Meg runs a 10-km race in 45 minutes (0.75 hours). what was her speed in kilometers per hour? a. 7.5 km/hr b. 4.5 km/hr c. 13 km/hr d. 22 km/hr

What instrument uses a magnetic field to magnify imags up to 100000000?

Snowboarding cautiously down a steep slope at a speed of 5.3 m/sec, Sarah, whose mass is 53.0 kilograms, is afraid she won't have enough speed to travel up a slight uphill grade ahead of her.

If a person weighs 900 N on Earth, then that same person is recorded to weigh 2125 N on Planet X, what is the acceleration due to gravity of Planet X? 40.98 m/s^2 5.78 m/s^2 23.16 m/s^2 33.09 m/s^2

Which portion of the spectrum can be seen

Which of the following describes the least amount of work being done A. Steam turning a turbine B. A batter hitting a baseball C. A ball hanging from a tall pole D. Wind turning a windmill

Which statements about eclipses are true? Check all that apply. Earth's shadow creates a solar eclipse. A total lunar eclipse has a reddish color. The moon moves between Earth and the Sun during a solar eclipse.

Who would use more energy in a day - someone who plays a lot of sport or someone who plays a lot of computer games

If you know the wavelength of any form of electromagnetic radiation, you can determine its frequency because?

What are the relationships of the different types of matter, mass, and the change in the average kinetic energy of particles?

A steamboat moves with velocity components of 6 km/hr along the x direction and 8 km/hr along the y direction. what is the direction of the steamboat with respect to the x axis?