A train starts from its station and it

velocity reaches 200m/s in 5

seconds. What is its acceleration?

a. 400m/s

b. 40m/s2

c. 4.5m/s2

d. Initial velocity is missing

How do waves behave differently to Earth's interior as they encounter the boundaries of different mediums?

What is the magnetic force on a stationary proton in a magnetic field of 0.50 tesla? for a proton, q = 1.6 * 10-19 coulombs

At the beach, describe where or when you would see a wavefronts. How are wave fronts useful to surfers?

A baseball is thrown a distance of 18m. What is its speed if it takes 0.5 seconds to cover the distance?

Which device would you use to most easily measure the illuminance on a surface

A hollow pipe is submerged in a stream of water so that the length of the pipe is parallel to the velocity of the water.

If the speed of an object decreases to one-half, what happens to its momentum? It doubles It remains the same It decreases to one half It decreases to one fourth

If a reaction has a rate constant of 3.7 x 10-3 s-1 at 25oC, and an activation energy of 43.6 kJ/mol, what will be the rate constant for this reaction at 75oC?

Two sounds are played for you. The first has a frequency of 196 Hz. The second has a frequency of 392 Hz. Which sound will be "higher" to your ear? A) The First B) The Second C) They will sound the same

When is an object that has been dropped from a great height through the air closest to vein in a free fall? At it's terminal velocity < - - this one?