Convection currents not only in the Earth's core but in what?

A. Only liquids

B. When a dense substance is warmer than a less dense substance

C. In both liquids and gases

D. Weakly in solids

A positive charge of 3.2 x 10 - 5 C is located 0.85 m away from another positive charge of 7.4 x 10 - 6 C. What is the electric force between the two charges?

Dr. Perez is part of a team of researchers who are working on designing and building a probe to study solar flares. What condition must the probe meet? It must be able to travel over 300,000,000 km to reach the Sun.

A pipe is subjected to a tension force of P = 50.00 kN. The pipe outside diameter is 32.00 mm, the wall thickness is 6.00 mm, and the elastic modulus is E = 150.00 GPa. Determine the normal strain in the pipe. Express the strain in mm/mm.

Which type of bond forms when two or more atoms share electrons equal covalent ionic hydrogen

What is the atomic weight and charge of the radioactive particle that was emitted?

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? a. W1 is zero, and W2 is positiveb. W1 = - W2c.

The amplitude of a sound is the Group of answer choices frequency of the sound. magnitude of displacement of a sound pressure wave. psychological aspect of sound related to timbre. amount of sound energy falling on a unit area.

Air at 38°C and 97% relative humidity is to be cooled to 18°C and fed into a plant area at a rate of 510 m/min. a. Calculate the rate (kg/min) at which water condenses. b.

a 7.26kg bowling ball (16 pounds) is at rest at the end of the bowling lane. : how long did you push the ball in this situation

Which is an example of speed? Cindy biked westward at 30 km/h. A rock is to the left of a flowerpot. A dog runs an average of 8 mph. Leo lives 2 miles north of Andre.