When the photosphere is covered, the corona, chromospheres, and prominences are visible.

true or false?

Why energy must flow from the sun's core to its surface?

What is the best explanation of work? A. Work occurs when a force acts on an object. B. Work occurs when force acts to hold an object in place. C. Work occurs when energy acts on an object. D.

5. A 1052 kg truck, starting from rest, reaches a speed of 20.0 m/s in 6.20 s. a. What is the average acceleration of the truck? b. What is the magnitude of the average net force on the truck during the 6.20 s?

If an automobile had a 100%-efficient engine, transferring all of the fuel's energy to work, would the engine be warm to your touch? Would its exhaust heat the surrounding air? Would it make any noise? Would it vibrate?

How many protons are found in + 1C of charge

An object is undergoing shm with period 0.900 s and amplitude 0.320 m. at t = 0 the object is at x = 0.320 m and is instantaneously at rest. calculate the time it takes the object to go (a) from x = 0.320 m to x = 0.160 m and (b) from x = 0.

Your friend states in a report that the average time required to circle a 1.0-mi track was 49.325 s. This was measured by timing 10 laps using a stopwatch with a precision of 0.01 s. Do you believe his results are reliable? Explain.

The forklift exerts a 300.0 N force on the box and moves it 15.0 m into the air. How much work does the forklift do? A. 500 J B. 1.50 * 10^3 J C. 4.50 * 10^3 J D. 0.00 J

Why the room gets hot even we open the door of refrigerator?

What effect will taking a dose of antibiotics that is too small have on the bacteria you are trying to destroy? a. all of the bacteria will pass on their genes b. none of the bacteria will pass on their genes c.