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A man and a boy carry a canoe 6.10 m longand weighing 371 N. The canoe is heldoverhead in a horizontal position. The boy holds one end of thecanoe. How far from the opposite end should the man stand so that the boy exerts a force of only 129 N?
Find the fundamental frequency and the next three frequencies that could cause a standing-wave patterns on a string that is 26.0 m long, has a mass per length of 9.00 10-3 kg/m, and is stretched to a tension of 24.0 N.
A 13g bullet traveling 221 m/s penetrates a 2 kg block of wood and emerges cleanly at 160 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
A girl who is learning karate is going to break four bricks with her hand. Her hand and arm mass is 1.56 kg. what is the force delivered to the bricks
In an L-R-C series circuit, 310 ohm, 0.405 H, and 6.03×10-8 F. When the ac source operates at the resonance frequency of the circuit, What is the voltage amplitude of the source
A typical coal-fired power plant burns 350 metric tons of coal every hour to generate 720MW of electricity. 1 metric ton= 1000 kg. What is the power plant's thermal efficiency
One solenoid is centered inside another. The outer one has a length of 47.0cm and contains 6800 coils, Find the emf induced in the inner solenoid
In a carnival they often have a large r = 16 m, cylinder which people stand against the outer wall while it rotates with some velocity, What is the minimum velocity of the cylinder to make someone "stick" to the wall in m/s
A charge of170µC is at the center of a cube of edge40.0cm. No other charges are nearby. Find the total flux through each face of the cube
What is the gravitational force between two 20-kg iron balls separated by a distance of .9 m? What is the height of the table
You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. What is the height of the arrow once it has travelled the 47.0 m horizontally
What is the current in the element of an electric clothes dryer with a resistance of 8.2? when it is connected to 240 V
A point charge of 20nC is placed on the x-axis at the point x = 2. Find the x-component of the electric field Ex at x = 4 and x = -1 where the coordinates are in meters
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