Why must you repeat steps three and four in the scientific method

Jeffery gains super strength and pushes two different objects with the same amount of force. Object A accelerates at 40 m/s2, and object B accelerates at 2 m/s2. Which object has a higher mass?

Fossil fuels are an important natural resource used by society. Which of the following best describes fossil fuels? a. They are any liquid fuel derived from once-living matter. b. They are organic fuels derived from ancient plants and animals. c.

What grade of sprain is a completely torn ligament?

9. In 35 s ... a pump delivers 55,000 g of oil into a barrel on a platform 25 m above the pump intake pipe. a. Calculate the work done by the pump. 25m b. Calculate the power of the pump.

Starting from rest, a DVD steadily acceleration to 580 rpm in 1.0 s, rotates at this angular speed for 3.0 s, then steadily decelerates to a halt in 2.0 s. How many revolutions does it make?

A scientist has been tracking and studying a population of deer in Yellowstone National Park. He surveys the population every six months. Usually, the population is thriving and has a gene pool with a wide variety of traits.

How long will it take a bike traveling at 5 meters per second to travel 25 meters south? A. 5 s B. 0.2 s C. 5 s south D. 0.2 s south

Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a frictionless 30.0-degree incline. The vertically hanging mass is 6.

The coordinates 40 degrees north and 100 degrees east falls in what country?

Which type of radio waves have the highest frequency and are used in radar detection? microwaves x-rays waves infrared waves gamma waves