You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high.
a. How long does it take the stone to reach the bottom of the cliff?
b. How far from the base of the cliff does the stone hit the ground?
c. What are the horizontal and vertical components of the stone’s velocity just before it hits the ground?

gravity created a solar nebula when 99% of the gas and dust materials were gathered into the center of a flattened disc during the formation of the solar system

The explosion of a flattened disc created waves in space that compressed the cloud of gas and dust.  The cloud is all gravitationally bounded together.  

As the cloud continued to fall inward, the center eventually became so hot that it became a star, the Sun, and blew away most of the new solar system's gas and dust with a powerful stellar wind.

This squeeze caused the cloud to begin collapsing as gravity pulled the gas and dust together to form the solar nebula.

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Im confused on your questions, however they both need each other to work :D

Answer:

Photosynthesis and cellular respiration are processes by which plants and animals use to create energy from food.

Photosynthesis is exclusive to plants only though. It starts with sunlight which goes through the Electron Transport Chains (ETC's) and then through a cycle known as the Calvin-Benson cycle to create glucose.

Cellular respiration (cell resp) takes the glucose made in photosynthesis (or in the case of humans, from our food) and takes it through the Krebs cycle (sometimes referred to as the Citric Acid cycle) to create Adenosine Triphosphate (ATP) which is used to give us energy.

Hope that helps.

The 5.00 grams of oxygen gas (O₂) is the limiting reagent and the mass of aluminum oxide formed is 10.6 g.

The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stop.

3O₂ + 4Al  → 2Al₂O₃

combining ratio of the elements;

O = 3

AL = 4

In the reaction above, 5.0 g of oxygen will be completely used, since it has the smaller combining ratio.

3O₂  ---------------> 2Al₂O₃

3(16 x 2) ------> 2(27 x 2   + 16 x 3)

96 ------------------>  204

5 -------------------> ?

= (5 x 204)/96

= 10.6 g

Thus, the 5.00 grams of oxygen gas (O₂) is the limiting reagent and the mass of aluminum oxide formed is 10.6 g.

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The magnitude of the acceleration of the block at this instant is 1.11m/s².

Given here the dimension of the block 1×2×3m, so the volume = l×b×h =6m3 and density = 600kg/m³

Mass of the block can be calculated as, m= volume × density = 600×6=3600kg.

Now, we calculate magnitude of force which is given by,

∑Force = F buoyant – ∑F drag- ∑F gravity

Force = 6×104 -2×104 – 3600× 9.8 =3600 ×a

On calculating this, we get

a= 1.11m/s².

Thus, the magnitude of acceleration is found to be 1.11m/s².

Buoyant force, is an upward force applied by a fluid against the weight of an object that is partially or completely submerged. The weight of the fluid on top causes pressure in a fluid column to rise with depth. If the buoyant force acting on an object is greater than the gravitational force then object will float, if gravitational force is greater than buoyant force then object will sink or drown.

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The car in a time of 4 seconds will travel a distance of: 32 m

The formulas for uniformly varied rectilinear motion (UVRM) and procedures we will use to solve this exercise are:

Where:

Information about the problem:

Applying the acceleration formula we have:

a = (vf - vi) /t

a = (0 m/s - 16 m/s) /4 s

a = (-16 m/s) /4 s

a = -4 m/s²

Acceleration is negative because the car is decelerating

Applying the distance formula, we get:

x = (vf²-vi²)/ (2a)

x = [(0 m/s)²- (16 m/s)²]/ (2 * -4 m/s²)

x = (0 m²/s²- 256 m²/s²)/ -8 m/s²

x =  -256 m²/s²/ -8 m/s²

x = 32 m

It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2

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Taking into account the definition of Avogadro's Number, 5.029×10²⁴ atoms of zinc are in 8.35 moles.

