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You have a beach ball which has a radius of 25 cm and a mass of 0.5 kg. You have a lead ball which has the same radius but has a mass of 120 kg. You immerse the lead ball under the water, what is the buoyancy force felt by the lead ball?
What is the apparent weight of a 75 kg astronaut.
Neutron-induced fissionof U-235 results in the fission products iodine-139 and yttrium-95. How many neutons are released
If the ball is free from rest at a height of 0.67 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? Suppose the ball is a solid sphere of radius 2.2 and mass 0.14.
Two point charges Q1 = +5.70 nC and Q2 = %u22122.40 nC are separated by 25.0 cm. What is the potential energy of the pair of charges
A big yo-yo (radius 0.2 meters, mass= 20 kg) has a string wrapped about its circumference. If yo-yo falls, how much time does it take to fall 10 m
An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section of the pipe is 5.00 m/s. What is the pressure in the narrow section of the pipe
Consider a 80.0-kg man standing on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.46 m/s in 0.550 s. It travels with this constant speed for the next 5.00 s.
Two blocks, masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find the acceleration of each block
Two C1 = 3.7 μF, C2 = 18.7 μF are charged individually to V1 = 14.2 V, V2 = 7.0 V. Calculate the final potential difference across the plates of the capacitors once they are connected
A block of mass m = 2 kg and initial velocity v = 5 m/s runs into and compresses a spring of spring constant k = 50 N/m. How long is the block in contact with the spring
A beaker has a height of 15.0 cm. The lower half of the beaker is filled with water, and the upper half is filled with oil (n = 1.48). what is the apparent depth of the bottom
A spherical balloon has a radius of 12.5 m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 1200 kg? avoid the bouyant force on the cargo volume itself.
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