Which of these waves require a medium to travel through?

Light wave

Microwave

Electromagnetic wave

Sound wave

A drag racer crosses the finish line at 132m/s what was the racers acceleration of his time was 3.94s

A car jack allows you to lift up a heavy car. The car jack works because A) you apply a greater force over a longer distance. B) you apply a smaller force over a longer distance. C) you apply a greater force over a shorter distance.

How many joules is one calorie?

Newton's law of universal gravitation states that every object in the universe attracts every other object. true or false.

The reflection of a sound wave from a wal is called

Determine the time needed for the load at b to attain a speed of 10 m/s, starting from rest.

A tea kettle is warmed on an electric stove. After a while, water vapor builds inside the kettle and causes a whistle in the lid to make a sound. How does this demonstrates the first law of thermodynamics?

A harmonic oscillator is described by the function x (t) 5 (0.200 m) cos (0.350t). Find the oscillator's (a) maximum velocity and (b) maximum acceleration. Find the oscillator's (c) position, (d) velocity, and (e) acceleration when t 5 2.00 s

A database that is flexible and easy to use was recently installed. the data is stored in rows and columns much like a spreadsheet. what type of database must have been installed?

What did johannes kepler contribute to the study of planets