2. A sound wave in a steel rail has a frequency of 620 Hz and a wavelength of 10.5 m. What

is the speed of sound in steel?

1) What would the average acceleration be for a car at a stoplight that speeds up to 20 m/s in 10 seconds (in m/s^2) 2) Imagine that a car traveling at 100 m/s must slam on the brakes to avoid hitting a raccoon.

A mass of 2000 kg is raised 5.0m in 10 seconds what is the power output to raise the object

the car is moving on a straight road at a speed of 15m / s. The driver of the car starts overtaking with an acceleration of 2m / s². Determine how fast the car has reached after 6s from the start of overtaking.

What would happen if the moon was hit by an asteroid

Explain why the material surrounding a young star forms a disk

In our physical world, by far, the most abundance free charge in the universe is the electron, which has a negative charge. What do we mean, then, when we say that the surface of an object is positively charged?

You're going camping and are thinking of carrying 3 gallons of water. How much does the water weigh, in units of pounds?

A student is performing a double-slit experiment to determine the wavelength of a light source. She has measured the distance between dark bands and the distance between the slits and the screen.

If a substance cannot be broken down chemically into smaller substances it is A) An element B) a compound C) an atom D) a molecule

Describe the general characteristics of the nearest stars. (Size, luminosity, color, etc., do not include specific stars)