Why does a block of metal sink in water but the same size block of wood floats

Science labs have safety equipment that is designed to be used during an emergency. What emergency safety equipment should be in a science lab? How would you use this equipment in an emergency?

How is pounds of force measured

What type of friction is using chalk in the summer to draw on the ground in Copley square? Sliding friction Rolling friction static friction Fluid friction

The pressure exerted by a phonograph needle on a record is surprisingly large, due to the very small width of the needle. show answer Incorrect Answer If the equivalent of 0.95 g is supported by a needle, the tip of which is a circle 0.

A car moving at 10.0 m/s crashes into a barrier and stops in 0.050 s. There is a 20.0-kg child in the car. Assume that the child's velocity is changed by the same amount as that of the car, and in the same time period.

In what state do hydrogen and helium exist in a star

13) The frequency of a vibrating string varies inversely as its length. A string 3 feet long vibrates 175 cycles per second. Find the frequency of a 5 foot string.

Match the following. 1. energy a push or a pull 2. mechanical energy energy of a moving object 3. kinetic energy a force directed away from an object 4. heat the ability to do work 5. work a force moving an object through a distance 6.

Scientists hypothesize that oxygen began to accumulate in earth's atmosphere of living things with the ability to?

The 3 stages of the water cycle are