What activates a convection current starting the flow of liquid

1.6*10^5J heat is required to raise the temperature of 10 kg of sand from 14°C to34°C, calculate the specific heat capacity of sand.

What is the process by which heat transfers from one particle of matter to another when the particles collide?

Which of the following is NOT one of the three components of a nucleotide? A.) carboxyl group B.) phosphate C.) 5-carbon sugar

An object in projectile motion will follow wich path

How does Newton's second law apply to an "Egg Drop" experiment?

In what way would a digital thermometer be preferable to those from a liquid-based thermometer? Digital thermometer readings are easier to use when performing calculations.

Why does the core of the sun contain more helium and less hydrogen than the surface of the sun?

What happens to a light ray passing through the center of a lens?

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0° above the table, and it lands on the magazine 0.0770s after leaving the table. Ignore air resistance.

A force of 5 N accelerates an object. The object's mass is 50 g. What is the acceleration of the object? (Formula: F=ma)