In a system how much energy will be transferred or transformed at the end a a cycle

A. 10% B. 50% C. 90% D. 100%

Does electricity travel at the speed of light?

What is carnot engine. express the relation for its efficiency?

Where in our daily lives do we encounter "background" radiation

When an object experiences centripetal acceleration, in which direction does it accelerate?

What is the density of a rock which has a mass of 35 grams and a volume of 7.0 cubic centimeters?

Tom stops using a new skin cream for five days to determine if the cream is the cause of a recent rash. What stage of the scientific method is Tom using?

Use your observations to determine qualitatively how the strength of the electric interaction between charged objects depends on the distance between them. Explain your reasoning (this is trickier than it might seem at first).

Far from any other masses, two masses, m1 and m2, are interacting gravitationally. The value for the mass of m1 suddenly doubles. What happens to the value of the gravitational force that mass m2 exerts on mass m1?

Which of the outer planets are most like Earth? How?

The pressure inside a champagne bottle can be quite high and can launch a cork explosively. Suppose you open a bottle at sea level. The absolute pressure inside a champagne bottle is 6 times atmospheric pressure; the cork has a mass of 7.