The color of a star is

A) unimportant

B) determined by its location in the galaxy

C) cannot be determined

D) determined by its temperature

Rays of light moving upward through water toward the water-air boundary at angles larger than 488 to the nor - mal are totally reflected. No rays larger than 488 refract outside.

A vacuum cleaner has an energy input of 6.5 kWh and an energy output of 5.8 kWh. The efficiency of the vacuum cleaner, to the nearest percentage, is

You have created a document that uses the term Frank L. Wright over 30 times. You want to change every occurrence of this term to Frank Lloyd Wright. Which of the following would probably be most useful? a. Quick Part tool b.

Inside a space shuttle there are two identical boxes, but different content: one containts metal tools and the other foam for insulation. How can the astronaut know which is the one with the tools without opening it?

Calculate the density of mercury if 500 cm3 has a mass of 6.60 kg. Give your answer in g/cm?.

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?