In a manufacturing process, a large, cylindrical roller is used to flatten material fed beneath it. The diameter of the roller is 6.00 m, and, while being driven into rotation around a fixed axis, its angular position is expressed as

Question:

In a manufacturing process, a large, cylindrical roller is used to flatten material fed beneath it. The diameter of the roller is 6.00 m, and, while being driven into rotation around a fixed axis, its angular position is expressed as  θ = 2.70t² − 0.900t3³

where θ is in radians and t is in seconds.  

(a) Find the maximum angular speed of the roller.

(b) What is the maximum tangential speed of a point on the rim of the roller?

(c) At what time t should the driving force be removed from the roller so that the roller does not reverse its direction of rotation?

(d) Through how many rotations has the roller turned between  t = 0 and the time found in part (c)?

a. 2.7rad/s

b. 8.1 m/s

c. 2 s

d. 3.6 rad

Explanation:

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

answer: he got 23

explanation: