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Physics Math

09/01/22

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A rectangular airstrip measures 33.00 m by 280 m, with the width, measured more accurately than the length. Find the area (in m2), taking into account significant figures.

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Physics Math

08/31/22

Two boats start together and race across a 58-km-wide lake and back. Boat A goes across at 58 km/h and returns at 58 km/h. Boat B goes across at 29 km/h, and its crew, realizing how far behind it... more

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Physics

08/31/22

Velocity Question

The position of a particle as a function of time is given by x(t) = (4.4 m/s2)t2 - (3.47 m/s3)t3.What is the velocity of the particle, in m/s, at t= 2.26 s?

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Physics

08/31/22

Physics Question

A rocket moves straight upward with an acceleration a(t) = A - Bt1/2, where A and B are constants, and a is in m/s2 and t is in seconds. What are the units of A?

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Physics

08/31/22

Velocity (Vertical Component)

A ball is thrown from a rooftop with an initial downward velocity of magnitude vo = 1.3 m/s. The rooftop is a distance above the ground, h = 42 m. In this problem use a coordinate system in which... more

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Physics

08/30/22

Amazon is experimenting with drone delivery and you are asked to determine a drone's delivery route.

Amazon is experimenting with drone delivery and you are asked to determine a drone’s delivery route. The drone will leave the Amazon warehouse, make two deliveries, and then return to the... more

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Physics

08/30/22

The radius of earth is 3950 miles and oceans cover 69.5% of its surface to an average depth of 12100 feet.

The radius of Earth is 3950 miles, and oceans cover 69.5% of its surface to an average depth of 12100 feet. Calculate the volume of Earth’s oceans in cubic miles, meters cubed, and gallons. Express... more

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Physics

08/30/22

Find the magnitude of the total displacement, in meters, of the rollercoaster

A roller coaster first travels down a straight track at a distance of 42.5 m at an angle of 55.0O below the horizontal. It then continues along a straight horizontal section of the track for a... more

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Physics

08/30/22

Grace is driving her Ford at 75.0 km/h, when she sees a stop sign, 45.0 m ahead, she slows down the car at a rate of 4.50m/s^2. Would Grace be able to stop the car at the stop sign? Explain

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Physics Math

08/29/22

Help me solve this problem!!

A man on a road trip drives a car at different constant speeds over several legs of the trip. He drives for 55.0 min at 75.0 km/h, 17.0 min at 90.0 km/h, and 35.0 min at 45.0 km/h and spends 40.0... more

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Physics

08/29/22

Which of the following charge is not possible to occur?

a) 1.6 x 10^-19Cb) 3.2 x 10^-19Cc) 3.6 x 10^-17Cd) 3.6 x 10^-22CI'm getting D as the answer, is it correct?

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Physics

08/29/22

A thoroughbred racehorse slows down to a stop from 17 m/s, decelerating at a rate of -7.56 m/s2. How long does it take for the horse to slow down?

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Physics

08/28/22

In which case was more work done on the box by the 4.0 N force?

A box is supported by a 4.0 N vertical force and carried 2.1 m horizontally across a room at constant speed. Then, the same box is pushed 2.1 m horizontally across a smooth table (smooth enough to... more

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Physics

08/28/22

What is the net force?

A runner with a mass of 75 kg accelerates from 0 to 7 m/s in 4 s. Find the net force on the runner using the alternate form of Newton's second law.Answer should be in N.

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Physics Math Mathematica

08/28/22

Need help with physics problem

Charge q2 in the figure is in equilibrium. Assume q = 5.4 nC. (+)q1 q ... more

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Physics Math Mathematica

08/28/22

i need help with physics

Two point charges q and 4q are at x=0 and x=L, respectively, and free to move. A third charge is placed so that the entire three-charge system is in static equilibrium.What is the x-coordinate of... more

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Physics Math Mathematica

08/28/22

physics problem

A 0.11 g honeybee acquires a charge of +25pC while flying. The earth's electric field near the surface is typically (100 N/C, downward).What electric field (strength) would allow the bee to hang... more

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Physics Math Calculus Mathematica

08/28/22

Help needed with physics problem

What is the net electric force on charge B in the figure? Suppose that a = 1.6 cm and b = 0.60 cm.^A | (+) 1.0 nC|||| a||B | (-) -2.0 nC|| b|C| (+) 2.0 nC(Express your answer to two significant... more

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Physics

08/28/22

Time and free fall

A helicopter is ascending vertically with a speed of 5.40 m/s. At a height of 105 m above the Earth, a package is dropped from the helicopter. How much time does it take for the package to reach... more

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Physics

08/28/22

Object at rest and fall

An object starts from rest and falls under the influ- ence of gravity. Draw graphs of (a) its speed and (b) the distance it has fallen, as a function of time from t = 0 to t = 5.00 s. Ignore air... more

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Physics

08/28/22

Speed and height reached

A ball player catches a ball 3.4 s after throwing it vertically upward. With what speed did he throw it, and what height did it reach?

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Physics

08/28/22

Free falling objects

A stone is dropped from the top of a cliff. It is seen tohit the ground below after 3.55 s. How high is the cliff?

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Physics

08/28/22

Magnitude of acceleration

A car traveling at 95 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.80 m. What was the magnitude of the average acceleration of the driver... more

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Physics

08/28/22

Constant velocity and acceleration

A sports car moving at constant velocity travels 120 m in 5.0 s. If it then brakes and comes to a stop in 4.0 s, what is the magnitude of its acceleration (assumed constant) in m/s2, and in g’s (g... more

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Physics

08/27/22

Travel time and speed

A car slows down uniformly from a speed of 28.0 m/s to rest in 8.00 s. How far did it travel in that time?

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Help me solve this!!

Help me solve this

Velocity Question

Physics Question

Velocity (Vertical Component)

Amazon is experimenting with drone delivery and you are asked to determine a drone's delivery route.

The radius of earth is 3950 miles and oceans cover 69.5% of its surface to an average depth of 12100 feet.

Find the magnitude of the total displacement, in meters, of the rollercoaster

Grace is driving her Ford at 75.0 km/h, when she sees a stop sign, 45.0 m ahead, she slows down the car at a rate of 4.50m/s^2. Would Grace be able to stop the car at the stop sign? Explain

Help me solve this problem!!

Which of the following charge is not possible to occur?

A thoroughbred racehorse slows down to a stop from 17 m/s, decelerating at a rate of -7.56 m/s2. How long does it take for the horse to slow down?

In which case was more work done on the box by the 4.0 N force?

What is the net force?

Need help with physics problem

i need help with physics

physics problem

Help needed with physics problem

Time and free fall

Object at rest and fall

Speed and height reached

Free falling objects

Magnitude of acceleration

Constant velocity and acceleration

Travel time and speed

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