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Say you have a 10 kg book sitting on a table. You pick that book upand place it 3 m below on the ground. What is the work done by youon the book and what is the work done by gravity on the book?
a ring of charge with radius r 3.5 m is centered on the origin in the x-y plane. a positive point charge is located at
In space, an asteroid of mass 5,000 kg is hit by an object of mass 1000 kg and travelling at 1,000 m/s with respect to the asteroid. what will be the new speed of the asteroid
The cooper windings of a motor Have a resistance of 55 ohms at 20 degrees C when the motor is idle. What is the temperature in degrees Of the windings
A particle accelerates uniformly from rest to a speed of 50m/s in 10 sec. It then continues its motion at a constant speed for 4 more seconds. all motion for the particle is horizontal(along the x-axis) a) Determine the instantaneous speed of the par..
Low-frequency vertical oscillations are one possible cause of motion sickness, with 0.40 having the strongest effect. How much time elapses between two waves hitting the ship
A parallel-plate capacitor has an area of 0.12 m^2 and a separation of 1.2 cm. A battery charges the plates to a potential difference of 120V and is then disconnected. A dielectric slab of thickness 4.0 mm and dielectric constant 4.8 is then place..
When you are lying horizontally, these muscles make an angle of approximately 5.00 with the femur, and if you raise your legs, With his leg raised to 60.0, find the tension in the abdominal muscle on each leg
What is the speed of a free electron that has just barely enough kinetic energy to collisionally ionize a sodium atom in its ground state? What is the speed of a free proton with just enough kinetic energy to collisionally ionize this atom?
A bowling ball (m = 7.2 kg, r = 0.11 m) and a billiard ball (m =0.38 kg, r = 0.028 m) may each be treated as uniform spheres. Whatis the magnitude of the maximum gravitational force that each canexert on the other?
An air conditioner draws 15 A at 220-V ac. The connecting cord is copper wire with a diameter of 1.446 mm. how much power is dissipated in the wiring
An asteroid is discovered heading straight toward Earth at 15km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 29degree to its original path at a..
A meter stick moving in a direction parallel to its length appears to be only 40cm long to an observer. what is the meter stick's speed relative to the observer
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