It takes 63 W to power a ceiling fan. The energy output of the fan is 50 W. Calculate the efficiency of the fan. Round your answer to the nearest percentage. %

How do you find the force of gravity?

A potential energy function is given by u (x) = (3.00n) xâ (1.00n/m2) x3. at what position or positions is the force equal to zero?

In what regions of the electromagnetic spectrum is the atmosphere transparent enough to allow observations from the ground?

Two masses, MA and MB, with MB = 2MA, are released at the same time and allowed to fall straight down. Neglect air resistance. When we compare their kinetic energies after they have fallen for equal times, we find thata. KB = KA. b. KB = 2KA. c.

How much would a 50-kg object weigh on Mercury (gravity on Mercury is 3.59 m/s2) ? A. 13.9 N B. 179.5 N C. 310.5 N D. 490.0 N

Which of the following is true about cells? A. Cells have specialized components that perform different, specific functions. B. A cell's components are all identical and perform the same function. C.

How much heat is contained in 100 kg of water at 60.0 °C?

Which of the following statements is the best definition of weather? Weather is the current conditions in the atmosphere. Weather is the usual conditions in the atmosphere. Weather is the average conditions in the atmosphere.

Analyze: In the series circuit what characteristic was common throughout the experiment? What changed as you added more light bulbs?

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.