What happens to wavelength as a wave leaves the air and enters the Perspex?

a. It decreases

c. It stays the same

b. It increases

d. It becomes irregular

In a few sentences, compare and contrast pressurized water reactors and boiling water reactors.

Two wagons of equal mass are filled with an equal mass of bricks. Person A pushes one wagon with twice the force that Person B pushes the second wagon. How is the acceleration affected? A.

Direction of current in a solenoid depends on the direction of magnetic field

A low-pressure system is generally associated with what type of weather condition? A. thick cloud cover B. increasing altitude C. low humidity D. clear sky

Because gasoline is less dense than water, drums containing gasoline will float in water. suppose a 240-l steel drum is completely full of gasoline.

Cho is using technological design to build a clock based on the apparent motion of the Sun. Which of the following would be the best measure of success for Cho's clock? A. Cho's clock works even at night. B.

Suppose that a car traveling to the west (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration. a) The car is decelerating and its acceleration is positive.

What are the moons of the outer planets made of, and how is their composition different from that of our Moon?

What is the main difference between geocentric and heliocentric models of the solar system

A flywheel in a motor is spinning at 530 rpm when a power failure suddenly occurs. The flywheel has mass 40.0kg and diameter 75.0cm. The power is off for 39.