who described atoms as having a positive nucleus with electrons that have different energies at different distances from the nucleus.

The wave speed in a guitar string of length 57.5 cm is 266 m/s. you pluck the center of the string by pulling it up and letting go. pulses move in both directions and are reflected off the ends of the string.

What do you mean by peltier coefficient?

What is the normal frequency for humans

After a long day you go home in your friend's really fancy sports car which has a sun-roof on the top and a spoiler (a little wing-like surface which is above the trunk and the rear wheels.

9. A child standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down, the child continues moving forward at the original speed. This is an example of A. Newton's First Law of Motion B.

The power of a 1.5-volt alkaline cell varies with the number of hours of operation. A brand new D-cell can deliver as much as 13 A through a copper wire connected between terminals. Determine the power of a brand new D-cell.

You measure a watch's hour and minute hands to be 7.4 mm and 12.1 mm long, respectively. Part A In one day, by how much does the distance traveled by the tip of the minute hand exceed the distance traveled by the tip of the hour hand?

Describe the possible long term impact of a catastrophic event

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A transparent film laminated to a fabric is identified in the study material as a. stretch fabric. b. PVC. c. a skin. d. two-faced fabric