If a vector that is 3 cm long represents 30 km/h, what velocity does a 5 cm long vector which is drawn using the same scale represent?

Which best describes what is made of matter? all living things and objects all atoms all solid objects and atoms all living things

If the velocity of an object changes from 15 m/s to 50 m/s during a time interval of 4 s, what is the acceleration of the object?

Monochromatic light with a wavelength of 381 nm passes through a single slit and falls on a screen 85 cm away. If the distance of the first-order dark band is 0.43 cm from the center of the pattern, what is the width of the slit?

When do both hemispheres receive the same amount of the sun's energy?

A motorcycle, a car, a bicycle and a truck are moving at the same speed. which one has the gratest amout of kinetic energy?

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?