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When chasing a hare along a flat stretch of ground, agreyhound leaps into the air at a speed of 10.9 m/s, at an angle of 25° above the horizontal.
(a) What is the range of his leap?
m
(b) For how much time is he in the air?
s
A 11.0 cm -diameter compressed-air tank is 70.0 cm tall. The pressure at 30.0 degrees C is 130 atm. How many moles of air are in the tank
If both the ring and the rod are warmed together, what temperature must they both reach so that the ring barely slips over the rod.
Find the diameter of the eye structure that causes a circular diffraction pattern with the first dark ring at an angle of 3.7 when viewed with monochromatic light of wavelength 630
A long uniform wooden bar with square crosssection floats on water. Show that , if the relativedensity of wood is 0.50, the bar will float with all fourfaces making an angle of 45 degrees with the water surface.
A 16.0-m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a 65.0° angle with the horizontal. What is the magnitude and direction
The turbine and associated rotating parts of a jet engine have a total moment of inertia of 29 kg m2. The turbine is accelerated uniformly from rest to an angular speed of 140 rad/s in a time of 32 s.
If the coefficient of static friction between the coffee cup and the roof of the car is 0.29, what is the maximum acceleration the car can have without causing the cup to slide? Ignore the effects of air resistance
if harry's dog weighs 25N and harry lifts him up to a height of 10 meters, how much work does Harry do
Why is it sometimes better to use a small telescope in orbit around the Earth than it is to use a large telescope on a mountaintop?
Write down an expression for the mass of the nucleus
When the lights of an automobile are switched on, an ammeter in series with them reads 10.20 A and a voltmeter connected across them reads 12.10 V. What is the current through the starting motor
A ball is hung from a rope, making a pendulum when it is pulled 5 degrees to the side, the restoring force is 1.0 N. What will be the magnitude of the restoring force if the ball is pulled 10 degree to the side?
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