A 2,000 kg railroad car is coasting on a track at a constant velocity of 20 m/s. As the car coasts under a loading ramp, a 500 kg bale of hay is dropped into it. What will be the velocity of the bale of hay inside the car?

A car traveling at 22.4 m/s skids to a stop in 2.55s determine the skidding distance of the car?

Microwaves are electromagnetic waves used in broadcasting and telecommunications. when do these waves increase in frequency?

A velocity vs time graph what is the acceleration of the object

This is the amount of energy required to change the state of a substance from liquid to gas. it starts with an h 18 characters

When students work in a chemistry lab, the location of which item would be the most important for each student to know? A. broom and dust pan, in case the student needs to sweep up broken glass B.

What is the weight of an with a mass of 32kg

The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. A beam of white light in this glass strikes the glass-air interface at a 25.50∘ angle of incidence and refracts out into the air.

The locations of the major pressure and wind systems on the earth:

Which statements correctly describe the properties of heat? Select all that apply. Heat is an essential component of life on Earth. Heat is energy that flows from one object to another. Heat flows from a hotter object to a colder one.

A book is sitting on a table at rest. Which of the following best describes the forces acting on the book? A.