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A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is18 m/s at an angle of 74 degree above the horizontal. At the instant when the kit is caught, it is traveling horizontally, therefore its vertical speed is zero. Find the vertical height between the two climbers?
A boy stands at one end of a floating raft that is stationary relative tot he shore. he then walks in a straight line tot he opposite end of the raft, away from the shore. does the raft move? explain.
Astronauts on a distant planet set up a simple pendulum of length 1.2 m. The pendulum executes simple harmonic motion and makes 100 complete oscillations in 370 s. What is the magnitude of the acceleration due to gravity on this planet?
if the average volume flow of blood through the aorta is 9.4 x 10-5 m3s and the cross-sectional area of the aorta is
A 420g , 6.50-cm-diameter solid cylinder rolls across the floor at 1.40m/s, What is the can's kinetic energy
What is the average value of the orbital angular momentum, L, for the hydrogen atom if the electron is in the 3d orbital? Note that the average value of L can be written as = ^(1/2).
You're listening to a loudspeaker with an initial output of 50 watts, and someone turns it up to 100 watts. Will the music sound more than, less than, or exactly twice as loud as before?
A 525-ohm resistor and a 295-mH inductor are connected in series with an ac generator with an rms voltage of 20.0V
A 30-meter steel tape is correct at a temperature of 20.0(C). The distance between two points, as measured by this tape on a day when the temperature is 5 (C), is 25.970m. What is the true distance between the points?
Two converging lenses, each of focal length 15.1 cm, are placed 40.4 cm apart, and an object is placed 30.0 cm in front of the first lens. What is the magnification of the system
What fraction of the initial kinetic energy was transferred
A 100 object is taken to a height of 250 above the Earth's surface. What is the object's mass at this height? What is the object's weight at this height
A large chunk of metal has a mass of 393 kg, and its volume is measured to be 0.05m^3, Find the metals mass density
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