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A 89 kg man lying on a surface of negligible friction shoves a 88 g stone away from himself, giving it a speed of 3.5 m/s. What speed does the man acquire as a result?
two equally charged insulating balls each weigh 0.40 g and hang from a common point by identical threads 45 cm long.
A car rounds a 230 m -radius curve at 14.5 m/s. If the horizontal force acting on the car is 790 N, what's the car's mass
The pilot of an airplane travelling 200 km/h wants to drop supplies to flood victims isolated on a patch of land 165m below. The supplies should be dropped how various seconds before plane is directly overhead.
A 11-V battery is connected to three capacitors in series. The capacitors have the following capacitances: 3.6 µF, 11.1 µF, and 32.5 µF. Find the voltage across the 32.5-µF capacitor
The inner conductor of a coaxial cable has a radius of 0.550 mm, and the outer conductor's inside radius is 3.00 mm. What is the maximum potential difference that this cable can withstand
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. (a) How many electrons are there in 9.42 liters of water? (1 liter is equivalent to 1.00 × 10-3 m3) (b) What is the net charge of all these electrons?
In a certain binary-star system, each star has the same mass which is 2.0 times of that of the Sun, and they revolve about their center of mass. The distance between them is the 5.9 times the distance between Earth and the Sun. What is their period o..
An electron (q=-e) completes half of a circular orbit of radius r around a nucleus with Q=+3e. By how much does the electric potential energy change
A large wheel is coupled to a wheel with half the diameter. How does the rotational speed of the smaller wheel compare with that of larger wheel? How do the tangential speeds at the rims compare (assuming the belt doesn't slip).
A 2 kg ball is thrown straight up in the air. What is the net force acting on the ball when it reaches its maximum height?
Comet Halley has an orbital perios of 75 years and when it enters the inner Solar System, it passes within a few AU of the Sun. Determine the average distance of Comet Halley
What is the resolving power of the objective if it is used in an oil-immersion microscope with n oil = 1.45
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