What type of system allows matter and energy to enter and exit?

A. Connected

B. Isolated

C. Closed

D. Open

How much heat must be absorbed by 125 g of ethanol to change its temperature from 21.5 oC to 34.8 oC?

The density of air under normal conditions is about 3 1.2 kg / m. For a wind speed of 10 m/s, find (a) the actual power carried in the wind; (b) the maximum power (Betz limit) extractable by a wind turbine with a blade area of 10 m2;

If the amplitude of the Waves coming from a light bulb decreased what would you expect to happen.

Classify each of the following mixtures as homogeneous or heterogeneous: a mixture of oil and water air cereal in milk a glass of tea

Mass is a measure of weight. True False

Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid. suppose a chunk of iron with a mass of 390.0 g in air is found to have an apparent mass of 350.5 g when completely submerged in an unknown liquid.

6. What does the slope of a velocity-time graph indicate?

How high was a brick dropped from if if falls in 2.5 seconds?

what is not a type of model that is commonly used in science and uses familiar things to describe unfamiliar things?

A brake warning lamp on the dash remains on whenever the ignition is on. If the wire to the pressure differential switch (usually a part of a combination valve or built into the master cylinder) is unplugged, the dash lamp goes out.