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A spring-loaded pellet gun is designed to fire 2.40 g projectiles horizontally at a speed of47.4 m/s.
(a) If the spring is compressed to its maximumdesign difference of 8.50 cm, what springconstant is required?
N/m
(b) What maximum force is required to load the gun?
A diver springs upward from a board that is three meters above thewater. At the instant she contacts the water her speed is9.00 m/s and her body makes an angleof 75.0° with respect to thehorizontal surface of the water. Determine her initial velocity..
A cart of mass M1 = 3 kg is attached to a block of mass M2 = 5 kg by a string that passes over a frictionless pulley. What is the work Wg done by gravity on the system
A block weighing 50 N rests on a 37 deg incline. If the incline is frictionless what would be its acceleration down the incline
A young hockey player stands at rest on the ice holding a 1.3-kg helmet. The player tosses the helmet with a speed of 4.6 m/s in a direction 9° above the horizontal, and recoils with a speed of 0.22 m/s. Find the mass of the hockey player.
a 70.0-kg person stands on a scale in an elevator. what is the apparent weight in each of the following situations?a
Two equal charges Q are separated by a distance d. One of thecharges is released and moves away from the other due to the forcesbetween them. When the moving charge is a distance 3d from theother charge, what is its kinetic energy?
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, with only electromagnetic radiation appearing after the collision. determine the energy of the electromagnetic radiation
A cable is connected at point A (1,2,3) and pulls towards point B (7,7,-1) the force in the cable is 100 pounds.
1.00-kohm resistor, a 0.200-H inductor, and a 4.00-microF capacitor are connected in series with an AC generator; the EMF of the generator is given by (150 V)sin((377 rad/s)t). What is the amplitude of the resulting alternating current?
What is the resistance of a lightbulb that uses an average power of 55.0 W when connected to a 60.0 Hz power source having a maximum voltage of 180 V
A 2,700-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6,270 m/s. The radius of the circular orbit is 8.72 × 10^6 m. What is the acceleration of satellite.
The magnetic flux through one turn of a 54-turn coil of wire is reduced from 40.3 Wb to 5.6 Wb in 0.10 s. Find the total resistance of the wire
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