What is the requirement for a core to be used in an electromagnet?

Gneiss is a metamorphic rock that is formed when granite is subjected to extreme heat and pressure. This occurs in when: shallow seas evaporate mountains collide fossil sediments form layers magma cools and hardens underground

Heat flows from substances. HA

Compared with the peak wavelength given off by the sun, what is the peak wavelength given off by a hotter star? A.) shorter in wavelength and higher in energy B.) shorter in wavelength and lower in energy C.

If you push on a railroad boxcar with a force of 200 N and it doesn't move, you can conclude that

Which of these waves can not travel through the vacuum of space? a. microwaveb. radio wavec. light wave d. sound wave

What is the efficiency of the machine if the input is 263 J and the output is 142 J?

What are the benefits of the cool-down period following exercise?

What force keeps our atmosphere from floating out into space? heat water gravity outgassing

a subsrance has an atomic number of 80. How many protons and electrons do atoms of the substance have? what is the subsance?

Ideal meters problem. What internal resistance is ideal for a voltmeter? What internal resistance is ideal for an ammeter?