11. Name given to the elements located in group 2.

a. Noble gases

c. Alkaline earth metals

b. Halogens

d. Alkali metals

Two mechanical waves intersect and produce the straight line seen here. What is the result of this intersection called? A) summative interference B) destructive interference C) subtractive interference D) constructive interference

Do the hot steam and air moving upward from the pot have kinetic or potential energy?

What is the acceleration experienced by a car that takes 10 s to reach 27 m/s from rest?

A ping-pong ball is shot straight north from a popgun at 4.0 m/s. The wind is blowing to the west at 3.0 m/s. What is the actual velocity of the ping-pong ball? 7.0 m/s 1.0 m/s

The gauge pressure in a car tyre is 300 kPa at 20°C. After moving at high speed, the tyre has heated p and its pressure is 330 kPa. What is the temperature of air in the tire? Assume the atmosphere pressure to be 101 kPa. (Ans: 315.08 K)

How can you find magnitude of velocity from a displacement time graph of an object?

Consider two rocks with masses of 1 and ten kilograms. What is the relation between their inertia's? Between their masses? Between their weights on earth?

If a cart of 4 kg mass has a force of 8 newtons exerted on it, what is its acceleration?

Why does the liquid thermometer work?

What energy do electrons have when they are farther away from the nucleus?