Choose the best definition for velocity

1. How fast something is going

2. Speed in a certain direction

3. Which direction something is going

4. Something speeding up

When a body is moving with a uniform velocity, the acceleration is ___?

Out of aluminum, copper, steel, and glass. Which material do you think will be the best thermal conductor?

A pair of eyeglass frames is made of epoxy plastic. At room temperature (20.0°C), the frames have circular lens holes 2.50 cm in radius. To what temperature must the frames be heated if lenses 2.

Why does biodiversity contribute to a habitats sustainability

Why does a glass rod become positively charged when it is rubbed with a silk cloth?

Why is coal costly to produce? 1. coal is found deep underground. 2. Coal is expensive to make 3. Coal is only found in certain places on earth. 4. Coal is difficult to make in the lab.

Karen has a mass of 51.9 kg as she rides the up escalator at Woodley Park Station of the Washington D. C. Metro. Karen rode a distance of 63.1 m, the longest escalator in the free world. The acceleration of gravity is 9.8 m/s 2.

What is the current in a 160V circuit if the resistance is 2Ω?

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 ... ?