An object is dropped on earth (g=10m/s/s (meters per second per second or m/s^2)) and it falls for five seconds draw a speed vs time graph

The magnitude and direction of the object's displacement is 7 m and west direction respectively.

The displacement of an object is the change in the position of the object. Displacement is a vector quantity because it has both magnitude and direction.

To find the sum of the vectors, we find the displacement of the vectors.

Initial position of the vector = 10 m east

final position of the vector = 3 m west

displacement of the vector = final position - initial position

displacement of the vector = 3 m - 10 m

displacement of the vector = - 7 m

magnitude of the displacement = 7 m

direction of the displacement = west

Thus, the magnitude and direction of the object's displacement is 7 m and west direction respectively.

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The minimum horizontal velocity required for an object to orbit the earth just above the surface is 5.04 x 10¹⁰ m/s.

The orbital speed of Earth or a natural satellite is the speed at which it orbits around the center of the system.

The minimum orbital speed of the Earth is calculated as follows;

V(min) = √GMR

where;

Substitute the given parameters and solve for the minimum orbital speed of the earth.

V(min) = √(6.67 x 10⁻¹¹ x 5.97 x 10²⁴ x 6.38 x 10⁶)

V(min) = 5.04 x 10¹⁰ m/s

Thus, the minimum horizontal velocity required for an object to orbit the earth just above the surface is 5.04 x 10¹⁰ m/s.

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The velocity of the rain with respect to car is 43.3 km/h and the velocity of the rain with respect to earth is 50 km/h.

Relative velocity is the velocity of one object with respect to another using a frame of reference.

Velocity of the rain with respect to the car

V(rc) = 50 km/h x sin(60)

V(rc) = 43.3 km/h

Velocity of the rain with respect to the earth

V(re) = speed of the car =  50 km/h

Thus, the velocity of the rain with respect to car as frame of reference is 43.3 km/h and the velocity of the rain with respect to earth as the frame of reference is 50 km/h.

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The magnitude of vector B is determined as 24.5 units.

A resultant vector is defined as a single vector that produces the same effect as is produced by a number of vectors collectively.

The given parameters;

The magnitude of vector B is calculated as follows;

B² = R² - A²

where;

B = √(35² - 25²)

B = 24.5 units

Thus, the magnitude of vector B is determined as 24.5 units.

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Science is the study of how the world functions through the systematic process of data collection known as the scientific method.

Repeated trials are when a measurement is performed more than once at least three times, most often five but the more the better.

The likelihood that a measurement made once will yield an accurate result is substantially smaller. However, if you measure it multiple times, you may average the results to produce a value that is considerably more accurate.

In repeated trials, the same thing is measured repeatedly to increase the accuracy of your results. This is essential since data in the actual world frequently varies and nothing is flawless. Your average will get more closely to the genuine value as you perform more trials.

Therefore, Science is the study of how the world functions through the systematic process of data collection known as the scientific method.

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The maximum distance covered by the car from point A to B will be 120 meters, and the minimum distance covered by the car will be 25 meters.

Measuring is the most important scientific concept. Many different types of quantifiable quantities can be measured using base or physical fundamental units. One such quantifiable quantity is speed, which computes the proportion of a moving object's distance travelled to its travel time.

According to the question,

Point A and B are taken on X-axis and point B,C and D are taken on y-axis.

On going from point A to B,

Time taken= 10 seconds

Speed= 12 m/s

Distance covered will be : Speed × time

=12 × 10 sec

Distance= 120 meters

On going from Point B to C,

Time taken= 5 Seconds

Speed= 5 m/s

Distance covered by car will be : Speed × Time

=5 × 5 sec

Distance= 25 meters.

Now, On going from point C to D,

Time taken= 15 seconds

Speed= 2 m/s

Distance covered = speed × time

= 2 × 15 sec

Distance= 30 meters

Hence, the maximum distance covered by car is 120 meters when it goes from point A to B and the minimum distance covered by car is 25 meters when it goes from Point B to C.

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A pen name is the name used by the writer instead of their real name when publishing. This name is called as pseudonym or a fake name. The author's real name is probably known to the publisher, but not to the public.

If I'll be the writer, I'll use Dark Shadow as my pen name.

Dark Shadow effectively acts as a living appendage that obeys his master's every command. It is sentient, capable of speech, and loyally protects its host regardless of its state. Also it is short and sweet name and can be pronounced easily.

Also thee is a drawback in seeking secrecy with the pen name. The Guardian article says, "If you try to keep your identity secret, you can't go to events or festivals; be pictured in newspapers, or be open about your possible success. And, if you become hugely successful, you'll have to come out eventually – as Madeleine Wickham, the author of the Sophie Kinsella books, did. "

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(a) The distance traveled by the driver before stopping is 20.57 m.

