An astronaut is being tested in a centrifuge. The centrifuge has a radius of 11.0 m and, in starting, rotates according to θ = 0.260t2, where t is in seconds and θ is in radians. When t = 2.40 s, what are the magnitudes of the astronaut's (a) angular velocity, (b) linear velocity, (c) tangential acceleration, and (d) radial acceleration?

a) 1.248 rad/s

b) 13.728 m/s

c) 0.52 rad/s^2

d) 17.132m/s^2

Explanation:

You have that the angles described by a astronaut is given by:

(a) To find the angular velocity of the astronaut you use the derivative og the angle respect to time:

Then, you evaluate for t=2.40 s:

(b) The linear velocity is calculated by using the following formula:

r: radius if the trajectory of the astronaut = 11.0m

You replace r and w and obtain:

(c) The tangential acceleration is:

(d) The radial acceleration is:

the total distance traveled by the car is

30km + 49km = 79 km .

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.