When a light wave enters into a medium of different optical density,

a. its speed and frequency change.

b. its speed, frequency, and wavelength change.

c. its speed and wavelength change.

d. its frequency and wavelength change?

How was the formation of the outer planets affected by their distance from the sun?

In 1999, what percentage of 36-month-old toddlers had been toilet trained? 20 percent 40 percent 60 percent 80 percent

His is a force that acts over a distance, can not be seen, and causes like poles to repel and opposite poles to attract. What is this force? A) gravity B) friction C) magnetism D) air resistenace

A car traveling at 98 km/h comes to a stop in 15 s. What is the car's acceleration in km/h/s?

One of the first recorded uses of forensic entomology being used in a criminal case happened in what time period?

A box is at rest on a table. What can you say about the forces acting on the box? The upward ___ and the downward___ are balanced Applied force Frictional force Normal force Drag force Gravitational force Tension

When the sun warms the sidewalk on a hot sunny day, what type of energy conversion occurs?

Which statements about acceleration are true? Check all that apply. A. is the symbol used for acceleration. B. The SI units for acceleration are m/s. C. Acceleration is a scalar quantity. D. Acceleration is calculated with the equation.

What is the acceleration due to gravity on Mars? a. 9.8 m/s2 c. 12.2 m/s 2 b. 3.7 m/s2 d. 0.3 m/s2

What two pieces of information do you need to know to get from one location to another?