Light waves from the sun can travel through outer space and reach the earth. This suggests that light is a (n)

A) mechanical wave.

B) compression wave

C) Longitudinal wave

D) electromagnetic wave

How do the properties of an electromagnetic wave change as a result of increasing the period of the wave?

You have been feeling stressed lately, and you know that you tend to overeat when you are stressed. What can you do to combat this problem? Exercise to reduce stress Sleep fewer hours every day Eat sweets to feel happier Embrace your moodiness

What statement best explains their findings? A) The downward force of gravity is less on the notecard because it has less mass. B) The upward force of friction is greater on the notecard than the other objects.

A stone falls from a ledge and takes 8 seconds to hit the ground the stone has an original velocity of 0m/s how tall is the ledge

Sr-90 has a half-life of T1/2 = 2.85 a (years). How much Sr-90 will remain in a 5.00 g sample after 5.00 a? Show all of your work. (2 marks)

An exhausted bicyclist pedals somewhat erratically when exercising on a static bicycle. The angular velocity of the wheels follows the equation? (t) = at? bsin (ct) fort?0, where t represents time (measured in seconds), a = 0.500 rad/s2, b = 0.

This boy uses a force to lift a heavy rock. (He is carrying it.) What can the boy do if he wants to lift the same rock more quickly? A. use greater upward force B. use greater downward force C. decrease the force of gravity D.

The difference in electronegativity values between H and O is 1.4. What type of bond will these elements form?

True or false. when light passes from one medium to another the speed changes.

Examples of a scalar