A planet orbiting a distant star has been observed to have an orbital period of 0.76 Earth years at a distance of 1.2 AU. What is the mass of the star the planet is orbiting? Round your answer to the nearest tenth.

A stone is thrown vertically upward from the roof of the building. Does the position of the stone depend on the location chosen for the origin of the coordinate system? Does the stones velocity depend on the choice of origin? Explain

Electromagnetic force is present when electromagnetic field is what?

Use the H-R diagram to answer the following questions. What is the approximate temperature of the supergiant Betelgeuse? Which star on this diagram is the most similar to the Sun in luminosity and temperature?

Tyler stands at rest on a skateboard. He has a mass of 120 kg. His friend (m = 60 kg) jumps into his arms at a speed of 2 m/s. If Tyler catches his friend, how fast will they move on the skateboard?

Find the direction (clockwise or counterclockwise) of the current induced in loop AA if II is steadily decreasing. The current in loop AA is clockwise. The current in loop AA is counterclockwise. The current in loop AA is zero.

There have been books written about how blood type affects personality or body shape. Knowing that blood type is determined by antigens on erythrocytes, are these claims scientifically valid? O True O False

A stone is dropped from a 80m bridge. How long does it take to fall?

How does an iron nail become a rusty nail

What is the velocity of a bullet train that moves 400 meters west over 3 minutes anad 20 seconds?

While in empty space, an astronaut throws a ball at a velocity of 12 m/s. what will the velocity of the ball be after it has traveled 6 meters?