When salt dissolves in water, what type of change occurs?

A. physical only

B. chemical only

C. physical and chemical

Based on the law of conservation of energy hiw can we reasonably improve a machines ability to do work

The quarterback throws a football at 25 m/s at a certain angle above the horizontal. If it took the ball 2.5 s to reach the top of its path, how long was it in the air?

How to find force if one object when given mass acceleration and pulling force if another object

What control what enter and leaves the cell in a animal cell

Explain what happens to the energy in a group in a system if one object loses energy according to the Law of Conservation of Energy.

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?

Which of the following is an example of potential rather than kinetic energy? a. water rushing over Niagara Falls b. a molecule of glucose c. a crawling beetle foraging for food d. light flashes emitted by a firefly

If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa], what is the area of the surface in units of square milimeters [mm2 ]?

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. She comes up with the perfect alloy and saves a sample of it. Which mass and volume measurements correspond to this sample? 7 g and 2.

What must be your car's average speed in order to travel 235km in 3.25 hours?