12,795 Answered Questions for the topic physics

Physics

09/05/22

Find the acceleration of the train, in m/s^2
You are stuck at a railroad crossing with nothing to do but watch the train cars roll by. You notice that one car takes 3.67 seconds to pass you, but the next car takes 3.27 seconds to pass you.... more
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Physics Calculus

09/05/22

Rotation of an object using cross product
Given a rigid body that is rotating about a fixed axis with constant angular speed ω, the angular velocity vector ω is defined as the vector with magnitude ω whose direction is parallel to the axis... more
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Physics

09/04/22

The distance the jet traveled along the runway.
Preparing for take-off, a jet starts at rest on the runway. The pilot fires up the engines, which accelerate the jet at a rate of 3.81 m/s2. The jet lifts off the runway as it reaches a speed of... more
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Physics

09/04/22

Find the speed of the car, in m/s, as it reaches the red light

The driver of a car traveling at 22.9 m/s sees a yellow light ahead. The car is 37.7 m from the light when the light turns red. At that moment, the driver applies the brakes as hard as possible,... more
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Physics

09/04/22

Find the refracted angle.
The refractive index of glass in 1.5. A ray of light is transmitted from air to glass at an angle of 42. Find the refracted angle.
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Physics

09/04/22

The gravitational potential energy of a body depends on...
The gravitational potential energy of a body:1) depends on the fluid that surrounds the body2) does not depend on the mass of the body3) depends on the body temperature4) depends on the chosen... more
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Physics

09/04/22

Physics Question
Dear experts, Im having trouble answering the following question:If the potential difference across an ohmic conductor is halved, the dissipated power:1) increases by a factor of 42) decreases by a... more
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Physics

09/03/22

Can you please help me with this problem??
A snail moves with an average velocity of 0.01 ms^-1 . How much time will it take the snail to travel a distance of one mile? A mile is roughly 1.6 kilometer.a- More than 44 hours.b- 160 sec.c-... more
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Physics

09/03/22

High school physics momentum
If a 22 g bullet, shot straight up into the air, reaches an altitude of 4.59 km, what is the recoil velocity of the 3 kg rifle.answer: -2.2 m/s
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Physics

09/03/22

High school physics momentum
A 3.2 kg object is dropped from a height of 3.4 m. what is the momentum (in kgm/s) after 0.22 seconds?the answer is 6.49 kgm/s, plz show work
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Physics

09/03/22

Determine the value of the voltage v in Figure P 3.4-9
Here is a figurehttps://im.ge/i/ObwwmS
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Physics

09/01/22

Find the energy equivalent to the spilled oil in joules
in 2010, a well being filled from the deep water horizon platform in the golf of Mexico blew out, spilling some 5 million barrels of oil into the water over three months. Find the energy equivalent... more
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Physics

09/01/22

Three point charges are arranged in a horizontal line as shown below.
Three point charges are arranged in a horizontal line as shown below. Find the electric forces (in units of kQ2/R2) on the charges given the following: Q1 = 2 Q, Q2 = 125 Q, Q3 = 108 Q, r1 = 1 R,... more
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Physics

09/01/22

What is the magnitude of the electric field of a proton at a distance of 25 micrometers?
What is the magnitude of the electric field of a proton at a distance of 25 micrometers? Remember, the charge on a proton is 1.6e-19 C. (This is given on your formula sheet.) (in units of N/C)
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Physics Math

09/01/22

Help me solve this!!
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

Help me solve this
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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