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

Then you can apply the following rule of three: If 1 mole of zinc contains 6.023×10²³ atoms, 8.35 moles of zinc contains how many atoms?

amount of atoms of zinc= (6.023×10²³ atoms× 8.35 moles)÷ 1 mole

amount of atoms of zinc= 5.029×10²⁴ atoms

Finally, 5.029×10²⁴ atoms of zinc are in 8.35 moles.

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After conversion into cartesian coordinates, we can write the position vectors as -

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

Cartesian coordinates are two-dimensional coordinates which are used to represent a point in X-Y plane. They are, in general, written in the form (x, y),  such that x is the horizontal distance of point from origin and y is the vertical distance of point from origin.

Given are the position vectors in polar coordinates of three points in X-Y coordinate system.

It is important to remember the following relations, in order to transform from polar coordinates (r, θ) into cartesian coordinates (x, y) -

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, in two - Dimensional cartesian system, we can write the position vectors as -

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 ball will stop after 6 s.

The initial velocity of the ball is u.

u = 0.2 m/s

Acceleration of the ball is a.

a = 0.05 m/s²

The time interval is t.

t = 6 seconds.

The displacement of the ball at time t is s.

The displacement of the ball at time t is,

[tex]s= ut + \frac{1}{2} at ^{2} [/tex]

[tex]s= 0.2 \times 6+ \frac{1}{2} \times ( - 0.05) \times (6)^{2} [/tex]

[tex]s= 0.3 \: m[/tex]

Therefore, the displacement of the ball at time t is 0.3 meters.

The time at which the ball will stop is,

Distance = Speed × Time

0.3 = 0.05 × Time

Time = 6 seconds.

Therefore, the ball will stop after 6 s.

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The y-component of the vector is 13.24 m.

Vector components allow us to break a single vector quantity into two or more scalar quantities with which we have more mathematical experience.

The two component of a vector include;

The component of a vector that acts in horizontal direction is known as x-component of the vector.

The component of a vector that acts in vertical direction is known as y-component of the vector.

The y-component of the vector is calculated as follows;

Vy = V sinθ

Vy = 55.1 m x sin(13.9)

Vy = 13.24 m

Thus, the y-component of the vector is 13.24 m.

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The complete question is below:

a vector is 55.1 m long pointing in a 13.9 degree angle. Find the y-component of the vector.

Antelope's acceleration as it passes the second point is 1.65 m/s².

Speed: The ratio of distance to time can be used to quantify speed. M/s is the S.I. unit of speed.

Newton's equation of motion yields the following: S = (v+u)t/2.

u is the starting speed, v is the final speed, and S is the distance.

Given: v = 16.0 m/s, t = 7.10 s, S = 72 m.

making u the subject of the equation,

7.1(16+u) = 72×2

113.6+7.1u = 144

7.1u = 144-113.6

7.1u = 30.4

u = 30.4/7.1

u = 4.28 m/s

Thus the speed at the first point = 4.28 m/s .

The rate at which velocity changes is known as acceleration. M/s2 is the SI unit of acceleration.

a = (v-u)/t............................ Equation 2: acceleration is given by a.

v = 16.0 m/s, u = 4.28 m/s, and t = 7.10 s are given.

Replace in equation 2

a = (16-4.28)/7.1

a = 11.72/7.10

a = 1.65 m/s²

Thus the acceleration = 1.65 m/s².

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Surface Charge density on each plate  sigma =+- Q/a = +4.9×10²⁴/4.6×10⁻²C/m² and Electric field is found to be 0.12×10³⁸N/C.

Given, here the cross sectional area of the conducting plate (A)

A = 460 cm² = 460 x 10-4 m² = 4.6 x10-²m² and distance between plate, d = 4.0 cm = 4x10² m²

Charge on the plate, Q = ne ,where n= 1×10¹²

Q = ± 10¹² x4.9x 10¹²c = ± 4.9x 10²⁴ c

Now, we have to find charge density on each plate  sigma =+- Q/a = +4.9×10²⁴/4.6×10⁻² C/m²

σ= 1.09× 10²⁶ C/m²

Now we have to find electric field between the plates.

