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A solid object of density 660 kg/m3 is placed in water.
(a) Will the object float? Why?
(b) What will be the buoyant force on the object if its mass is 1300 kg?
How high a tree would a 79.0 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount.
An object is recovered from under the sea. Its weight is measured to be 54.6 lb and its volume 1.3 ft3. What is the object's weight density
Your plane reaches its takeoff runway and then holds for 5.0 min because of air-traffic congestion. What is its takeoff speed
Problem on elevator
A particle has a charge of +2.3 ?C and moves from point A to point B, a distance of 0.13 m. The particle experiences a constant electric force, and its motion is along the line of action of the force.
find an article on a current event related to macroeconomics. briefly summarize the article and state how a concept in
Two people wish to push a big beer freezer weighing 2000 N up a ramp inclined at an angle of 37.0o with the horizontal. what average force does it exert on the heavy object
A beam of parallel light, 1.50 mm in diameter passes through a lens with a focal length of 13.7 cm. What is the distance between the two lenses
A 20-N block lifted straight upward by a hand applying a force of 20N has an initial kinetic energy of 16J. What is the block's final kinetic energy
The peak wavelength for the blackbody radiation from a star corresponds to an energy of 2.92x10^ -19 J. what is the temperature of the star at the surface
A cold room has walls constructed of 0.24 m brick on the outside, 0.15 m foam insulation in the middle and 1.6 cm of wood on the inside. Calculate the outside and inside surface temperature of the composite wall
A 32000-kg railroad freight car collides with a stationary caboose car. What is the mass of the caboose
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