Suppose a runner completes one lap around a 400-m track in a time of 50 s. Calculate the average speed of the runner.

What does KCI stand for

Which of Newton's laws accounts for the following statement? "A force cannot act alone." first law second law third law

Chegg A late passenger, sprinting at 8.00 m/s, is 30.0 m away from the rear end of a train when the train starts from rest with a constant acceleration of 1.00 m/s2.

The frequency of a light wave in air is 5.3 * 10¹⁴ Hz. Is the fre-quency of this wave higher, lower, or the same after the light enters a piece of glass?

If a crest and a trough in a ripple tank meet, what happens?

On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3, length 78.4 cm and diameter 2.30 cm from a storage room to a machinist. Calculate the weight of the rod, w. Assume the free-fall acceleration is g

All ions are atoms with a what? A. positive charge B. Negative charge C. Charge D. Neutral charge

What current flows when a 35 v potential difference is imposed across a 1.4 kω resistor?

What particles are found in the area surrounding the necleus

A 10 kg mass is lifted to a height of 2 m. What is the potential energy of the object