What will cause a backpack sitting on the floor of the school bus to suddenly fly forward

What type of weathering has the greatest affect om Earth's surface

How does the presence of a catalyst affect the activation energy of a reaction?

The escalator at st. petersburg metro in russia has a vertical rise of 195.8 feet. if the angle of elevation of the escalator is, find the length of the escalator.

The distance stretched or compressed from the rest position for a mass on a spring is represented by which symbol?

There are 180 days in a school year. how many are. in a year

What is the difference between speed and velocity and give an example.

Water flows over a section of niagara falls at the rate of 1.2x10^6 and falls 50.0 m. how much power is generated by the falling water

What is the darkest side of the moon called?

Brian is a healthy young man. He has been training with his teammates for a 50-yard dash for months. However, even with practice, he cannot run fast enough to qualify. What is the most likely reason that Brian can't qualify?

1. Are BEVs or hydrogen fuel cell vehicles a more promising transportation technology for the future? 2. Should car companies be required to produce electric cars?