How many calories are equal to one BTU? (One calorie = 4.186 J, one BTU = 1 054 J.)

a. 0.252b. 3.97c. 252d. 397

An atom is the largest level of organization in living things the smallest level of organization in living things a group of cells that work together a group of molecules that work together

A stationary, 1000 kg car starts at the top of a 10 meter hill. What is the total energy of the car

The radius of the earth's very nearly circular orbit around the sunis 1.5/times10^11 m. Find the magnitude of the earth's velocity as it travels around thesun. Assume a year of 365 days. Express your answer using two significant figures.

Which statement about energy transfer in a wave is true?

While you're in a bus that moves at 100 km/h, you walk from the back to the front at 10 km/h. What is your speed relative to the road outside? a) 90 km/h b) 110 km/h c) 100 km/h d) 10 km/h

Molecules at room temperature move freely. What happens to the molecules when heat is removed until it freezes? Molecules group together Molecules slow down and contract Molecules speed up and expand Molecules move freely

A spring is used in a lab. It is vibrated at different frequencies and the wavelength is recorded. Using the graph of the data, what is the relationship found between frequency and wavelength? A) Frequency and wavelength are inversely related.

How do you describe the frequency of waves perceived by the observer from the moment the source appears to the moment it disappears?

What causes the stars to appear to move across the night sky?

Two waves collide and the temporary combined waves that results is smaller that the original wave. which term describes this interaction? A. destructive interference B. standing wave formation C. diffraction D. constructive interference