Does science or pseudoscience concern the natural world?

4. Any material that can flow is

Electrically neutral objects cannot exert an electrical force on each other. True or False

Why does gravitational energy increase away from earth

B1. A stone is dropped from the cliff. If the height of the cliff is 200cm. (a) calculate (1) Potential energy after falling for 20 seconds

A piston above a liquid in a closed container has an area of 1m2. The piston carries a load of 350 kg. What will be the external pressure on the upper surface of the liquid? A. 27.3 kPa B. 3.43 kPa C. 4.90 kPa D. 68.6 kPa

Use your observations to determine qualitatively how the strength of the electric interaction between charged objects depends on the distance between them. Explain your reasoning (this is trickier than it might seem at first).

Far from any other masses, two masses, m1 and m2, are interacting gravitationally. The value for the mass of m1 suddenly doubles. What happens to the value of the gravitational force that mass m2 exerts on mass m1?

Which of the outer planets are most like Earth? How?

The pressure inside a champagne bottle can be quite high and can launch a cork explosively. Suppose you open a bottle at sea level. The absolute pressure inside a champagne bottle is 6 times atmospheric pressure; the cork has a mass of 7.

Using a cathode ray tube, Thomson confirmed that atoms must have an overall positive charge. atoms are made of particles that have a negative charge. electrons in atoms must have varying amounts of energy. electrons are only found in the nucleus.