Which medium could NOT transmit a mechanical wave? A. air B. rope C. vacuum D. metal bar

If the forces are equal and opposite why does the rocket ship move

a car is moving in a circular horizontal track of radius 10 m with a constant speed of 10m/s. A bob is suspended from the roof of carby a string of 1 m. The angle made by stringwith the vertical is?

What Electromagnetic has a shorter wavelength

Which of these is the most effective way for manny to cool down after kickboxing? start static stretches to increase his flexibility walk around to lower his heart rate sit and catch his breath to avoid light-headedness run one to three miles to

What characterizes a post-industrial society? a) The number of people living in urban areas is between 95 to 100 percent. b) There is a balance between the numbers of people engaged in agriculture and in manufacturing.

Which of these best describes a situation where science is used? A. choosing a career after graduation B. brushing teeth after having dinner C. ordering food in a restaurant by looking at a menu card D.

A receiver is in a jet flying alongside another jet that is emitting 2.0 x 106 Hz radio waves. If the jets fly at 268 m/s, what is the change in frequency detected at the receiver?

Dark matter has been detected by its

The catcher catches a. 5 kg baseball traveling at 40 m/s and the glove is pushed back 10 cm. What average force did the catcher put on the ball?

Describe the climate and name the climate zone at alaska; portland, oregon; and key west, florida.