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A small can is hanging from the ceiling. A rifle is aimed directly at the can, as the figure illustrates. At the instant the gun is fired, the can is released. Ignore air resistance and show that the bullet will always strike the can, regardless of the initial speed of the bullet. Suppose that the bullet strikes the can before they can reach the ground.
Two parallel wires are 13 centimeter apart. Each wire is 6 centimeter long. Calculate the force between the two wires
At the position of the negative charge, what is the magnitude of the electric field due to the three positive charges? What is the magnitude of the attractive force on the negative charge
a capacitor is first connected to a 6v battery and then disconnected and connected to a 12v battery. how does the charge on one of its plates change
A microscope uses an eyepiece with a focal length of 1.49 cm. Using a normal eye with a final image at infinity, What is the magnification of the microscope
A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo
A 80-g bullet is fired from a rifle having a barrel 0.582 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 14100 + 9100x - 24250x2, where x is i..
A hot air balloon is rising upward with a constant speed of 10 m/s. When the balloon is 4 m above the ground, What is its speed just before it hits the ground
assume a charge starts at rest on an equipotential surface, is moved off that surface, and then is eventually returned to the same surface at rest after a round trip. How much work did it take to do this? Explain.
A 24 ? resistor is frozen in a 0.50 kg block of ice with its two leads exposed. The resistor is then attached to a 9.0 V battery. how many hours does it take to completely melt the ice
A horizontal magnetic field of 1.0 x 10^-4 T is at an angle of 30 degrees to the direction of the current in a straight wire 75 cm long. what is the magnitude of the force on the wire
A charge of 1 uC accelerates through a potential difference of 200V. What is the change in the electric potential of the charge
A 610 kilogram elevator starts from rest and moves upward for 3.10 second with constant acceleration until it reaches its cruising speed, 1.66 m/s. Find the average power of the elevator motor during this period
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