A 2.1w iPod is used for 30 mins. How much energy is used?

What types of mediums are involved in the energy transfer

Compare and contrast bio-mass and hydroelectricity as sources of energy.

Use the diagram to answer each question. Why are the field lines of the magnetosphere farther apart on the side of Earth facing away from the sun?

You swing a bucket of water in a vertical circle of radius 1.4 m. What speed must the bucket have if it is to complete the circle without any water spilling?

A 55.0-g sample of hot metal initially at 99.5oC was added to 40.0 g of water in a Styrofoam coffee cup calorimeter. The water and calorimeter were initially at 21.0oC. If the final temperature of mixture was 30.

Who first described the double-helix structure of DNA?

Suppose you are holding a basketball while standing still on a skateboard you are and the skateboard have a mass of 50 kg you throw the basketball with a force of 10 N what is your acceleration before and after you throw the ball

Which nitrogen base sequence is the partner of C-A-T-C-G-A? O C-A-T-C-G-A O G-T-A-G-C-T OT-G-C-T-A-G O G-C-A-T-G-T TI

What is the kind of energy that comes from movement?

The average kinetic energy of 1 mole of a gas at 273 degrees Celsius is: 6.81 x 103 J 3.40 x 103 J 1.51 x 103 J 6.72 x 101 J