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At the same instant that you fire a bullet horizontally from agun, you drop a bullet from the height of the barrel. If there isno air resistance, which bullet hits the ground first.Explain.
A tennis player standing 10.7 m from the net hits the ball at 2.50° above the horizontal. how fast was the ball moving when it left the racquet
A 105-kg water skier floating in a lake is pulled from rest to a speed of 14 m/s in a distance of 25m. What is the net force exerted on the skier, assuming his acceleration is steady.
A motor may be modeled as a series RL circuit. A particular motor operates from an ordinary 60-Hz wall outlet with Erms= 115 V. what is the inductive reactance of the circuit
q1. a plot of pressure as a function of volume is known as a pv diagram. pv diagrams are often used in analyzing
Two trains, each having a speed of 27 km/h, are headed at each other on the same straight track, What is the total distance the bird travels before the trains collide
Two people carry a 200-kg crate up stairs. The crate is1.25 m long and 0.50 m high, If the force each person applies is vertical, what is the magnitude of each of these forces
a 550-kg car traveling at 24.0 m/s collides head on on with a 680-kg pick up truck. what is the momentum of the car before collision
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
An olive is at the bottom of a glass of alcohol (n = 1.36), 6.51 cm beneath the surface. what is the apparent depth d' of the olive
A 50 g ball is fired horizontally with initial speed v_0 toward a 110g ball that is hanging motionless from a 1.10 m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 110g ball swings out to a maximum angle the..
A Carnot engine has a power output of 130 kW. The engine operates between two reservoirs at 20°C and 500°C, How much energy does it take in per hour
A light ray enters a glass slab at point A at an angle of 58.6° with respect to the surface normal, What minimum value for the index of refraction of the glass can be inferred from this
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