What occurrence defines the end of the protostar phase of a star's life and the start of the main-sequence phase?

Tempat terjadinya awan, salju, angin dan hujan

You are playing a game of soccer. Describe as many actionreaction pairs in this situation as you can think of.

What are the five practices in scientific inquiry

How long will it take the cyclist to travel 400 meter?

A small glass bead has been charged to + 30 nC. A tiny ball bearing 1.0 cm above the bead feels a 1.8*10^-2 N downward electric force. What is the charge on the ball bearing?

What's the definition of: • cellular respiration • photosynthesis

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above

You have an open air column of length 1.40 m in air at 24.2 °C. What is the frequency of the third harmonic?

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

If you had a positive 8 score on the sit-an-reach test you