How do you best describe hypothesis? A. a carefully researched answer

B. a qualitative control

C. the collection of data

D. a possible answer to a question informed by observations

Aleksei's family purchased a new water heater that is a heat pump. After installation, Aleksei noticed that the room containing the new water heater felt cooler than the rest of the house.

Which describes refraction

What is the minimum work needed to push a 920-kg car 310 m up along a 6.5 ∘incline? Ignore friction. Express your answer using two significant figures.

A ball is thrown with an initial speed of 20m/s at an angle of 60 to the ground. If air resistance is negligible, what is the ball 's speed at the instant it reaches its maximum height from the ground.

The resistance of a liquid to flowing is its? a. pressure. b. temperature. c. viscosity. d. volume.

2x^2:3=dg solve for x

A 2.25-kg block is released from rest on a ramp of height h. when the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.

Which of the following are steps for balancing chemical equations? Check all that apply. ] A. Multiply the reactants to get the products. B. Change subscripts. O C.

1. Why does the water vapour in clouds condense? 2. Explain why you can see clouds but not see the water vapour in the air

What are some similarities between electricity and gravity?