What part of the microscope controls how much light is allowed to pass through

What kind of water that most used in industrial

What do the arrows in food chains represent

Air is being blown into a spherical balloon at the rate of 1.68 in. 3/s. Determine the rate at which the radius of the balloon is increasing when the radius is 4.70 in. Assume that π = 3.14.

What are some indicators that a chemical reaction is occurring? Check all that apply. the formation of bubbles a change in size a change in color the formation of a liquid the formation of a precipitate

A system of two charges has a potential energy of - 5 joules. Which of the following is a possible potential energy for the system after it has been permitted to accelerate for a few seconds?

After creating a question and forming a hypothesis, what is the next step in the scientific method

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?