Which would sound travel faster through: the ocean, the air, or a rock? Why?

When a 125-kg piece of equipment is hung from a steel wire of length 75 cm, it stretches the wire by 4.00 mm. If instead the wire had a length of 150 cm, but all else were the same, by what distance would the same equipment stretch the wire? a. 16.

Question 3 10 pts If the resistance in a circuit is 125.0 2 and the current is 25.0 A, what is the voltage? A. 5.0 V B. 3125 V C. 0.20 V D. 150 V

In digestion the molecules in your food break down to simpler chemical substances releasing energy as they do so this is a physical change true or false

Overlearning information hinders deep processing. T or F

When molecules are heated up with a flame, what type of heat transfer is occurring between flames and molecules? a Conduction b Convection c Radiation

A roller coaster car travels up and down the hills of its track. Neglecting friction, the sum of its kinetic and potential energy A. equals the sum of the thermal energy generated by friction during the ride. B.

In a transverse wave, if you increase of the wave you will get what kind of wavelength

What kind of system does not allow matter or energy to enter or exit? A. Connected B. Isolated C. Open D. Closed

Are the objects described here in static equilibrium, dynamic equilibrium, or not in equilibrium at all? a. A girder is lifted at constant speed by a crane. b. A girder is lowered by a crane. It is slowing down. c.

What kind of friction is shown between the skydiver and the air?