Which type of electromagnetic radiation cannot be focused?

A. Gamma rays

B. X-rays

C. Ultraviolet

D. Infrared

A 7 kg sled is initially at rest on a horizontal road. the sled is pulled a distance of 2.9 m by a force of 42 n applied to the sled at an angle of 30o to the horizontal. find the change in the kinetic energy of the sled.

The ancient indian game of chaturanga, from which the modern game of chess was derived, was played on a board with 64 squares.

12. A space walker conducts a sound experiment on a space walk by striking a tuning fork with a mallet. Instrumentation is used to detect sound waves. Which explains the results of this experiment? A.

Suppose a moving object has a kinetic energy of 100 J. What will the object's kinetic energy be if it's speed is doubled

The dodo bird is now extinct. What factor would not have led to its extinction? A) The forests the dodo lived in where cut down. B) Sailors landed on the island and killed many for food. C) It was well adapted to living on the island of Mauritius.

Relating to Newton's Third Law, action and reaction, what is the reaction when a rocket expels gas, smoke and flames from the nozzle end of the rocket engine?

Three light bulbs are connected to a battery in a series circuit. How will the bulbs behave if the circuit is closed?

Luke investigated the heating of water

In the nucleus of all atoms are sub-atomic particles called protons and neutrons. all protons have a positive charge.

In a polar covalent bond