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two point charges each have a value of 30.0 mC and are separated by a distance of 4.00 cm. What is the electric field midway between the two charges?
A house is 30.0 ft long and 25.0 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 15 m/s at an angle of 32° above the horizontal. (a) How long does it take for the ball to reach the wall if it is 4.2 m away? ..
The leader of a bicycle race is traveling with a constant velocity of +11.2 m/s and is 10.4 m ahead of the second-place cyclist. The second-place cyclist has a velocity of +9.50 m/s and an acceleration of +1.20 m/s2. How much time elapses before h..
A Carnot engine has an efficiency of 0.361, and the temperature of its cold reservoir is 406 K. (a) Determine the temperature of its hot reservoir. (b) If 5950 J of heat is rejected to the cold reservoir, what amount of heat is put into the engine..
a worker drags a 310 kg crate at a constant velocity of 3 m/s, across a factory floor by pulling on a rope tied to the crate. What is the acceleration of the crate
A 92 kg man standing on a surface of negligible friction shoves a 73 g stone lying at his feet, giving it a velocity of 4.0 m/s. What velocity does the man acquire as a result.
An electron and a positron, each moving at 3.0 x 10^5m/s, collide head on, disappear, Determine the energy and momentum of each photon
Billiard ball A of mass = 0.130 moving with speed = 2.80 strikes ball B, initially at rest, of mass = 0.150. Consequently of the collision, ball A is deflected off at an angle of 28.0 with the speed = 2.00.
find the maximum distance she can be from the craft and still return within 2.30 min (the amount of time the air in her helmet remains breathable).
A thermos contains 130 cm3 of coffee at 85° C. To cool the coffee, you drop two 13-g ice cubes into the thermos, What is the final temperature of the coffee
Transverse waves with a speed of 59.0 m/s are to be produced on a stretched string. A 4.95-m length of string with a total mass of 0.0600 kg is used. (a) What is the required tension in the string? N (b) Calculate the wave speed in the string if t..
on april 22, D avid Ortiz of Boston Red Sox hit a home run on a 92mph fastball thrown horizontally from New York Yankee pitcher Masahiro Tanaka. compute the force exerted on the ball by the bat
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