Energy waves moving through the air

A person driving a car at 15 m/s realizes they are late for work and presses the gas pedal for 3 seconds until they are moving at 21 m/s. What is the acceleration of the car?

The internal kinetic energy of molecules produces ... ?

Electromagnetic waves A. All have the same wavelength B. Do not carry energy C. Can travel through empty space D. All have the same frequency

Which of the following was an effect of the fall of the Gupta empire? A. The Chola took over all of India. B. India became more isolated. C. India united under a new empire. D. India divided into smaller kingdoms.

What is the exposure of shakes double 18"

A panpipe is made of five pipes. The longest pipe is 25 centimeters long and the shortest is 5 centimeters long. Which of these pipe produces the highest-frequency sound and why?

Model rocket A is launched at an angle of 70° above the x axis, with an initial velocity of 40 m/s. An identical rocket B is launched under the same conditions at an angle of 90° above the x axis, also with an initial velocity of 40 m/s.

Why is it that when you throw a Frisbee, it flies better when it is normally thrown and not upside down?

Four blocks of weights are required using which any body whose weight is between 1kg and 40 kg can be weighed. Find the four weights

Use the graph to determine the instantaneous speed at 2 seconds. m/s What is the average speed over the entire trip? m/s