Explain the differences between a physical and chemical change, and give examples of each.

16. A block is sitting on a ramp tilted from horizontal. The block is just about to slide. T he angle of the ramp relative to horizontal is 14 degrees. What is the coefficient of friction between the block and the ramp? a. 0.25 b. 0.97 c. 0.5 d. 0.

Phyllis had always been the one to take care of Douglas, now he feels as if it is his duty and privilege to take care of her, even though others don't agree.

In physical science class Jonathan says that inertia is a property of all objects with mass and velocity. Which of the following statements would be a correct response to Jonathan? A. Objects with mass and velocity do not have inertia. B.

On average, the Moon is three hundred and eighty thousand km (kilometers) from the Earth. How is this quantity expressed as a number?

Natalie accelerate her skateboard along a straight path from 0 m/s to 4.0 m/s in 2.5 s. find her average acceleration

A comet is a A. meteoroid that travels through Earth's atmosphere and hits the surface. B. meteoroid that burns up in Earth's atmosphere, producing a streak of light. C.

Can Someone explain the steps for this? A lovesick lad wants to throw a bag of candy and love notes into the open window of his girlfriend's bedroom above. Assuming it just reaches the window, he throws the love gifts at 16.

Which substance is a combination of different atoms?

If there are many forces acting on an object, how can the net force be 0:

What is a planetary nebula? a. leftover gas from a supernova explosion b. the ejected envelope of a giant star surrounding the remnant of a star c. a type of young, medium-mass star d. a planet surrounded by a glowing shell of gas e.