If a bottlel filled with water 25c and freezes at - 5c the waters tempreture drop what is the sign of the systems q, w,ΔE

How does the movement of electrons create an electric charge?

A ceiling fan draws a current of 0.625 A and has a voltage of 120 V. The resistance of the ceiling fan, to the nearest whole number, is Ω.

The work done by an engine equals one-fourth the energy it absorbs from a reservoir. True or False

Which of the following is true regarding the Earth's mantle? A It is made mostly of liquid metal that allows it to flow. B Its material moves due to convection currents. C It is the densest of all of Earth's layers.

Find the energy in joules required to lift a 2,500g object a distance of 500cm

A thermometer is placed in water in order to measure the water's temperature. What would cause the liquid in the thermometer to drop? A. The molecules in the water spread apart. B. The molecules in the thermometer's liquid spread apart. C.

The amount of energy carried by a wave is proportional to the square of the wave's A. frequency B. amplitude C. wavelength D. period ... ?

The pressure at the bottom of a jug filled with water does not depend on

at what other angle will a thrown ball go the same distance as one thrown at an angle of 75 degrees?

A record player turntable initially rotating at 3313 rev/min is braked to a stop at a constant rotational acceleration. The turntable has a rotational inertia of 0.031kg? m2.