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A solid, square pinewood raft measures 3.0 m on a side and is 2.30 m thick. What is the total mass of swimmers that the raft can carry and float by its top surface at water level? ___________________kg
A 2.95-kg block initially at rest at the top of a 3.69-m incline with a slope of 42.7° begins to slide down the incline. How fast is the block moving at the bottom of the incline
A 6080 kg space probe moving nose-first toward Jupiter at 105 m/s relative to the Sun fires its rocket engine, ejecting 80.0 kg of exhaust at a speed of 253 m/s relative to the space probe. What is the final velocity of the probe?
An astronaut notices that a pendulum which took 2.45 {\rm s} for a complete cycle ofswing when the rocket was waiting on the launch pad takes1.26 {\rm s} for the same cycle of swingduring liftoff. What is the acceleration of the rocket
Two cars of the same mass collide at an intersection. Just before the collision one car is traveling east at 40.0 km/h and the other car is traveling south at 70.0 km/h. what is the speed of the cars immediately after the collision
What is the ratio of the dynamic viscosity of air to that of water at standard pressure and a temperature of 20?C? Find the ratio of the kinematic viscosity of air to that of water for the same condition?
At a point P, the electric field is 71 N/C at 22 degrees clockwise from the positive x axis. A particle of mass 1.5 kg and charge 0.17 C is located at P.
A 1060-kg van, stopped at a traffic light, is hit directly in the rear by a 794-kg car traveling with a velocity of +3.90 m/s. determine the final velocity of the car and the van
a ball is projected horizontally from the edge of a table that is 1.12 m high and it strikes the floor at a point 1.23
A heat engine operating between a pair of hot and cold reservoirs with respective temperatures of 500 °K and 300 °K will have , what is the output energy
A certain radioisotope has a half-life of 11.0 days. What fraction of an initial sample of this isotope remains after 22.7 days
A cylindrical container 1.6 m tall contains mercury to a certain depth d. The rest of the cylinder is filled with water. If the pressure at the bottom of cylinder is two atmospheres, what is the depth d.
you measure wavelength divided by 2 to be 70cm. The temperature in the lab is 22 degrees celsius. What is the frequency of the resonance
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