Exposure to what type of radiant energy is sensed by human skin as warmth?

A: Ultraviolet

B: X-rays

C: Infrared

D: Gamma rays

Which mineral most likely has a shiny appearance? A. Feldspar B. Fluorite C. Galena D. Quartz

An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a circuit that "clicks" in response to current. The faster the current, the more clicks per minute.

What do we measure mass in? A) Meter B) Liters C) Grams

Which of the following are vectors? Check all that apply. O A. energy B. displacement O C. force D. mass E. momentum F. speed G. time O H. velocity

If the molecules in the desk in front of you are moving, then why is the desk standing still?

When a certain isotope, such as U-238, is hit by a neutron, it will always split into the same smaller nuclei. true or false?

A person walks 7 feet east stops and walks 7 feet west

Using the drop-down menus, choose the right government service to complete each sentence. Providing a free public education for all children is an example of supporting. Fighting fires is one way in which the government ensuresfor citizens.

A galilean telescope adjusted for a relaxed eye is 36cm long. If the objective lens has a focal length of 40cm, what is the magnification?

If a car goes along a straight road heading east and speeds up from 45 ft/s to 60. ft/s in 5 sec, calculate the acceleration