E= σ /E°= 1.09× 10²⁶/ 8.85×10⁻¹²

E= 0.12×1038N/C

Charge density is a measure of the amount of electric charge present in a space per unit volume in one, two, or three dimensions. The quantity of electric charge per surface area or volume, respectively, is known as the linear surface or volume charge density.

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If the starship drops the engine force output to 3000 N of force he ship's acceleration going to be at acceleration, a = 4.28 m/s².

In the given equation we can see the different force working on engine so,

To find the acceleration first we need the mass of engine

Using formula,

F = m x v

10,000 - 3000 N = m x 10 m/s

7000N = m x 10 m/s

m = 700 kg

Now as we have mass of the engine,

By the formula,

a = F / m

F = 3000 N

m = 700 kg

So, putting values we have :

a = 3000 / 700

a = 4.28 m/s²

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The mass of the object is obtained as 130 g.

The triple beam balance is the kind of balance that could be used to measure the mass of a substance. There are so many kinds of balance that could be used in science and these include;

1) beam balance

2) Spring balance
3) unequal arm balance

We read the mass of the object by looking at all the points that we have set on the triple beam balance to achieve the balance point. In the case of the substances that we have seen in the image of the question, the mass of the object is obtained as 130 g.

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The equilibrium temperature is required and to find whether the temperature change can be measured by a thermometer is required. The temperature is 310 K.

A physical measure that describes how hot a substance or radiation is is called temperature.

There are three different types of temperature scales: those, like the SI scale, that are defined in terms of the average translational kinetic energy per freely moving microscopic particle, like an atom, molecule, or electron, in a body; those that only rely on strictly macroscopic properties and thermodynamic principles, like Kelvin's original definition; and those that are defined by practical empirical properties of particulates rather than by theoretical principles.

With a thermometer, temperature is measured. It is calibrated in a number of temperature scales that historically defined themselves using different reference points and thermometric substances. The Celsius scale, originally known as "centigrade," is the most popular scale.

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The required electric field in the equipment is  35.77 * [tex]10^{17}[/tex] N/C.

We know that,

E = F / q

where,

E = Electric field

F = Electric force

q = Charge of electron

Given that,

F = 10e - 14 N = 13.18 N

No. of electrons = 23

q = 23 * 1.602 * [tex]10^{-19}[/tex] = 36.846 * [tex]10^{-19}[/tex] C

E = 13.18 / 36.846 * [tex]10^{-19}[/tex] = 35.77 * [tex]10^{17}[/tex] N / C

Protein electrophoresis is a test used to measure specific proteins in blood. The separation of proteins is based on their electric charge.

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Ammonia is a weak base and Potassium hydroxide is a strong base, then then the solution of potassium hydroxide will always have a higher pH than a solution of ammonia, therefore the correct answer is option C.

A chemical compound is a combination of two or more  either similar or dissimilar chemical elements.

As given in the problem, ammonia is a weak base. Potassium hydroxide is a strong base then we have to find out which statement is correct from the given list of statements,

Since ammonia is a weak base and potassium hydroxide is a strong base, their solutions will always have a higher pH than ammonia solutions. Option C is the right response.

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Answer:

77ruririfusjd u 6r7r u y9r8

The major problem in a least developed country according to me is probably the low per capita income.

The problems that a less developed country faces are:

A lot of these countries have poor infrastructure for other sectors than primary sector ( Eg. Agriculture, fishing etc. ). This results in exploitation of natural resources with less per capita income ( Amount of money earned per person in a region ). This leads to crippling debts, not just as a person, but as a whole nation.

Therefore, the major problem in a least developed country is probably the low per capita income.

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The substante that is insoluble and floats is the wood chip and the one that is insoluble is a sugar cube.

Solubility is a property that a substance has to dissolve in another that is called a solvent, this can also depend on the conditions of the temperature to which the solution can be exposed and also the pressure. The solubility will depend on the properties of each of the components, it is not always the same in all types of solutions.