(b) When you have traveled only half the distance in part (a), your speed is greater than 6.0 m/s.

(c) The speed of your car when you have traveled half the distance in part (a) is 8.49 m/s.

The distance traveled by the driver before stopping is calculated as follows;

v² = u² + 2as

when the car stops, the final velocity, v = 0

0 = u² + 2as

0 = 12² + 2(-3.5)s

0 = 144 - 7s

7s = 144

s = 144/7

s = 20.57 m

v² = (12²) - 2(3.5)(0.5 x 20.57)

v² = 72.005

v = √72.005

v = 8.49 m/s

Thus, when you have traveled only half the distance in part (a), your speed is greater than 6.0 m/s.

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The 15 km/s velocity is equivalent to 15000 m/s and 54000 km/h.

Velocity is a vector quantity. It consist both a direction and a magnitude. The magnitude of velocity is called speed. Its S.I. unit is a meter/second. It also has other units like Km/h and Km/s. Its dimensional formula is [[tex]LT^{-1}[/tex]].

Given in the question

Velocity is 15 Km over a second

We can infer from the given value that the body moves 15 km per second.

1 Km = 1000 m

1 Km × 15  = 15 × 1000 m

So 15 Km = 15000 m

Hence we can say that the body travels 15000 meters in a second.

As a result, its velocity in m/s is 15000 m/s.

Now

15 kilometers can be covered in 1 second.

Distance traveled in 3600 seconds = 3600 × 15 Km

So the total distance traveled in 3600 seconds is 54000 kilometers.

Also 3600 seconds = 1 hour

In other words, The body travels 54000km in 1 hour, hence its velocity is 54000 km/h.

Therefore, the 15 km/h velocity is equal to 15000 m/s and 54000 km/h.

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If a glass block in the air has a critical angle of 49° and an incident angle of 50°, any light rays entering to the glass will be bent away from the normal  and refraction would be happen.

[tex]\frac{sin_{i} }{sin_{r} } =n[/tex]

In above equation , n is constant, sin i and sin r are the angles of incident and refracted ray for two medium.

Therefore, from the above discussion ,as the incident angle is laser than the critical angle so that the ray of light would be refract away from the normal.

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The acceleration of a car that travels on a straight level road starting from rest and going at 32 ft/s at the end of 4.2s is 7.62ft/s².

The acceleration of a moving car can be calculated by dividing the speed by the time taken as follows:

Acceleration = Speed ÷ time

According to this question, a car travels on a straight level road starting from rest the car is going 32 ft/s (22mi/h) at the end of 4.2s. The acceleration can be calculated as follows:

Acceleration = 32ft/s ÷ 4.2s

Acceleration = 7.62ft/s²

Therefore, the acceleration of a car that travels on a straight level road starting from rest and going at 32 ft/s at the end of 4.2s is 7.62ft/s².

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Since Joe is running towards the goal line and slowing down, the option that describes this motion is negative velocity, negative acceleration.

A negative velocity occurs when an object moves in the negative direction.

Example of negative velocity;

If a car is moving away from you (reference point) then the velocity is positive.

If a car is coming towards you (reference point) then the same vector reverses direction and hence the velocity is negative.

If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion. Thus, the acceleration of the object will be negative.

Thus, since Joe is running towards the goal line and slowing down, the option that describes this motion is negative velocity, negative acceleration.

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A scalar quantity, speed is defined as the size of the change in an object's location over time or the size of the change in an object's position per unit of time.

How far is the motorcycle from the car when it reaches this speed?

When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time.

Acceleration is the rate at which an object's velocity with respect to time changes. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration.

Given,

Speed = 86 km/h

= 86000m/3600 s = 23.89m/s

v = a t

so,

23.89 = 7.1 * t

Therefore, t = 3.36 seconds

Distance car went = 23.89*3.36 = 80.38m

Distance motorcycle went = (23.89/2)* 3.36 = 40.14m

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The energy for the Photon with frequency 4.6 x 10 raise to power 14 Hertz is equal to 3 × 10 raised to power minus 19.

A photon is an elementary particle that is a quantum of the electromagnetic field and the force carrier for the electromagnetic force. Photons are massless, so they always move at the speed of light in vacuum, 299792458 m/s.

Energy equation is a derivative of the energy mass equation and is used to give energy of an electromagnetic or particle have frequency.

Given:

Frequency of the photon = 4.6×10¹⁴

Value of plank constant = 6.626×10⁻³⁴

Now from energy equation we have-

Energy of photon = plank constant × frequency of the photon

E = h × v

Where,

E is Energy of photon

h is plank constant

v is frequency of the photon

On substituting values in the energy equation we get,

E = 6.626 × 4.6×10⁻²⁰

E = 3 × 10⁻¹⁹

The energy for the Photon with frequency 4.6 x 10 raise to power 14 Hertz is equal to 3 × 10 raised to power minus 19.

