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Two objects with different masses are stuck together and attached to the ends of two strings coming down from a mass less, frictionless pulley. If the masses are separated such that the heavier mass is at the end of one rope and the lighter mass is at the end of the other rope, explain will the tension in the rope change? Why or why not?
A steel aircraft carrier is 370 m long when moving through the icy North Atlantic at a temperature of 2°C. By how much does the carrier lengthen when it is travelling in the warm Mediterranean Sea at the temperature of 21 °C.
Water at a pressure of 4.3 atm at street level flows into an office building at a speed of 0.6 m/s through a pipe 5 cm in diameter. What is the pressure in the top floor pipe
Only 25% of the intensity of a polarized light wave passes through a polarizing filter. What is the angle between the electric field and the axiz of the filter
A person pushes a 21.9-kg shopping cart at a constant velocity for a distance of 23.8 m on a flat horizontal surface. What is the magnitude of the force that the shopper exerts
A large arm model was constructed with a free arm which weights 1 kg, an additional weight of 1 kg is supported by the arm at a distance of 12 cm from the pivot. What is the total torque of the resistance
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How fast will the shell be traveling when it hits the ground
the masses of the earth and moon are 5.98 x 1024 and 7.35 x 1022 kg respectively. identical amounts of charge are
A 33.6 m length of copper wire at 23?C has aradius of 0.19 mm . The resistivity of copperis 1.7 × 10?8 ? m, determine the current in the wire
A certain freely falling object requires 1.7s to travel the last 40m before it hits the ground. From what height above ground did it fall.
a 180 lb man and a 120 lb woman stand side by side at the same end of a 300 lb boat ready to dive each with a 16 fts
A microphone is attached to a spring that is suspended from the ceiling. Directly below on the floor is a stationary 440 Hz source of sound. The microphone oscillates up and down in simple harmonic motion with a period of 2.0s.
A corner construction lot has the shape of a right triangle. If the two sides perpendicular to each other are 38m long and 40.3m long
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