Bohr believed that light is emitted by an electron when

a. the electron completes a revolution in its orbit.

b. the electron's energy changes.

c. the electron's fixed orbit shifts.

d. the electron changes direction in its orbit.

Which letter represents the wavelength of the wave? a. a.

What if a wave reaches a type of matter it cannot pass through? Does it just stop moving? If not, where does it go?

The specific heat capacity of ice is about 0.5 cal per gram per degree Celsius. Suppose it remains at that value all the way to absolute zero. Determine the quantity of heat needed to change a 1 g ice cube at absolute zero to 1 g of boiling water.

Concepto de educacion fisica.

Describe how kinetic and potential energy change as a diver climbs up to a diving board and then dives into the water below.

Describe the factors that form deep currents

A comet is cruising through the solar system at a speed of 50000 kilometers per hour for 4 hours time. What is the total distance traveled by the comet during this time in kilometers, miles, and light years?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?

What are illuminated objects?

During one year a population of blue jays has zero population growth. which must be true about the blue jay population at the end of the year compared to the beginning of the year?