The earth has a circumference of about 25000 miles. How is it expressed in scientific notation?

What are two components that make up orbital motion

Which of the following will not conduct an element current? A. pure water b. tap water c. aquarium water d. ocean water

What type of energy is formed when chemical bonds are broken? A. Chemical energy B. Thermal energy C. Radiant energy D. Light energy

A rollercoaster car with a mass of 15 kg rolls down a ramp that is 10.0 meters tall. A) Draw a sketch of the situation.

Which of the following is an example of qualitative data?

If two parallel light rays hit a plane mirror, what will be their orientation to one another after they reflect? a. they will remain parallel. b. they will be perpendicular. c. it depends on the initial spacing between the light rays. d.

To extend the electrical system between the main panel and the secondary panel, the electricians used A. Receptacles B. Circuit breakers. C. feeders. D. insulators

Men in the age of 18-34 years need to be able to run a marathon in 3 hours and 10 minutes to qualify for the Boston Marathon. How many seconds is this? Show your work.

What is the center of our solar system?

A - 4.0-µC charge is located 0.45 m to the left of a + 6.0-µC charge. What is the magnitude and direction (to the right or to the left) of the electrostatic force on the positive charge?