HELP PLS 100 POINTS IM TAKING A TEST RN One possible unit of speed is

A. miles per hour.
B. kilometers per hour.
C. light-years per century.
D. all of the above

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?