Physics, 28.07.2020 17:01, brittany7436

A dentist using a dental drill brings it from rest to maximum operating speed of 391,000 rpm in 2.8 s. Assume that the drill accelerates at a constant rate during this time. (a) What is the angular acceleration of the drill in rev/s2?
rev/s2
(b) Find the number of revolutions the drill bit makes during the 2.8 s time interval.
rev

Answers: 2

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 23:20, stormserena

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Answers: 3

continue

Physics, 22.06.2019 04:50, od3008

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

Answers: 3

continue

Physics, 22.06.2019 10:00, lulu8167

What is the temperature in degrees celsius of a substance with a tempature of 49k

Answers: 2

continue

Physics, 22.06.2019 11:00, chaycebell6662

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?

Answers: 3

continue

Do you know the correct answer?

A dentist using a dental drill brings it from rest to maximum operating speed of 391,000 rpm in 2.8...