Which of the following phenomena provides evidence of electric fields in the atmosphere?

a.) lightning

b.) clouds

c.) rainbows

d.) wind

What is the rate at which work is done in lifting a 35 kg object vertically at a constant speed of 5 m/s? 1 1700 W 2 340 W 3 180 W 4 7.0 W

A 5.00 kilogram mass is travelling at 100 meters per second. Determine the speed of the mass after an impulse with a magnitude of 30.0 newton seconds is applied.

What is the differnce in sturtures with living and non living cells

The universal law of gravity states that all objects attracts all other objects.

List four functions of a graph.

What should you do when operating a boat in large waves and high wind?

A planetary nebula forms when the outer layers are expelled from which type of star?

During a medical condition screening lung capacity testing is a standard procedure. True of false

Which of the following is a unit of energy found in food? a). vitamin b) calorie c) nutrient d) water

As one goes from left to right in a period, which of the following is true? A. The number of protons decreases. B. The number of valence electrons increases. C. both A and B D. none of the above