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A 0.50 kg ball that is tied to the end of a1.4 m light cord is revolved in a horizontal plane by the cord making a 30° angle, with the vertical.
a) Decide the ball's speed _________
b) If the cord can withstand a maximum tension of 8.9 N, what is the highest speed at which the ball can move? ______
Explain how will the acceleration due to gravity at the surface of planet X compare to the acceleration due to gravity at the surface of earth?
A girl rides an escalator that moves her upward at a constant speed. As the girl rises, how do her gravitational energy and kinetic energy change.
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 5.52 kg crate to the bottom of a steep ravine of height 23.9 meters. At what speed will the crewman hit the bottom of the ravine
Two 15cm long flat glass plates are separated by a T (10 micro m) thick spacer at one end, Find a relation among spacing between adjacent fringes delta x, lamda, L, and T
Two balls are released simultaneously from a certain heightone is allowed to fall freely and other thrown with some horizontalvelocity. Will they hit the ground together
A pipe open at both ends has a fundamental frequency of240Hz when the temperature is 0°C. What is the length of the pipe
two point charges q1 4.00nc and q2 ?3.00nc are placed 20.0cm apart as shown in figure 1. there also exists a third
A person is 1.4 m tall, and is standing at 2.0 m in front of a plane mirror. What is the minimum length of the mirror if the person is now 3.5 m from the mirror
A quantity of ideal gas requires 800 kJ to raise the temperature of the gas by 10.0 K when the gas is maintained at constant volume. What is the adiabatic gas constant of this gas
A village maintains a large tank with an open top, containing water for emergencies. The stopper is removed. What mass of water flows from the nozzle in 2.00 h
A 72 kg skier is going down a slope oriented 37° above the horizontal. Determine the pressure that each ski exerts on the snow
An electric motor consists of a 70 turn coil 3.0 centimeter in diameter, mounted between the poles of a magnet that produces a 0.07 T field. Calculate the maximum torque developed by the motor
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