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A toy cannon of mass 1.0 kg is initially at rest on a horizontal surface when it launches a 0.05 kg projectile with a velocity of 10 m/s at an angle of 60° above the horizontal. What is the speed of the 1.0 kg cannon immediately after the projectile is released, assuming that friction is negligible?
The engine of a motorboat delivers 29.8 kw to the propeller while the boat is moving at 18.0 m/s . What would be the tension in the towline
A slingshot obeying Hooke's law is used to launch pebbles vertically into the air. You observe that if you pull a pebble back 18.2 cm against the elastic band, the pebble goes 5.0 m high. How far must you pull it back so it will reach 10.0 m? Exp..
A solenoid 12.0 cm in diameter and 60.0 cm long is made from copper wire of diameter 0.100 cm, with very thin insulation. What is the magnetic field at its center
Determine the center of mass of a 1 meter long side square whose sides have been made from 4 different metals of lead, aluminum, gold and tin
a meter stick is held vertically above your hand with the lower end between your thumb and first finger. on seeing the
A 16 kg child slides down a 3.3-m -high playground slide. She starts from rest, and her speed at the bottom is 2.7 m/s
Consider a black box which is approximately a 10-cm cube with two binding posts. Each of these terminals is connected by a wire to some external circuits. Otherwise, the box is well insulated from everything.
A drop of water on a countertop reflects light from a flower held 2.2 cm directly above it. What is the focal length of the water drop
A meter stick is found to balance at the 49.7 cm mark whenplaced on a fulcrum. What is the mass of the meter stick
How fast would you have to throw a baseball (m = 145 g) to give it the same momentum as a 10-g bullet traveling at 800 m/s?
A mountain climber looks up a slope and sees an avalanche ofboulders accelerating toward her. The boulders are initially60.0m above, moving at an initial speed of 2.00m/s and acceleratingat 4.00m/s^2.
A 0.14 kg baseball moves horizontally with a speed of 27 m/s toward a bat. find magnitude of the impulse delivered to the ball by the bat
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