What causes thunder?

a. static electricity in the air

b. the sudden heating of the air by a lightning bolt

c. the movement of raindrops and hail within the cloud

d. the formation of raindrops out of rapidly condensing water vapor?

An object in uniform circular motion must be changing its speed in order move in a circular path

Is a light bulb considered construction

A paper airplane is thrown to the north from the top of a cliff with a speed of 2 km/h. the paper airplane land 15 minutes (0.25 hours) later. how far from the cliff did the paper airplane land? A. 0.25 km to the North B. 0.5 km to the North C. 0.

You weigh 716 newtons on Earth. You travel to a newly discovered planet, Planet X. Planet X has a mass that is 3 times that of Earth, but it also has a radius that is twice as large. What is your new weight in newtons on planet x?

Which type of agent will enhance the properties of a neurotransmitter a) agonist b) antagonist c) catcher d) pitcher

Ari, a young patient who is regularly treated by a psychiatrist, feels compelled to carry out repetitive tasks the same way very frequently. If Ari does not conduct these tasks with extreme precision, he can feel extremely nervous and uncomfortable.

A friend says, "Stars produce energy by a fusion chain reaction of helium into hydrogen." Evaluate the validity of this statement. A) It is an valid statement. Stars produce energy by a fusion chain reaction of hydrogen into helium.

If the mass of a material is 42 grams and the volume of the material is 15 cm^3, what would the density of the material be? answer: Unit:

35. An object of mass m moving at speed v0 strikes an object of mass 2m which had been at rest. The first object bounces backward along its initial path at speed v0.

Calculate the change in the canister pressure when the outside temperature changes from 72 ∘f to 80 ∘ f.