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One liter (1000 cm ^3) of oil is spilled onto a smooth lake it the oil spreads out uniformly unit it makes an oil slick just one molecule thick with adjacent molecules just touching estimate the diameter of the oil slick. Assume the oil molecules have a diameter of 2x10^-8cm
Consider two widely separated conducting spheres, 1 and 2, the second having four times the diameter of the first. What is the ratio of the final surface charge density of spheres
A tennis ball is hit with a speed of 27 m/s at an angle of 45o. It lands on the flat roof of a 13-m-tall building. What is its velocity at landing
q1. consider a motor that exerts the constant torque of 25.0 n cdot m to a horizontal platform whose moment of inertia
A puck of mass 80.0 g and radius 4.30 cm slides along an air table at a speed of 1.50 m/s, What is the Angular Speed about the center of mass
A uniform ladder 15 ft long is leaning against a frictionless wall at an angle of 56° above the horizontal. The weight of the ladder is 35 pounds. A 77 lb boy climbs 6.0 ft up the ladder. What is the magnitude of the friction force exerted on the lad..
The mass of the Earth is 5.98 ? 1024 kg, and the mass of the Moon is 7.36 ? 1022 kg. Locate the center of mass of the Earth-Moon system as measured from the center of the Earth
An RLC series circuit has R = 935? , L = 18.0mH , and C = 250?F. If the circuit is connected to a 110V rms power source at the resonance frequency, what's the average power consumption
At one point in a pipeline, the water's speed is 3 m/s and the gauge pressure is 4.00×10^4 Pa. Find the gauge pressure at a second point in the line 11 m lower than the first if the pipe diameter at the second point is twice that at the first.
During normal operation, a computer's hard disk spins at 7200 rpm. what is the average angular acceleration of the hard disk
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
The Gravitron is an amusement park ride in which riders stand against the inner wall of a large spinning steel cylinder. What is the maximum rotational speed at which the riders will not slide up the walls of the ride
An electron is located on a pinpoint having a diameter of 5.30 µm. What is the minimum uncertainty in the speed of the electron
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