From which of these following we can hear the sounds

1) solid

2) liquid

3) gases

4) all of these

A 2 kilogram bowling ball is 2.5 meters off the ground on a post when it falls just before it reaches the ground it is traveling 7 m/s assuming there is no air resistance which statement is true A the mechanical energy is not conserved B the initial

Mr. F has taken in a lot of fluid and put out very little. During this period his heart rate has increased a little and his blood pressure has decreased a little. What do you infer from this? Select the best answer. A.

How are step-up transformers used in the transmission of electrical energy? A They decrease the voltage before it leaves a power plant. B They increase the voltage for efficient long-distance transmission.

When we observe a distant galaxy whose photons have traveled for 10 billion years before reaching earth, we are seeing that galaxy as it was when the universe was?

Calculate the momentum of a 2500kg car with a velocity of 20 m/s

Is a dimond a pure substance? yes or no

A stone is dropped from a height 1.8m. What will be it's velocity when it reaches the ground?

Is a brass trumpet a solution

What common laboratory measuring device will we likely always use in experiments that measure enthalpy changes?

An 3.7 lb hammer head, traveling at 5.8 ft/s strikes a nail and is brought to a stop in 0.00068 s. The acceleration of gravity is 32 ft/s 2. What force did the nail receive? Answer in units of lb.