What has a definite ratio of components

I want to know the formula of the fermi velocity

If the average pitcher is releasing the ball from a height of 1.8 m above the ground, and the pitcher's mound is 0.

What determines if an object is moving?

Imagine that you are baking brownies for a bake sale at school. Which of the following pans is least likely to cause you to burn the bottoms of your brownies? a glass pan, an aluminum pan, a cast iron pan or a copper pan

The boundary between cold and warm air masses is called

Two atoms that are isotopes of one another must have a different number of what? electrons neutrons protons all particles

How can you use the newton's second law to find force?

Define and describe a mixture using examples.

Which have a positive charge? neutrons atoms protons electrons

Now that we know the velocity of the cart before the collision is 1.80m/s, let's use this to determine the linear momentum and kinetic energy of the disk-cart system before the collision. The mass of the cart is 23.5kg. The mass of the disk is 11.