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Answer:

Mass and velocity are both directly proportional to the momentum. If you increase either mass or velocity, the momentum of the object increases proportionally. If you double the mass or velocity you double the momentum.

Explanation:

From the given graph, it is shown that James is running the race with the same speed while Rachel changes his speed time-to-time. It can be inferred from the graph that James wins the race.

Speed is the distance travelled by an object in a particular time. In the race, James run with a constant speed throughout the race and Rachel changes its speed after some time.

By looking at the graph, we can say that James catch up Rachel 17.5 minutes after the start of the race where they both completed 1750m distance.

Speed of James can be calculated by the formula:

Speed = Distance/Time

Speed = 3000m/30min

Speed of James = 100m/min.

Different speeds of Rachel can be calculated by the same formula:

For the first 1000m he completes the distance in 5 min. therefore, the speed will be:

Speed = 1000m/5min.

Speed = 200m/min.

For the next 1500m. he covers the distance in 25min. therefore, the speed here will be:

Speed = 1500m/25min.

Speed = 60m/min.

For the next 500m. he covers the distance in 5 min. therefore, the speed will be:

Speed = 500m/5min.

Speed= 100m/min.

As, James covers the same distance earlier than Rachel. James cover the the distance in 30 minutes while Rachel covers the same distance in 35 minutes. James will be the winner of the race.

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Answer:

It shapes into the form of the container because water is a liquid.

Explanation:

Answer:

[tex] log( \beta e \alpha \sin( \cot( \sec( \binom{? \times \frac{ \\ \infty }{?} }{?} ) ) ) ) [/tex]

The possible ergonomic solution that could help Daniel reduce hos back pain caused by sitting long on his chair is a standing desk.

Ergonomics is defined as the science of creating a working environment that suits the capabilities and limitations of the worker while providing the best working experience.

If Daniel's physician has told him that he needs to spend less time in his office chair because sitting for so long is causing him to have back pain. The possible ergonomic solution that could help him include the following.

Thus, the possible ergonomic solution that could help Daniel reduce hos back pain caused by sitting long on his chair is a standing desk.

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Answer: B. A standing desk

Explanation: I remember getting it right on my test.

The speed of the mass at the time the tension is measured is 6.12m/s

centripetal force - It is a force which makes a body follow a curved path.

It is directed inward towards center of rotation.

for example - gravitational force of sun is a centripetal force that keeps earth rotating around it.

the centripetal force on the swinging mass

Fc = mv²/r

where Fc is the centripetal force

m is the mass of body

v is the velocity

r is the radius

m = 1.5

r = 2.3 m

F = 24.5 N

To calculate the speed we put values in above equation

Fc = mv²/r

v = sqrt(Fc x r / m)

v = [tex]\sqrt[]{\frac{F *m}{r} }[/tex]

[tex]v = \sqrt[]{\frac{24.5*1.5}{2.3} }[/tex]

v = 6.12m/s

The speed of the mass at the time the tension is measured is 6.12m/s

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The distance travelled by the motorbike while it is moving at a constant speed is 150m

From the graph, we form the relationship between the speed s and the change in the time t for the journey, i.e. from t = 20sec to t = 30sec speed  s is constant = 15m/s

As the formulae states that

Speed = Distance / Time

Distance = Speed × change in time

⇒15 × ( 30 - 20 )

⇒15 × 10

⇒150m

Hence the Distance travelled by bike was 150m

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The statement ' The hemisphere tilted towards the Sun experiences summer and the hemisphere tilted away from the Sun experiences winter.' is true.

The variation in seasons is due to the slight tilt of the earth on its axis towards the sun. This tilt is approximately equal to 29 and 1/2 degrees.

Due to this tilt of the earth, the north pole or the south pole of the northern or the southern hemisphere respectively never directly faces the sun.

But when the respective hemisphere is tilted towards the sun, it is as close to the sun as it is physically possible, and therefore that hemisphere experiences the summer season.

Whereas the other hemisphere which is tilted away from the sun is as far from it as possible and receives very little sunlight and hence experiences the winter season.

In the context of the above discussion, the statement ' The hemisphere tilted towards the Sun experiences summer and the hemisphere tilted away from the Sun experiences winter.' is true.

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Answer:

19.6 Newtons

Explanation:

[tex]\displaystyle \textsf{The weight of the block is W= mg where m is the mass and g the acceleration due to gravity}[/tex]

[tex]\sf W = 5kg, \; and\; g = 9.80 m/s^2[/tex]

[tex]\sf W = 5 x 9.8 = 49\; Newtons[/tex]

[tex]\textsf {If the coefficient of static friction is } $\mu_s$, the force to be applied for the block to slip is given by the equation}:\\\mathsf {f_s = \mu_s \times W}\\\\\textsf {So force required, given $\mu_s$ = 0.4 is: }\\\\\\\mathsf {f_s = 0.4 \times 49 = 19.6 } \textsf{ Newtons }[/tex]

Dean's acceleration while slowing down on his skateboards a = -1.5 m/s².

