Explain how a scientist could change a substance's pH from

A. An acid to a neutral.

B. A base to a neutral

C. Create a salt

The electric meter for a new house is furnished by the A. electrician. B. electric company. C. homeowner. D. contractor.

Saturated steam at 125 kpa is compressed adiabatically in a centrifugal compressor to 700 kpa at the rate of 2.5 kg⋅s-1. the compressor efficiency is 78%.

What simple machines would move or turn an object? Question 3 options: wheel and axle lever screw wedge 4. A see-saw is an example of what type of lever? Question 4 options: First Class Second Class Third Class Fourth Class

Light is incident on a piece of glass in air at an angle of 33 degrees from the normal. If the index of refraction of the glass is 1.5, what is the angle in degrees that the refracted ray makes with the normal?

How can potential energy be related to kinetic energy?

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planers in orbit around the Sun.

What wave-like property of light causes it to bend when encountering an opening? A. Reflection B. all the above c. Refraction d. none of the above e. diffraction

Which of the following statements describe sliding friction? Select all that apply. 1.) a force that causes an object to increase speed 2.) a force in which one of the objects involved must be a liquid or a gas 3.

What do a broken rode and a volcano eruption have in common

What is the input of energy for a device that provides 50 units of useful energy and has an efficiency of 0.55?