Tina is waiting at the bus stop. She sees and hears an ambulance as it approaches and passes by her. Which two changes in the loudness of the siren does Tina hear?

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.