A train travels 57 kilometers in 3 hours, and then 87 kilometers in 2 hours. What is its average speed? km/hr

8) Compare the kinetic translational energy in each of the following scenarios. State which, if either, has more and calculate the scalar value. a) two elephants, both with mass 500 kg, one of which is travelling with velocity V = 1.

An atom gains an additional electron. What is the overall charge of the ion that is formed? elt

A traveler covers a distance of 413 miles in a time of 7 hours. What is the average speed for his trip?

What is the speed of a wave that has a wavelength of 0.4 m and a frequency of 10 Hz

Your shadow follows you everywhere. How is it formed? Is it always the same size or shape? Do you always have one shadow?

The greenhouse effect on which planet makes it the hottest planet in our solar system? A. Mars B. Mercury C. Venus D. Jupiter

A periodic wave with wavelength = 1 m has frequency f = 3 Hz. What is the wave's speed?

An example of Repression would be?

What kind of cell is in a dragonfly? A eukaryotic or prokaryotic?

A single-turn circular loop of wire of radius 65 mm lies in a plane perpendicular to a spatially uniform magnetic field. During a 0.10 s time interval, the magnitude of the field increases uniformly from 350 to 650 mT.