Nan is rubbing a rock on the sidewalk. The rock gets smaller, and

dust is formed. Which type of change is happening?

O a change of state

O physical weathering

chemical weathering

O a new substance being formed

Is my answer correct? question Scott was watching the electrician install a new light fixture. Scott noticed that when he was finished, he carefully wrapped some wires with plastic caps and black plastic tape.

What is the speed of sound for a noise that travels 2 km in 5.8 s? There's answers for this already but they are two different ones.

In what state of must matter exist for fusion reactions to take place?

Polarized sunglasses work by A. blocking light waves that vibrate in one plane. B. gradually refracting light as it passes through the lenses. C. reflecting most of the light that strikes the sunglasses. D.

When do land breezes occur? A. at night B. during the day C. both day and night D. at thermal equilibrium

What is the speed of a 1.0 * 103-kilogram car that has a momentum of 2.0 * 104 kilogram∙meters per second east?

4. How does an increase in orbital radius affect average orbital speed

What happens when a plastic lid sprinkled with iron filings is placed over a magnet?

A stuntman drives a car with a mass of 1500 kg on a drawbridge. The car accelerates with a constant force of 10,000 N. While he is driving, the drawbridge is raised to an incline of 30°.

In this channel of communication, messages are carried by sound and light waves. a. teleconference b. face-to-face c. voicemail d. hard copy memos