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

A. physical only

B. chemical only

C. physical and chemical

2. When pressing the accelerator on a car, the energy of the fuel is transformed into the energy that makes the car move. mechanical; chemical chemical; mechanical

A transverse wave on a rope is given by y (x, t) = (0.750cm) cos (π[ (0.400cm-1) x + (250s-1) t]). find the period

Which of the following statements about current theories on global warming is true? a. Scientists generally agree that global warming is taking place. b. Some scientists think that we should accelerate global warming. c.

Why there are not green stars?

What is centripental acceleration

When all parts of a circuit are composed of conducting materials, the circuit is said to be A. parallel. B. closed. C. open. D. shorted.

You travel an an average speed of 20 km/h in a straight line to get to your grandmothers house. It takes you 3 hours to get to her house. How far away is her house from where you started?

A boat with an anchor on board floats in a swimming pool that is somewhat wider than the boat. Does the pool water level move up, move down, or remain the same if the anchor is (a) dropped into the water or (b) thrown onto the surrounding ground

In July 2005, NASA's "Deep Impact" mission crashed a 372-kg probe directly onto the surface of the comet Tempel 1, hitting the surface at 37,000 km/h.

What conversion factor is needed to change from kilometres to meters