Calculate the resistance of the filament of a 40 Watt lightbulb if it draws 3 amperes when 120V are impressed across it

How society has been benefited by the knowledge of physics

Which piece of evidence from the article explains WHY the sun has a larger force of gravity than the Earth? (A) Isaac Newton, an English scientist, discovered a law, or truth, about gravity in the late 1600s.

A stapler is an example of which simple machine? inclined plane screw lever pulley

The rocket-driven sled Sonic Wind No. 2, used for investigating the physiological effects of large accelerations, runs on a straight, level track that is 1080 m long. Starting from rest, it can reach a speed of 1560 km/h in 1.70 s.

Which if these events happens first in earths polar regions

Race car drivers must slow down as they make turns on the track. This is best explained by the law of inertia. Which statement best describes inertia for the car going around a turn? A) A body in motion stays in motion at the same speed.

What is is the ratio of the distance over which the force is applied to the distance over which the load is moved

What factor can increase the potential energy of an object? A Decrease in speed B Decrease in density C Increase in temperature D Increase in height from the ground?

Microwave ovens emit microwave energy with a wavelength of 12.3 cm. What is the energy of exactly one photon of this microwave radiation?

When light bounces off a surface, which component will be reflected more - the component that is parallel to the surface, or the component that is perpendicular to the surface, and why?