The nebular theory also predicts that the cloud should heat up as it collapses. what physical law explains why it heats up?

Wo particles are separated by a certain distance. the force of gravitational interaction between them is f0. now the separation between the particles is tripled. find the new force of gravitational interaction f1.

A nebula is a concentrated area of gas and dust. How does this relate to the formation of stars within galaxies?

True or false structuralism was an early theoretical approach to the study of psychology which attempted to explore the functions of mental activity

What is the mass defect of lithium-7? Assume the following: Atomic number of lithium = 3 Atomic mass of lithium = 7.016003 atomic mass units. Mass of 1 proton = 1.007276 atomic mass units. Mass of 1 neutron = 1.008665 atomic mass units

A 0.40kg soccer ball approaches a player horizontally with a velocity of 18m/s north. the player strikes the ball and causes it to move in the opposite direction with a velocity of 22m/s. what impulse was delivered to the ball by the player?

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.