What type of galaxy has mostly old stars, without a lot of star formation?

According to the ideal gas law, increasing the volume of a closed reaction container decreases the thermal energy because the A) R is divided. B) temperature increases. C) collision frequency remains the same.

How many protons neutrons and electrons does nitrogen have?

How many atoms of Aluminum are contained in this compound?

How does adding more of a substance affect it's density?

If a wave has a wavelength of 4m and a frequency of 2.5hz what is the velocity of the wave

Consider a helium balloon on a string tied to the seat of your stationary car. The windows are closed, so there is no air motion within the car. The car begins to accelerate forward. Which way will the balloon lean, forward or backward

The force of gravity acts upon meteors from the rocky asteroid belt between mars and Jupiter. Where is the force of gravity most likely to pull these meteors

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. Which of the following best describes how such a telephone is able to transmit and receive information? A.

Calculate the gravitational potential energy relative to the ground when an 82 kg person climbs to the top of a 2.0 m stepladder.

A rock is thrown from a cliff and hits the ground five seconds later at a distance of 50 m from the cliff how high was a cliff