A train travels 250 km westward from Carthage to Johnson City. The train arrives 2.5 hours after it left. What was the average velocity of the train between the two stations?

A) 2.5 km/h west

B) 25 km/h west

C) 100 km/h west

D) 250km/h west

You have a pair of cannon balls, each 100kg in mass, and a 'charge shuttling' device which can be used to remove electrons from one object and place them on another. One of the cannon balls is suspended from the ceiling with an insulating cord.

A source emits monochromatic light of wavelength 495 nm in air. when the light passes through a liquid, its wavelength reduces to 434 nm what is the liquid's index of refraction? a. 1.14 b. 1.49 c. 2.03 d. 1.26 e. 1.33

Which sentence uses punctuation correctly? a. As soon as he gets home from work Dad takes off his shoes. b. As if he were a wild beast little Michael growled at the strange baby-sitter. c. Whenever you are ready, we will go to the pool.

What is the base metric unit for measuring mass?

Suppose that you wanted to close a door by throwing a ball at the door. one ball will bounce off the door in a perfectly elastic collision while the other ball is made of clay and will stick to the door.

What is the total number of atoms in the following formula? CaBr2 4 3 2 1

Object A with a mass of 500 kilograms hits stationary object B with a mass of 920 kilograms. If the collision is elastic, what happens after the collision? A) Both object A and object B move forward but with different velocities.

A young man walks daily through a gridded city section to visit his girlfriend, who lives m blocks East and nblocks North of where the young man resides.

Aliens from planet Moby have three alleles for skin color: R (red) W (white) and B (Blue). If all of these alleles are codominant and aliens on planet moby can only inherit two alleles for a gene, what are the six possible genotypes for skin color

The difference between two numbers is 15. When twice the smaller number is subtracted from three times the larger number, the difference is 58. What is the larger number?