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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?
A 65.0-kg person throws a 0.0410-kg snowball forward with a ground speed of 26.0 m/s. What are the velocities of the two people after the snowball is exchanged
An isolated copper sphere of radius 3.00cm, initially uncharged, is illuminated with ultraviolet light of wavelength 180nm. what charge does the photoelectric effect induce on the sphere
The output voltage of an AC source is given by ?v = 120 sin 26.0pt, where ?v is in volts and t is in seconds. Find the frequency of the source
Inductors in parallel. Two inductors L1 = 1.34 H and L2 = 2.20 H are connected in parallel and separated by a large distance so that the magnetic field of one cannot affect the other. Calculate the equivalent inductance
The length of a simple pendulum is .79 m and the mass at the end of the spring is .24 kg. what is the speed of the mass as it passes through the lowest point of the swing
A venturi meter is used to measure the flow speed of a fluid in a pipe. The meter is connected between two sections of the pipe, What is the rate of water flow in cubic meters per second
Suppose you're building a scale model of the hydrogen atom, and the nucleus is represented by a ball of radius 3.2 cm (about the radius of a baseball)
The electron beam Cathodes and anodes An electron gun usually consists of a cathode and an anode. The cathode is a filament that is connected to a potential difference (filament voltage), and the resulting current heats the filament to incandescen..
question a 3.0-kg block is pulled along a frictionless surface with a force of 42n. attached to that block with a light
If you throw a ball upward with an initial speed of 4 m/s at 1.5 m above the ground find the flying time for this free fall motio
A small plane can fly at 150 miles/hr. The pilot heads due north toward his home town on the other side of a rectangular lake 600 miles wide. How long does it take the plane to cross the lake
An engine has an efficiency of 63% and produces 6461 J of work. Determine the rejected heat
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