The orbit of a spacecraft around the Sun has a perihelion distance of 0.1 AU and an aphelion distance of 0.4 AU. What is the semimajor axis of the spacecraft? What is its orbital period?

Feng and Isaac are riding on a merry-go - round. Feng rides on a horse at the outer rim of the circular platform, twice as far from the center of the circular platform as Isaac, who rides on an inner horse.

Heat is an exchange of internal energy from one system to another due to

Which of the following is true for balancing equations? A. There must be an equal number of atoms of each element on both sides of the equation. B. The number of products should be equal to the number of reactants. C.

The unit of power is the watt.

A solid disk of radius 5.50 cm and mass 1.25 kg, which is rolling at a speed of 1.50 m/s, begins rolling without slipping up a 10.0° slope. How long will it take for the disk to come to a stop? Express your answer with the appropriate units.

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?