When no more of the solute can dissolve in a solution, the solution is said to be saturated.

Therefore, we can confirm that the substante that is insoluble and floats is the wood chip and the one that is insoluble is a sugar cube.

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A girl delivering newspapers covers her route by traveling so resultant displacement is 5 blocks.

Her net x (east-west) displacement is –3.00+0+6.00= +3.00 blocks, while her net y (north-south) displacement is 0+4.00+0=+4.00 blocks.

The magnitude of the resultant displacement is

R= [tex]\sqrt{x^{2} +y^{2} } =\sqrt{3^{2} + 4^{2} }[/tex] = 5 blocks

and the angle made by the resultant

= [tex]\theta[/tex] = [tex]tan^{-2} =[/tex] 4/3

= 53.1°

The resultant displacement is 5 blocks at 53.1°

The term “displacement” refers to a shift in an object’s position. It is a vector quantity with a magnitude and direction. The symbol for it is an arrow pointing from the initial location to the ending place.

For instance, if an object shifts from location A to position B, its position changes.

An object’s displacement is equal to its velocity times its acceleration times its time squared plus one-half (t2).

A scalar quantity known as distance measures “how much ground an object has traversed” while moving.

The term “how far out of place an object is” is referred to as displacement, a vector quantity.

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Answer:

number 3

Explanation:

the effort is almost equal to the load

The tension in the string is 19.8 N.

Find the tension in the string:

The net force on the block will be:

T - Fr = Fnet = ma

Where T is the tension and Fr is the frictional force

T - ukR = ma

Where R is the upwards normal force equal to the block's weight. R = mg

therefore,

T - uk mg = ma

T - 0.2(5 x 9.8) = 5(2)

=> T = (0.2 x 5 x 9.8) + 5(2) = 19.8 N

This is the tension in the string.

For the free body diagram, draw a block and show a rope connected horizontally to it. The tension in the string will be along the rope outwards from the block. Now, the frictional force will be between the ground and the block and it will be in the opposite direction to the direction of tension of the rope. The force due to gravity will act vertically downwards while the normal force R will act vertically upwards.

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Answer:

penalty

Explanation:

Penalties can gain your team yards if assessed against the opposition...their are multiple penalties which are assessed 10 yards

Based on the problem, the distance between two parallel conducting plate is x=10cm=0.10mx=10cm=0.10m

a)

The potential difference is V= 593VV= 593V

The distance between is d=7.05cm= 0.705md= 7.05cm= 0.705m

Recall the expression for the electric field.

E= VdE= Vd

Substitute the given values in above equation.

E= 5930.705= 841.13V/ mE =5930.705 = 841.13V/Vmm

Thus, the electric field strength is 841.13V/m.841.13V/Vmm.

b)

Recall the term for the voltage between the plate.

ΔV= E× x ΔV= E×x

Substitute the given values in above equation.

ΔV=841.13V/m×0.10m=84.11VΔV=841.13V/Vmm×0.10m=84.11V

Thus, the voltage within the plate is 84.11V.

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Answer:

450

Explanation:

I think answer is 450.

They have a lower-than-normal magnifying power. is the correct answer.

Whatever your objective, a binocular tripod enables you to focus and stay there regardless of the wind or other environmental circumstances. You can see various regions simultaneously by using a tripod to hold several lenses in focus at once. Work your way down from the top of your head to get the appropriate tripod height. About four to five inches separate your eyes from the top of your head. The tripod head is roughly 4 to 4.5 inches high, and the telescopic eyepiece is about 4 inches above the bottom of the mount plate.

