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The masses of the earth and moon are 5.98*1024 and 7.35*1022 kg, respectively. Identical amounts ofcharge are placed on each body, such that the net force(gravitational plus electrical) on each is zero. What is the magnitude of the charge placed on each body?
A person is performing a knee extension exercise with a 100 N weight acting at the ankle. What is the torque at the knee necessary to maintain a knee joint angle of -60q relative to the right horizontal passing through the knee joint
In a local bar, a customer slides an empty beer mug down the counter for a refill. What was the direction of the mug's velocity just before it hit the floor
A 79-kg pilot in an aircraft moving at a constant speed of 495 m/s pulls out of a vertical dive along an arc of a circle of radius 4500 m. What is the pilot's apparent weight at the bottom of the dive
When a 0.20-kg block is suspended from a vertically hanging spring, it stretches the spring from its unstrained 0.005 m. find the total mechanical energy of the system at any instant
Superman leaps in front of Lois Lane to save her from a volley of bullets. In a 1-minute interval, an automatic weapon fires 152 bullets, Find the average force exerted on Superman's chest
When a synchronous motor is running at synchronous speed, the damper windingproduces(A) damping torque.(B) eddy current torque.(C) torque aiding the developed torque.(D) no torque.
92X235 absorbs a thermal neutron and fissions into: 37Y93 and 55Z141. What nucleons are produced by the fission
An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. What is the work done by the force
To pump 100Joules of heat from the ice cube tray of freezing water at 273K, out into a hot room at 310 K, the laws of thermodynamics say that you will need at least how many Joules of ordered energy or work.
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. find How long was the ball in flight
The springs of a 1400 kg car compress 6.0 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations.
An automobile transmission has 175 hp of power entering from the engine, 167 hp leaving to the wheels, while losing 5000 Btu/hr to the surroundings as heat.
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