What do scientists study to figure out how long it takes the Sun to make one rotation on its axis?

A. flares

B. auroras

C. sunspots

D. prominences

Which most simplified form of the law of conservation of energy describes the motion of the block as it slides on the floor from the bottom of the ramp to the moment it stops?

What is an example of a high amplitude sound, and an example of a low amplitude sound?

1. Explain the importance of doing muscular strength and muscular endurance activities.

The amplitude of a sound wave determines it's pitch frequency loudness wavelength

What is the final velocity of the combined bumper cars A 225 kg red bumper car is moving at 3.0 m/s. It hits a stationary 180 kg blue bumper car. The red and blue bumper cars combine and hit a stationary green bumper car of mass 150 kg.

The period of a 440 Hertz sound wave is __ seconds. 1/440 1/220 220 440

Match the term to the correct description. ~A type of circuit where part of the loop is broken. ~The flow of electrons. ~A loop that creates a pathway for electricity to follow. ~A type of circuit with only one path for the electricity to follow.

What is the mass of an object that is accelerating at 10 m/s^2 when a force of 2,386 N is exerted

According to the U. S. Green Building Council, what percentage of the world's energy use and greenhouse gas emissions can be attributed to buildings?

Magnets are often fitted to the doors of refrigerators and cupboards WHY?