Are the following physical or chemical changes?

1. Weathering:

2. Deposition:

3. Metamorphism:

4. Melting:

A car has the mass of 985kg and kinetic energy is 56,000 what is the speed in km/h (y'all need to stop ignoring)

25. You are asked to find the area of a room that is 4.56 m long and 5.668 m wide. How many significant figures should you show in your answer? A. 5 B. 3 C. 7 D. 4

The beam in a cathode ray tube is moved by an electric force. What did scientists infer about atoms from this experimental result? O A. Atoms are small particles that cannot be destroved or divided. O B. Atoms have a dense, positively charged center.

When two forces act on an object in the same direction the resultant force is equal to

The symbol for speed is v and the symbol for time is t. If v = 13t + 11, then what is t?

If the energy stored in the fully charged battery is used to lift the battery with 100-percent efficiency, what height is attained? Assume that the acceleration due to gravity is 9.8 m/s2m/s2 and is constant with height

How does the mass of an astronaut change when she travels from earth to the moon? how does her weight change?

If an object has a mass of 20 grams and a volume of 40 cm3, what is its density in g/cm3?

Discuss how systematic and random errors influence the precision and accuracy of an experiment.

Matthew rolls a bowling ball with a speed of 2 meters/second. The ball hits the pins with 1.8 joules of kinetic energy. The mass of the bowling ball is kilograms. NextReset