Why does every element except hydrogen need at least one neutron and its nucleus?

Which of these statements about machines is false? a. Machines decrease the amount of work needed to do a job b. Machines decrease the force needed to get the work done, c. Machines increase the distance moved in doing the work d.

A descending elevator of mass 1,000 kg is uniformly decelerated to rest over a distance of 8m by a cable in which the tension is 11,000 N. The speed vi of the elevator at the beginning of the 8 m descent is most nearly?

What happens to the force between two charges if the distance between them is tripled?

What is the wavelenght and the frequencen of walkie-talkie?

What Do You Already Know about Density? Material Design. Number each material and sort the items in order from lowest (1) to highest (7) Density. -Chalk -Copper -Flour -Dry Beans -Talcum Powder -Wax -Wet Sand

You and your housemate have an argument over the cost of the electric bill. You want to turn off the outside porch light before going to bed each night.

Work is a product of A force and distance B force and heat energy C cause and heat energy D cause and effect

An exploration submarine should be able to descend 1200 m down in the ocean. If the ocean density is 1020 kg/m3, what is the maximum pressure on the submarine hull?

Why cooking pans don't have have metal handles?

Why will marchers at the end of a long parade following a band be out of step with marchers nearer the band