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Driving home from school one day, you spot a ball rolling out into the street. You brake for 1.20 seconds, slowing your 950-kg car from 16 m/s to 9.50 m/s. (A) What was the average force exerted on your car during brake? (B) How far did you travel during brake?
you are in a boat that can move in still water at 7.0 ms. you point your boat directly east across a river to get to
A small charged bead has a mass of 2.0g . It is held in a uniform electric field E? = (200,000 N/C, up). What is the charge on the bead
Explain how far west has the sailboat traveled in 29 ? How far north has the sailboat traveled in 29?
The Earth has an electric field that points toward the center of the earth and that has a magnitude of 150 N/C. How much charge is needed for it to be suspended in the air
A light ray in air is incident on a water (n = 1.333) surface at a 65.0° angle of incidence. find the angle of reflection and refraction
A force of F=9.0i+8.0jN is applied to an object about a fixed axis aligned with the z direction. If the force applied at the point (6.00 m, 9.00 m), illustrate what is the magnitude and direction of the torque?
If there is turbulence inside the pipe, then the required pressure to force the water through is significantly higher, so this is to be avoided.
The orbital speed of Earth about the Sun is 2.90×104 m/s and its distance from the Sun is 1.50×1011 m. find the magnitude of the force exerted by the Sun on Earth
suppose you adjust your garden hose nozzle for a hard stream of water. you point the nozzle vertically upward at a
A29.0 kg wheel, essentially a thin hoopwith radius 1.02 m, is rotating at 280rev/min. It must be brought to a stop in 15.0 s. How much work must be done to stop it
two billiard balls with the same mass m move toward one another. ball one moves in the positive x-direction with a
If one observes a very red celestial object, its color can be due to the temperature if being; a cold star or due to the very high speed which it moves away from us. EXPLAIN how spectral lines can be used to conclude one way or the other
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