What is energy?

(Not the answer from google search.)

Which climate does Western California have

On top of Mount Everest, the temperature is - 19 ∘C in July. Being a physicist, you determine by how many degrees Celsius one needs to change the air temperature to double the average kinetic energy of its molecules.

A rocket is moving away from the solar system at a speed of 7.5 ✕ 103 m/s. It fires its engine, which ejects exhaust with a speed of 5.0 ✕ 103 m/s relative to the rocket. The mass of the rocket at this time is 6.0 ✕ 104 kg, and its acceleration is 4.

A 5-kg brick sliding on an ice covered pond has a kinetic energy of 16 Joules. a box of identical mass but half the speed is sliding on the same ice. How many Joules of kinetic energy does the brick have?

With what maximum precision can its position be ascertained? [hint:? p=m? v.]

An aircraft with the mass of 300000kg is flying at an altitude of 2000m with a speed of 100m/s what is the kinetic energy of the aircraft

What is the main idea behind the law of definite proportions?

A sign that weighs 400N is hanging from two cables that form angles of 24 degrees with the horizontal. What is the tension in each cable?

What temperature does nuclear fusion begin?

A 24-volt source is required to furnish 48 watts to a parallel circuit consisting of four resistors of equal value. What is the voltage drop across each resistor?