A weightlifter lifts a set of 1250kg weights a vertical distance of 2m weight lifting contest. what potential energy do the weights now possess

A dart is loaded into a spring-loaded toy dart gun by pushing the spring in by a distance d. for the next loading, the spring is compressed a distance 2d. how much work is required to load the second dart compared to that required to load the first?

Why don't we feel pressure exerted by atmosphere?

What are some ways that electric fields are simalar to magnetic fields?

If element x has 28'protons how many electirons does it have

Whats the measure of the force of gravity on a object

Why are microwaves beneficial to use for transmitting information

A 75 kg runner taking part in a 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 32 meters. if he completes the 200 m dash in 20.

Thinking about the winter we missed out on this year. Calvin and his tiger go sledding down a snowy hill. There is friction between the snow and the sled, and there is air resistance.

what are the three types of solenoids, which one is the most common, and which one is used in pinball machines?

A sound wave has a frequency of 741 hz in air a wavelength of 0.47m what is the temperature of the air as soon as the below city of sound at 0°C is 235 m/s