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A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.700m^3 and the tension in the cord is 800N .
Part A Calculate the buoyant force exerted by the water on the sphere.
Part B What is the mass of the sphere?
Part C The cord breaks and the sphere rises to the surface. When the sphere comes to rest, what fraction of its volume will be submerged?
A small square loop carries a 48A current. The on-axis magnetic field strength 43cm from the loop is 6.8nT
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. calculate the moon\'s radial acceleration.
A 1500 kg car moving east at 26 m/s collides with a 1720 kg car moving south at 15 m/s and the two cars stick together.
An air-filled ion chamber is operated at a pressure of 3 atm, find the saturated ion current corresponding to a gamma-ray exposure of 1 mR/h
During an adiabatic expansion the temperature of 0.500mol of argon (Ar) drops from 48.0?C to 15.0?C. What is the change in internal energy of the gas
An outfielder throws a 0.150 kg baseball at a speed of 20.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball
Write a paper follow below instructions: -the three classes of pumps which are, positive displacement, momentum transfer and entrapment
A bat in a cave emits a sound pulse and receives an echo 0.22 second later. Assuming that the speed of sound is 339 m/s, how far did the sound (the longitudinal wave) travel during this time.
An aluminum wire carrying a current of 4.0 A has a cross-sectional area of 9.0 10-6 m2. Find the drift speed of the electrons in the wire
What is error in the simple pendulum approximation
A person who weighs 68 kg steps onto a spring scale in the bathroom, and spring compresses by 0.79cm. (a) what is the spring constant? (b) What is the weight of another person who compresses the spring by 0.34cm.
A roller coaster goes 26 m along a section of track sloping 10 degrees below the horizontal, followed by a 15-m section sloping upward at 6 degrees, followed by an 18-m section of level track. Find the net displacement.
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