Using an example, explain how small atoms are.

How does an elecrical power plant work?

Using the method of dimension, derive an expression for the velocity of sound waves. assume that the velocitu depends on: (i) Modulus of the elasticity E of the medium (ii) The density of the medium p take constant K=I

What particles make up a plasma of hydrogen?

How much work is done when a very large force is applied to an object but doe what is the work done on a 34-N weight if it is lifted up 1 km

A roller coaster passengers are suspended upside down as it moves at a constant speed through a vertical loop. What is the direction of the force that causes the coaster and it's passengers to move in a circle? What provides this force?

The half-life of plutonium-238 is 87.7 years. What percentage of the atoms in a sample of plutonium-238 will remain radioactive after 263.

Charge q is 1 unit of distance away from the source charge S. Charge p is four times further away. The force exerted between S and q is ___ the force exerted between S and p. 1/4 1/16 16 times 4 times

A 21.7kg child descends a slide 3.5 m high and reaches the bottom with a speed of 2.2m/s. How much thermal energy due to friction was generated in this process?

Which term refers to a substance that can only be broken down chemically? A. metals B. molecules C. matter D. mixtures

A 12,000-kg lunar landing craft is about to touch down on the surface of the moon, where the acceleration due to gravity is 1.6 m/s2. At an altitude of 158 m the craft's downward velocity is 16.9 m/s.