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Two identical nickel balls are 2 meters apart from each other. The volume of the balls is 1 cm3. Suppose someone can move one electron from each atom of ball A and give it to ball B. What is the magnitude of the electrostatic force between two nickel balls? what is the magnitude of the gravitional force between two nickel balls? (in units of N) How many electrons would need to be transferred in order to balance these two forces?
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker, What is the total intensity level
Camera lenses are described in terms of their focal length. A 50 mm lens has a focal length of 50 mm, Locate the position of the image
A woman on a bridge 83.3 m high sees a raft floating at a constant speed on the river below. calculate the speed of the raft
Multiple-Concept Example 8 provides useful background for part b of this problem. What is the angular displacement (in rad) of each wheel
Two identical 1.70kg masses are pressed against opposite ends of a spring of force constant 1.70N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth
Consider a nonconducting rod that would make a great wire except for the fact that it is nonconducting, Find the electric field strength at a point on the axis of the rod
A skier wears a jacket filled with goose down that is 15 mm thick. Another skier wears a wool sweater that is 7.00 mm thick. Both have same surface area.
A parachutist descending at a speed of 13.4 m/s loses a shoe at an altitude of 54.2 m. Illustrate what is the velocity of the shoe just before it hits the ground? The acceleration of gravity is 9.81 m/s2.
A sailboat is traveling east at 5.0 m/s . A sudden gust of wind gives the boat an acceleration a = (0.80 m/s^2 , 40 degrees north of east). A)What is the boat's speed 4.5s later when the gust subsides? B)What is the boat's direction 4.5s later whe..
Antennas for radio transmission and reception are particularly effective if they're about a half-wavelength long. What's the appropriate length for an FM antenna
A 15-g sample of the candy is placed in a small aluminum container of mass 0.325 kg filled with oxygen, compute the Calorie content of 75g of candy
Two identical 0.13 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, where x2 = 0.04 m.
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