In which of the following sentences is work used in the scientific sense of the word?

a scientist works on an experiment in the laboratory.*

b sam and rachel pushed, but they could do no work on the car.

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

What should the power status of a circuit be when measuring resistance with an ohmmeter?

Which is not true about oxygen-17 and oxygen-18?