Name two conditions that are necessary for fusion to occur in the Sun's core.

Part a consider a bird that flies at an average speed of 10.7 m/s and releases energy from its body fat reserves at an average rate of 3.70 w (this rate represents the power consumption of the bird). assume that the bird consumes 4.

If the kinetic and potential energy in a system are equal, then the potential energy increases

What makes it possible for us to see the moon from earth? A. Light from earth shines on the moon's surface, making it bright. B. The moon absorbs light during the day and reflects that same light back at night. C.

As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. Calculate the pressure exerted on the floor by the heel if it has an area of 1.83 cm2 and the woman's mass is 54 kg. Express the pressure in Pa.

Which describes the molecular motion of a solid nickel marble rolled across the floor? A. the constant vibration of the nickel atoms that make up the marble B. the motion of the nickel atoms due to contact with the floor C.

Emission of light from an atom occurs when an electron

Which is an example of transfroming potential energy to kinetic

Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that's above the ball.

Choose The units of 1/4πε0 are: A. N2C2 B. N • m/C C. N2 • m2/C2 D. N • m2/C2 E. m2/C2

What does a fern ultimately depend on as an energy source?