a cube of sides 10cm is partly filled with sand of density 3.8g/cm3. If the weight of the sand is 200g, find the height in mm up to which it is filled in the container?

Are there classes of inclined planes?

Your washer has a power of 350 watts and your dryer has a power of 1800 watts how much energy do you use to clean a load of clothes in 1 hour of washing and 1 hour of drying? A. 1.29 x 10^3 J B. 2.58 x 10^3 J C. 1.55 x 10^7 J D. 7.74 x 10^6 J

According to the law of conservation of energy what ultimatly happens to the total amount of energy in the universe?

What characteristics of a planet determine the strength of its gravitational force on other objects?

Which of the following would reduce water flow in a pipe? Select all that apply. The pipe is widened. The pipe is lengthened. The pipe is constricted. The pipe is shortened. The pipe is curved.

Atoms in a molecule are held together through shared

Why is it not a good idea to stick a metal fork in a plugged in toaster to remove a stuck piece of toast? In your explanation be sure to use the concepts of electrical conduction and voltage.

Two identical rocks are dropped from different heights. The higher one starts out four times as high as the lower one. How much faster is the higher one going just before they hit?

A kid on a playground swing makes 6 complete to-and-from swings each 30 seconds (a) the frequency of the swinging is? (b) the period of the swinging is?

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 100 kg ball traveling at 5 m/s. A 1,000 kg ball traveling at 5 m/s would have kinetic energy.