How can friction be reduced when it is a problem

You place a cup of 205oF coffee on a table in a room that is 72oF, and 10 minutes later, it is 195oF. Approximately how long will it be before the coffee is 180oF? Use Newton's law of cooling: / [T (t) = T _{A} + (T _{o}-T _{A}) e ^{-kt}/] A.

24m+350cm+0.46hm+500mm

A bag of sand has a density of 45 g/cm3 and a mass of 15 kg. How much space does the sand take up? A. 3 cm3 B. 675 g/cm3 C. 333 cm3

Hydroelectric power plants can generate huge amounts of electricity. Which of these statements best describes the impact of a hydroelectric power plant on the environment? It pollutes the air. It reduces the level of groundwater.

The horizontal sweep of an oscilloscope is rated in

Does adding a neutron to an atom's nucleus makes it an ion?

What is the difference between a fault-block and upwarped mountains?

Which of the following is not one of the reasons to properly warm up before exercising? A. Develop overall flexibility. B. Increase blood flow to the muscles and raise body temperature. C. Prevent injuries such as strains sprains and muscle cramps.

you are not chilly when swimming in warm water. but when emerging from warm water on a warm summer day, you feel chilly if the wind is blowing. Explain

A Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. The clock hand has a length of 15.0 cm and a mass of 6.00 g.