A star has a surface temperature of 30,000 K. At what wavelength does the peak radiation occur? 100 nm

97 nm

87 nm

0.01 nm

Scientists can find the absolute age of a rock by using

Which of the following plays a major role in creating deep ocean currents A. daily rides B. earth rotation C. Winds patterns in atmosphere D. changes in temperature in ocean water

The angular velocity in rad/s if the minute hand of a watch is:

You are explaining to your friends why astronauts feel weightless while orbiting in the space shuttle. They ask you to prove this mathematically. Calculate the acceleration of gravity 250 km above the Earth's surface in terms of g. (Use Rearth = 6.

A person is pulled to the right on a sled (total mass of 52.9 kg) across the surface of a frozen pond with a force of 67.7 Newtons so that they move with a constant velocity. What is the force of friction acting on the sled?

What kind of energy does a light bolt have?

What renewable source would be affected by cloud clover

The human body stores chemical energy from digested food. Some of the chemical energy is converted into mechanical energy when the body moves. Which statement is best supported by this information? a.

Does light speed up or slow down when it travels from air to liquid

What is Earth's innermost layer?