The law of reflection states that if the angle of incidence is 19 degrees, the angle of reflection is ___ degrees.

A stone is thrown vertically upward with velocity 9.8ms 1) calculate the time taken to reach maximum height. 2) what is the maximum height reached 3) what is time taken to reach ground 4) what velocity it reaches the ground

Which states of matter can change shape?

What is a consequence of the second law of thermodynamics? - Activation energy from the environment is required for every energy transfer. - Energy cannot be created or destroyed but it can be transferred.

If a reaction is exothermic, then which of the following statements is always true? If a reaction is exothermic, then which of the following statements is always true? The products have lower potential energy than the reactants.

What is the average speed, over the first 4.0 s of its motion, of a pebble released from rest off a bridge? What is the average speed, over the first 4.0 s of its motion, of a pebble released from rest off a bridge?

A rotating water pump works by taking water in at one side of a rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120 m starts from rest and accelerates at 30.

Which describes a property shared by ultraviolet light and X-rays? A They are both transverse waves. B They share the same wavelength. C They contain less energy than visible light. D They both require a medium to travel through.

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates