All reactions require activation energy.

a. True

b. False

Carl and Mike start a 3 mile race at the same time. If Mike ran the race at 6 miles per hour and finishes the race 10 minutes before Carl, how fast does Carl run?

A man consumes 2055 kcal of food in one day, converting most of it to body temperature. If he loses half this energy by evaporating water (through breathing and sweating), how many kilograms of water evaporate?

When clouds typically produce precipitation and why?

Give an example in which the electrical energy changes to light energy

Describe all the ways that newtons laws can apply in a car crash

Organized elements into four groups based on properties

Microwave, radio signal, light, earthquake which does not belong

A 9.0-v battery is connected to a bulb whose resistance is 2.5 ω. part a how many electrons leave the battery per minute?

What is the basic unit of matter? atom cell bacterium molecule Description

A person fires a 38 gram bullet straight up into the air. It rises, then falls straight back down, striking the ground with a speed of 345 m/s. The bullet embeds itself into the ground a distance of 8.9 cm before coming to a stop.