How many miles will a persin run during 10 kilometer race

A block of wood of mass 300g and density 0.75 g/cm^3 is floating on the surace of a liquid of density 1.1 g/cm^3. What mass of lead (density = 11.3 g/cm^3) must be added to the block in order for the combination just to be submerged?

Why is viscosity an important property of matter?

I throw a stone off a cliff 32 feet above the water. The height of the stone in terms of time (in seconds) is given by h (t) = - 16t2 + 128t + 32. At what time will the stone splash into the water? Round your answer to nearest tenth of a second

You walk across the room at 2 kilometers per hour. Express this speed using abbreviated units

What happens when multiple forces act upon an object?

The two main parts of a wave are the a. swell and whitecap. c. crest and trough. b. wavelength and wave height. d. rise and dip.

A block of mass m=16.8 kg is sliding on a surface with initial velocity v=23.2 m/s. The block has a coefficient of kinetic friction μk = 0.426 with respect to the surface and is being pushed by a force of magnitude F=86.

Two children are pulling and pushing a 30.0 kg sled. The child pulling the sled is exerting a force of 12.0 N at a 45o angle. The child pushing the sled is exerting a horizontal a force of 8.00 N. There is a force of friction of 5.00 N.

Describe what a planetesimal is. Is it related to a protoplanet?

Describe the medium that electromagnetic waves use to travel