We would expect the acid-base indicator, phenolphthalein, to be what color in an ammonia solution?

If a car headlight's light travels at the speed of light, then does the car technically travel at the speed of light since the headlights are part of a car, and the light is made from the headlights?

A ball is dropped from the top of a cliff. By the time it reaches the ground, all the energy in its gravitational potential energy store has been transferred into its kinetic energy store.

A block on the end of a spring is pulled to position x = a and released from rest. in one full cycle of its motion through what total distance does it travel a) 0.5 A b) A c) 2A d) 4A

In optics, how do you get the refractive index

What are geothermal heat pumps used for? a. Cooling and heating buildings b. Cooling buildings c. Heating buildings d. Heating water for using in homes

How long did the astronauts stay on the moon?

Brenda is standing on the beach; the sea is choppy. she observes that the crests of distant waves appear not only smaller, but also closer together than do the crests of waves nearer the beach. this example illustrates a depth cue known as:

If two waves in the same space interfere completely destructively, which of the following occurs? A. The amplitude decreases. B. The amplitude increases. C. The wave speed increases. D. The wave speed decreases.

An electric force exists between which pair of objects? Check all that apply. A) a neutral object and a negative object two negative objects B) a neutral object and a positive object C) two positive objects D) a negative object and a positive object

A person jogs 40 km in 32 minutes then 20 km in 22 minutes and finally 10 km in 16 minutes what is his average speed in in per minute