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The right-side rearview mirror of Mike's car says that objects in the mirror are closer than they appear. Mike decides to do an experiment to determine the focal length of this mirror. He holds a plane mirror next to the rearview mirror and views an object that is 165 cm away from each mirror. The object appears 3.25 cm wide in the plane mirror, but only 1.83 cm wide in the rearview mirror. What is the focal length of the rearview mirror?
___ cm
An electric vehicle starts from rest and accelerates at a rate a1 in a straight line until it reaches a speed of v. How much time elapses from start to stop
A piece of radium has an activity of 18 mCi. What is the mass of the radium
A large turntable rotates about a fixed vertical axis, making one revolution in 5.00 s. What is the angular speed of the turntable when the child is 2.50 from the center, assuming that you can treat the child as a particle
Ten days after it was launched toward Mars in December 1998, find the potential energy of the earth-spacecraft system
q1. a 60 m ladder leans against a wall. what is the minimum force of friction essential to prevent the ladder from
On your first trip to Planet X you happen to take along a 215 mass, a long spring, a meter stick, and a stopwatch. You're curious about the free-fall acceleration on Planet X, What is the value of gravity
A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.884 A) sin [(333 Hz)t]. What is the average power delivered to the light bulb
An object in simple harmonic motion has an amplitude of 0.377 m and an oscillation period of 0.620 s. Determine the maximum speed of the motion
A tennis ball on Mars, where the acceleration due to gravity is 0.379g and air resistence is negligible, How fast was it moving just after being hit
A 32g bullet is fired from a rifle at 380 m/s into a water bottle at a pointblank range. The bullet travels completely through the 12 cm long bottle, find the average force exerted by the water on the bullet
Upton Chuck is riding the Giant Drop at Great America. If Upton free falls for 2.6 seconds, what will be his final velocity and how far will he fall
A satellite with a mass of 250 kg moves in a circular orbit 7.00 multiply.gif 107 m above the Earth's surface. What is the gravitational force on the satellite
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