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You travel 6m west and then 8m north all in 5 seconds. what is your average speed?
When switch S in the figure is open, the voltmeter V of the battery reads 3.10V . When the switch is closed, the voltmeter reading drops to 2.96V, Find the emf
The convex lens of a copy machine has a focal length of 25 cm. A letter to be copied is placed 40.0 cm from the lens.
A man stands on the roof of a building of height 16.8m and throws a rock with a velocity of magnitude 31.8m/s, Calculate the magnitude of the velocity of the rock just before it strikes the ground
A uniform electric field with a magnitude of 5650 N/C points in the positive x direction. Obtain the change in electric potential energy when a +16.0 μC charge is moved 4.50 cm in the negative x direction
The windshield of a speeding car hits a hovering insect. Consider the time interval from just before the car hits the insect to just after the impact. Which of the following are right.
A 94.0-μF capacitor is connected to a generator operating at a low frequency. The rms voltage of the generator is 4.10 V and is constant. A fuse in series with the capacitor has negligible resistance and will burn out when the rms current reaches ..
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0894 s, estimate the vertical components of the launch velocity
A point charge of +5.6 µC is placed 0.39 meter from a second point charge of -6.0 µC. Obtain the absolute magnitude of the force on each charge
a ball of mass 8.0 g with a speed of 20.5 ms strikes a wall at an angle 21.0o and then rebounds with the same speed and
frictionless surface and are pushed together with a compressed spring between them. The spring has a spring constant of 154 N/m and the spring is compressed a distance of 2.5 m.
Through an adiabatic process, the temperature of 3.62 {\rm mol} of a monatomic ideal gas drops from 480{\rm ^\circ C} to 240{\rm ^\circ C}. Discover the heat the gas exchanges with its surroundings
A 3.9kg ball with a velocity of 3.2m/s in the +x-direction collides head-on elastically with a stationary 1.5kg ball. What is the speed of the first ball after the collision
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