A car travels west for 240km in 4 hours. What is the car's velocity?

Ten kilograms of a substance has a latent heat of 1000 J/kg. How much energy does it take to change the phase of this substance?

A wave travels with a velocity of 8000m/s and a frequency of 2kHz. The wavelength of this wave is?

The graph indicates what about the relationship between wavelength and frequency

A 1.5 wire carries a 8 A current potential difference of 89 V is applied. What is the resistance of the wire

A batter hits a pop-up straight up over home plate at an initial velocity of 15 m/s. The ball is caught by the catcher at the same height that it was hit. At what velocity does the ball land in the catcher's mitt?

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?