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A hollow cubical box, 0.25 m on a side, with walls of negligible thickness floats with 35 % of its volume submerged.
What mass of water can be added to the box before it sinks?
The total resistance of the loop is R. Derive an expression that gives the current in the loop at the instant the near side is a distance r from the wire.
A bare helium nucleus has two positive charges and a mass of 6.64 10-27 kg. What voltage would be needed to obtain this energy
A hollow non-conductiong sphere has a uniform charge density ?. The inner and outer radius of the sphere are r1 and r2m respectively. What is the total charge of this sphere
A piece of metal is released under water. The volume of the metal is 37.0 cm3 and its specific gravity is 4.7. What is its initial acceleration
A communications satellite is a solid cylinder with mass 1135 kg, diameter 0.91 m, and length 1.75 m. Calculate the satellite's rotational kinetic energy about the rotation axis
A 5000 W electric heater is used for 32 hours. Calculate the energy consumed in this period. The plates are seperated by a distance of .100 mm. what is the current drawn by the heater
Given that the length of a month is 27.32 days, the mean gravity on Earth is 9.81 m s2 and the Earth's radius is 6371 km, Calculate the radius of the Moon's orbit
A uniform 3.15-kg rope 25.6 m long lies on the ground at the top of a vertical cliff. What was the change in potential energy of the rope during this maneuver
a ball is hit from the ground with an innitial velocity of 25ms into the air. it is to land in a hole that is 10m
Two forces act on a 1.6 kg box. One of the forces is known to be Fvec = 4.7ihatbold N. The acceleration is measured to be avec = (-1.9 ihatbold - 2.8 jhatbold) m/s2. Find the second force in unit-vector notation
An automobile of mass 1500 kg and a truck of 3500 kg collide at an intersection. What is the velocity (magnitude and direction) of the vehicles immediately after collision
If you want to find the latent heat of fusion, you take a cup with 0.755 kg of water at 30.00 C and drop 0.0850 kg of ice initially at 0.000 C and it all reaches an equilibrium temperature of 19.00 C,
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