A 10 kg block slides on a frictionless surface at 10 m/s. It hits a rough patch 3 meters long with a coefficient of kinetic friction of 0.4. When it reenters the frictionless surface, how fast is it going?

reasons why using mirrors to generate electricity is not a common practice.

If you have 10,000 red blood cells, how many red blood cells and white blood cells do you have altogether

A grasshopper floating in water generates waves at a rate of three per second with a wavelength of two centimeters. (a) What is the period of these waves? (b) What is the wave velocity?

How do I find the resultant force of a skydiver falling with gravity constant of 10 newtons and his weight is 70 kg?

One of the first steps in harnessing geothermal energy is to drill a well into a geothermal reservoir. a. True b. False

According to the kinetic-molecular theory, gases condense into liquids because of

What does sound travel throu better

How does a change in resistance affect the conductivity of a material? A) The lower the resistance, the worse the conductivity B) The lower the resistance, the better the conductivity C) The higher the resistance, the better the conductivity D) The

Two railroad cars, each of mass 6500 kg and traveling 80 km/h in opposite directions, collide head-on and come to rest. how much thermal energy is produced in this collision?

What is a result of using a machine?