Equipment used to measure force

Sound waves cannot carry energy through. A water B air C a mirror D a vacuum

Why do scientists believe that dark matter exists even though it cannot be seen?

harged particles usually have their own random movements. In a circuit, we are able to see those charged particles move in an organized, flowing manner in a single direction. What term describes this flowing motion?

Suppose you have two meter sticks, one made of steel and one made of invar (an alloy of iron and nickel), which are the same length (1.00 m) at 0°C. The coefficients of volume expansion for steel and invar are 3.6 * 10-5 / °C and 2.

The distance between the 1st and 2nd maxima is 0.3 cm when the screen is located 2 m away. If d = 0.4 mm, a) what is the wavelength? b) what is the size of central peak?

A ball with a mass of 3 kg moving at 5 m/s collides with a 9 kg ball at rest. After the collision, the impacting (3 kg) ball bounces back at a speed of 2.5 m/s. How fast does the 9 kg ball move and in what direction

Consider the four salts represented on the solubility curves displayed as line graphs. In all four cases the salts are which part of an aqueous solution?

A hot-air balloon of diameter 12 m rises vertically at a constant speed of 11 m/s. A passenger accidentally drops his camera from the railing of the basket when it is 19 m above the ground.

Describe the possible long term impact of a catastrophic event

Your lap feels warms because your laptop computer has been sitting on top it. This is an example of: A. conduction B. radiation C. convection Your lap feels warms because your laptop computer has been sitting on top it. This is an example of: A.