To find the acceleration of skateboards

Using formula,

a = Δv/Δt

where,

a is acceleration

Δv is change in speed

Δt is time

By putting the given values,

a = 1.0 m/s - 5.5 m/s / 3 s

a = - 4.5 m/s / 3s

a = -1.5 m/s²

When an object is moving in a positive direction, the acceleration is negative, but the rate of change of velocity is positive (velocity is decreasing). When an object moves in the reverse or opposite direction, we can define these two accelerations as well (right to left).

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When an object is traveling at a constant speed, the acceleration is 0 m/s².

If an object covers an equal amount of distance in equal interval of time, then the body is said to be moving at a constant speed.

F - ff = ma

where;

During constant speed, acceleration = 0

Thus, when an object is traveling at a constant speed, the acceleration is 0 m/s².

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Answer:

5.2s

Explanation:

We care about the vertical component of the velocity, which, in our case, is [tex]v_y=55 sin 68\° m/s \approx 51 m/s[/tex]. The projectile is affected by gravity, which means its velocity will decrease by [tex]g= 9.81 m/s[/tex] each second. Remembering that at maximum height velocity is zero, we can write [tex]0=51-9.81 t \rightarrow t= \frac{51}{9.81}\approx 5.2s[/tex]

Answer:

maximum velocity,then u draw your diagram then u calculate for max velocity then the answer u get use it for total shape

Answer is

Elements are pure substances which are composed of only one type of atom. Compound are substances which are formed by two or more different types of elements that are united chemically in fixed proportions.

Explanation:

I think that's the correct answer sorry if im wrong

The distance from the home plate the fielder will be when he catches the ball is 63.47 m

From the question given above, the following data were obtained:

The distance (i.e range) the fielder will be when he catches the ball can be obtained as follow:

R = u²Sine(2θ) / g

R = 26.8² × Sine (2×60) / 9.8

R = 622.014 / 9.8

R = 63.47 m

Thus, the distance the fielder will be is 63.47 m

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(a) Capacitance = 4.43 * 10⁻¹¹ F

(b) Magnitude of the charge on each plate = 2.9238 * 10⁻⁸ C

(c) Stored Energy = 8.7714 * 10⁻⁶

(d) The electric field between the plates = 6.0 * 10⁴ V/m

(e) The energy density between the plates = 1.45 J/m³

(A) The ability of a conductor or group of conductors to store a separated electric charge for a given change in electrical potential is known as its capacitance. The term "capacitance" also suggests the storage of electrical energy.

Capacitance (C) = A∈ / d = [tex]\frac{55 * 10^{-4}* 8.86 * 10^{-12}}{0.011}[/tex] = 4.43 * 10⁻¹¹ F

Therefore, Capacitance = 4.43 * 10⁻¹¹ F

(B) The force per charge on any particular test charge situated within the electric field is used to calculate the electric field vector's magnitude. Either the source charge or the test charge could be directly affected by the force acting on it.

The magnitude of the charge on each plate (Q) = CV

Q = 4.43 * 10⁻¹¹ * 660 = 2.9238 * 10⁻⁸ C

Therefore, the magnitude of the charge on each plate = 2.9238 * 10⁻⁸ C

(C) The energy that a thing retains due to its position in relation to other objects, internal tensions, electric charge, or other causes is known as stored energy.

Stored Energy (U) = 0.5 CV² = 8.7714 * 10⁻⁶ J

Therefore, Stored Energy = 8.7714 * 10⁻⁶ J

(D) The region or place where the influences of the plates' charges are visible is the electric field between the plates. For instance, any charged plate will produce an electric force to either attract or repel a charged particle if it is placed close to it.

The electric field between the plates (E) = V / d = 660 / 0.011 = 6 * 10⁴ V/m

Therefore,  The electric field between the plates = 6.0 * 10⁴ V/m

(E) The quantity of energy that can be held in a specific system, substance, or area of space is known as its energy density. Energy per volume or mass can be used to measure energy density. A system or material has more energy stored in it when its energy density is higher.

The energy density between the plates (u) = U / Ad = [tex]\frac{8.7714 * 10^{-6} }{(55 * 10^{-4}) (1.1 * 10^{-3})} = \frac{0.0000063}{0.0055 * 0.0011} = \frac{0.00000878}{0.00000605} = \frac{878}{605} = 1.45 Jm^{3}[/tex]

Therefore, The energy density between the plates = 1.45 J/m³

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