Determine the mechanical energy of this object: a 1-kg pendulum has a speed of 2 m/s ar a height of 1 meter.

A. 9.8 J

B. 11.8 J

C. 2 J

D. 7.8 J

The addition of heat energy to a system always causes the temperature of that system to increase. true or false

How is energy conserved in:pushing a car uphill

A monochromatic (single frequency, single wavelength) light ray in air (n = 1) enters a glass prism (n = 1.5). In the glass prism a. both the frequency and the wavelength are the same as in air b.

What do magnets and electricity have in common

What happens to water vapor as it rises in the atmosphere? A. Heats and condenses B. Heats and expands C. Cools and condenses D. Cools and expands

For each case, identify the force (including its direction) that causes the acceleration. (a) A sprinter at the very start of the race.

Select the effects of radiation below that are stochastic: associated with short-term, high-level exposure associated with long-term, low-level exposure include cancer and other DNA mutation include burns and radiation sickness

On the modern periodic table, elements are ordered according to what?

Jack drops a stone from rest off of the top of a bridge that is 24.4 m above the ground. After the stone falls 6.6 m, Jill throws a second stone straight down. Both rocks hit the water at the exact same time.

How is Electric current able to flow?