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the frequency of each wavelength of electromagnetic radiation is

A)frequency of wavelength 632.8nm(red light from helium–neon laser)

is 4.738×10¹⁴ s⁻¹

B)frequency of wavelength 503 nm (maximum solar radiation)

is5.960×10¹⁴ s⁻¹

C)frequency of wavelength 0.052nm (medical x-rays)

is5.765×10¹⁸s⁻¹

A)

632.8 nm (wavelength of red light from helium–neon laser)

1 nm = 10⁻⁹ m

632.8 nm = 632.8×10⁻⁹ m = 6.328×10⁻⁷ m

The speed of light is c = 2.998×10⁸ m/s

λ = 6.328×10⁻⁷ m

the frequency can be calculated as

ƒ = c / λ

ƒ = (2.998×10⁸m/s) / (6.328×10⁻⁷ m)

ƒ = 4.738×10¹⁴ s⁻¹

frequency of wavelength 632.8nm is 4.738×10¹⁴ s⁻¹

B)

503 nm (wavelength of maximum solar radiation)

1 nm = 10⁻⁹ m

503 nm = 503×10⁻⁹m = 5.03×10⁻⁷ m

c = 2.998×10⁸ m/s

λ = 5.03×10⁻⁷ m

the frequency can be calculated as;

ƒ = c / λ

ƒ = (2.998×10⁸ m/s) / (5.03×10⁻⁷m)

ƒ = 5.960×10¹⁴ s⁻¹

frequency of wavelength 503 nm is5.960×10¹⁴ s⁻¹

C)

0.052 nm (wavelength contained in medical x-rays)

1 nm = 10⁻⁹ m

0.0520 nm = 0.0520×10⁻⁹ m = 5.20×10⁻¹¹m

Where the speed of light is

c = 2.998×10⁸ m/s

λ = 5.20×10⁻¹¹ m

the frequency can be calculated as

ƒ = c / λ

ƒ = (2.998×10⁸ m/s) / (5.20×10⁻¹¹ m)

ƒ = 5.765×10¹⁸s⁻¹

frequency of wavelength 0.052nm is5.765×10¹⁸s⁻¹

A)frequency of wavelength 632.8nm(red light from helium–neon laser)

is 4.738×10¹⁴ s⁻¹

B)frequency of wavelength 503 nm (maximum solar radiation)

is5.960×10¹⁴ s⁻¹

C)frequency of wavelength 0.052nm (medical x-rays)

is5.765×10¹⁸s⁻¹

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The ball was in motion for 16.7 seconds before coming to rest.

Let us assume that the ball was in motion for a time equal to 't' seconds before coming to rest.

Given in the question

Initial velocity = u = 50 m/s

Final Velocity = v = 0 m/s ( As the ball stops moving after some time, its final velocity hence becomes zero. )

Acceleration = a = -3 m/s²

To find

Time = t seconds

Using the first equation of motion,

v = u + at

Put in the value in the equation, we get

0 = 50 + (-3)(t)

3t = 50

t = 50/3

t = 16.66 seconds

t = 16.7 seconds ( rounding off to one decimal place )

Therefore, the ball was in motion for 16.7 seconds before coming to rest.

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(b) the set of points is in a plane

A circle has points in a plane, a center, a radius, and a diameter. Depending on the situation, at least one of the following words must be included in the definition of a circle:

Based on James' definition of a circle, he needed to specify that the points are in a plane (option b).

The phrase "the set of all the points," as he defines it, has a variety of meanings. among them are:

the set of points on a line.

a plane's set of points.

the region's collection of points

James should have made it clear that the collection of points is in a plane.

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The complete question is mentioned below:

James defines a circle as "the set of all the points equidistant from a given point." His statement is not precise enough

because he should specify that

(a) a circle includes its diameter

(b) the set of points is in a plane

(c) a circle includes its radius

(d) the set of points are collinear

The negatively charged electric plate is avoided in favor of the positively charged electric plate by the cathode ray. Thomson was able to estimate the mass-to-charge ratio of the particles by measuring the degree to which the ray was refracted by a magnetic field.

What property of the electron did Thomson measure?

The negatively charged electric plate is avoided in favor of the positively charged electric plate by the cathode ray. Thomson was able to estimate the mass-to-charge ratio of the particles by measuring the degree to which the ray was refracted by a magnetic field.

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