps toward Dan and releases the ball
towards Dan without fully extending his arms. What type of pass is Mark doing and does
he do the pass correctly?
O Overhead pass: No, he did not bring the ball to his forehead
O Push pass: Yes, he did the pass correctly
O Chest pass: No, he should have fully extended his arms when passing to Dan
O Bounce pass: Yes, he did the pass correctly

Answers

Bounce pass: Yes, he did the pass correctly

What is Bounce passing?The bounce pass is thrown in the same motion, but it is directed at the ground instead of the air. The throw should be made so that the ball lands at the receiver's waist. Some advise trying to toss it 3/4 of the way to the receiver, and it would be a decent starting point. However, each player must experiment to determine the right distance to throw it so that it bounces to the receiver. The distance will be simpler to determine if the pass has a decent and consistent backspin.

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To measure the magnitude of the doppler shift, divide the frequency of sound waves in front of the plane by frequency behind the plane. what do you get?

Answers

We get the speed of the wave when we divide the frequency of sound waves in front of the plane by frequency behind the plane.

Assume the source s, is behind, and the listener l, is in front of the plane. The formula for the doppler effect is given by:

fL=((v±vL )/(v±vS)) fS

Thus, dividing the frequency of sound waves in front of the plane by frequency behind the plane gives the speed of the waves.

where fL is the frequency perceived by the observer (listener),

fS is the frequency of the source,

v is the speed of the waves,

vL the speed of the listener and

vS the speed of the source.

The Doppler Effect is the shift in observed frequency of a wave caused by the movement of the source or detector relative to the transmitting medium. The Doppler Effect happens when a wave source and/or observer move relative to one other, resulting in the observer measuring a different frequency of the waves than the source. In essence, this effect happens majorly in two scenarios, a stationary observer and a moving source or a moving source and a stationary observer.

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a cart rolling SW at a velocity of 10 m/s comes to a stop in 2 seconds. What is the car's acceleration?

Answers

Answer:

Acceleration is 5m/s^2.

Explanation:

Acceleration = Change in velocity per unit time.

Therefore, Acceleration a = (10m/s)/(2s)

(10m/s)/(2s) = 5m/s^2

an object moving in 1-dimension along a horizontal surface denoted as the x-axis. the object is initially moving in the positive x-axis direction and the rate of energy decrease of the object is proportional to the square of its speed.

Answers

The acceleration of the moving object can be defined by [tex]a_x = mv^{2} _0 * \lambda/(\lambda v_0t + m)^{2}[/tex].

What is acceleration?

In physics, acceleration is the rate at which the velocity of an object changes over time. They are vector quantities and accelerations. The direction of the net force acting on an item determines the direction of its acceleration.

Acceleration is the rate at which the speed and direction of a moving object change over time. A point or object is going ahead directly when it accelerates or decelerates.

the question is incomplete

An object moving in 1-dimension along horizonta surface denoted as the x-axis. The object is initially moving in the positive X-axis direction and the rate of energy decrease of the object is proportional to the square of its speed dE ~Avz In this equation A is a constant with units of kglm_ The speed of the object at b 0 s is Vo: What is the speed of the object as function of t > 62 HINT: since the object is moving along horizontal surface its energy is simply its kinetic energy: Substitute the equation for kinetic energy into the above differential equation for energy to determine the acceleration of the object:

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a spherical balloon has a surface charge density of omega on its outer surface and ahs radius a what is the electric field outside of the balloohn at all points in space

Answers

The electric field outside the balloon at all points in space is ω/ε where ω = Q/4πa^2.

To find the electric field(E) due to a symmetrical surface, Gauss’ Law is used, which is

E x (ds) = q/ε

Here ds = surface area of the surface

And Q = charge enclosed by the surface

As the balloon is spherical with radius a, its area will be 4πa^2

Putting the values in the above equation

E x 4πa^2 = Q/(ε)

E = Q/4πa^2(ε)

The surface charge density(ω) = Q/4πa^2

Hence

E = ω/ε

Thus, The electric field outside the balloon at all points in space is ω/ε where ω = Q/4πa^2.

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If 1 grain of rice is weighing 0.75g and travels at the velocity of 7.5 meter per second(m/s) against the air friction resistance of 42 newtons (n), how long until it loses momentum and falls to the ground with account of the earth's gravitational pull?

Answers

In 0.134 milliseconds the rice will lose its momentum.

We need to know about momentum to solve this problem. Momentum can be defined as the degree of difficulty to stop a moving object. It can be determined by

P = m . v

where P is momentum, m is mass and v is velocity.

change in momentum also can be defined by the impulse which can be defined as

ΔP = F . Δt

where F is force and Δt is interval time

From the question above, we know that:

m = 0.75 g

m = 7.5 x 10¯⁴ kg

v = 7.5 m/s

F2 = 42 N

Find the interval time

ΔP = F . Δt

m . v = 42 . Δt

7.5 x 10¯⁴ . 7.5 = 42 . Δt

Δt = 1.34 x 10¯⁴ second

Δt = 0.134 millisecond

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23.2727272727.

Used a short video to find it.

In chloroplasts,


from the air is converted into

Answers

Through photosynthesis, the plant creates glucose, a type of sugar, from water and carbon dioxide from the air.

What is the function of chloroplasts?

Chloroplasts, a type of organelle found in plant cells, convert light energy into chemical energy that is relatively stable through the photosynthetic process. They maintain life on Earth in this way.

Chlorophyll stands out among the many kinds of pigments found in nature because it gives plants the ability to absorb the energy they require to develop tissues.

Chlorophyll is found in the plant's microscopic chloroplasts, which are found in its cells. This is where photosynthesis takes place.

Therefore, water and carbon dioxide from the air into glucose.

Learn more about chloroplasts here:

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