A mover pushes a 30 kg crate across a level florr with a force of 250 N, but the crate accelerates at a rate of only 5.83 m/s squared because a friction force opposes the crate's motio. What is the magnitude of the force of friction?

In 2H2SO4, the number of hydrogen atoms is, the number of sulfur atoms is, and the number of oxygen atoms is. NextReset

Which best describes the relationship between humidity and air pressure? Humid air has higher pressure because of the heaviness of water. Humid air is lighter, so it has lower pressure. Air pressure is lower below sea level because of the humidity.

What are allotropes? Give an example.

Anything done scientifically can be relied upon to be accurate and reliable A. true B. false

Two football players collide on the field. Before the collision, their total momentum was 450 kgm/s to the north. What is their total momentum after the collision? A. More than 450 kgm/s north B. 450 kgm/s north C. Less than 450 kgm/s north D.

How do repeater stations improve the quality of a broadcast?

What is the total number of atoms in the following formula? CaBr2 04

The Amazon River is in Europe. True or False

A microwave oven operating at 120 volts is used to heat a sandwich if the oven draws 12.5 amperes of current for 45 seconds what is the power dissipated by the oven?

Which of the transformers are step-up transformers? Which of the transformers are step-down transformers?