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An block of a certain substance is floating in water with a piece of lead of density 1.13 e4 kg/m3 placed on top of it. The block has 0.900 of its total volume submerged. The piece of lead is removed from the top of the block and attached to the bottom of the block (underwater). Now the volume of the block that is submerged is 0.896 of its total volume. Find the density of the block.
Ironman is chasing a bad guy who is running at 7.2 m/s. When he is 143m behind the bad guy, How long does it take Ironman to catch the fellow
A lady is pushing a 96 kilogram crate across a floor at a constant velocity with a 362 Newton horizontal force. determine what acceleration will the crate have
Two cars approaching each other collide and stick together after the collision. What was the initial velocity of the second car
The two blocks in the figure are connected by a mass less rope that passes over a pulley. The pulley is 17cm in diameter and has a mass of 1.9kg. how long does it take the 4.0 kg block to reach the floor
An inclined plane has a height of 0.383 and is 120 cm long. What is the KE energy at the end of the ramp
The spring constant for the tendon is the same for both groups, 33 N/mm. Illustrate what is the difference in maximum stored energy between the sprinters and the nonathletes?
A parallel-plate capacitor with only air between the plates is charged by connecting it to a battery. What is the dielectric constant of this material
A 3m platform of mass of 10kg is supported by a wire attached to its center with an angle of 40 degrees. A 22kg load sits on the platform with it's center 0.50 m from the outer end. Find the tension force in the wire
A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. Compute the frequency with which the wheel spins
A refuse derived fuel power plant discharges 1.2 m3/s of cooling water at 75°C into a river. What will be the river temperature immediately downstream of the discharge
A student drops two metallic objects into a 120 gram steel container holding 150 gram of water at 25°C. Compute what is the mass of the aluminum chunk
As expected, the predictions of Coulomb's law are well confirmed. You find that the forces are: repulsive? or attractive? 2. and that the magnitude of each force is?
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