A train with a mass of 25000 kg increases it's speed from 10 m/s to 25 m/s in 20 seconds. assume that the acceleration is constant and that you can neglect friction

what is the acceleration of the train

If element X has 96 protons, how many electrons does it have

The energy of a wave is directly proportional to the square of the ___. D. Amplitude c. crest b. wavelength a. frequency

A jackhammer is causing vibrations in a wall that is connected to the concrete being jackhammered. When the hammer is stopped, the wall ceases to vibrate. This type of vibration is: resonance forced vibration an example of beats none of the above

What is the difference between contact and action-at-a-distance forces? A. Action-at-a-distance forces are stronger than contact forces. B. Contact forces are stronger than action-at-a-distance forces. C.

In a Young's double-slit experiment the separation distance y between the second-order bright fringe and the central bright fringe on a flat screen is 0.0199 m, when the light has a wavelength of 425 nm.

an athlete whirls a 7.00 kg hammer tied to the end of a 1.3 m chain in a horizontal circle the hammer moves at the rate of 1.0 rev/s what is the centripetal acceleration of the hammer

Relaying a message from a membrane receptor to a molecule that performs a specific function within a cell occurs when

Ultrasound consists of sound at frequencies most people can hear?

Ali has less mass flying in a jet high above the earth than when she stands on the surface of the earth. True False

A passenger jet flies from one airport to another 1,333 miles away in 2.2 h. Find its average speed in the mks system of units.