Why is the air around a refrigerator immediately warm?

An electron in an atom's orbital shell, labeled X in the model below, released enough energy to move to a different orbital shell. Which of the two orbital shells would the electron have the possibility of moving to

A 3.8kg object is lifted 12 meters. Approximately how much work is performed during the lifting?

A straight section of silver wire has a cross sectional area A=2.0 mm2. A total of 9.4*1018 electrons pass through the wire in 3.0s. The conduction electron density in silver is 5.8*1028 electrons/m3.

Un esquiador parte del reposo y se desliza pendiente abajo recorriendo 9m en 3s, con una aceleración constante calcular aceleración y el tiempo que tardará en adquirir la velocidad de 24m/s con la misma aceleración

The rainbow is a result of a. Diffraction of the light. b. Interference of the light. c. Dispersion of the light.

If an astronomical light source were moving toward us, then what would be observed? (a) a blue shift (b) a shift toward longer wavelengths (c) a shift toward lower frequencies (d) a sonic boom

How much work must you do to push a 12 kg block of steel across a steel table at a steady speed of 1.3 m/s for 7.6 s? the coefficient of kinetic friction for steel on steel is 0.60?

An Archer needs to hit a bull's-eye On Target at eye level of 60 feet away is the Archer fires the arrow from the eye level with a speed of 47 ft/s at an angle of 25 degrees above the horizontal, will the arrow hit the target

What type of wave is a sound wave A. transverse wave B. longitudinal wave C. light wave D. elctromatic wave

Na+/k+-atpase is considered to be an electrogenic pump because