TRUE OR FALSE Light can travel through materials that you cannot see through, like wood or aluminum foil.

 TRUE

Explanation:

(Example): If there was lightening outside, the lightening (light) could travel through a tree (that you cannot see through).

1. To determine the rotation rate, in rev/min, of the tub during the spin cycle is 103.5 rpm.

2. At this rotation rate, the tangential speed in m/s of a point on the tub wall is 25.88 m/s.

Given the following data:

Radius =

Acceleration due to gravity = 9.8

1. To determine the rotation rate, in rev/min, of the tub during the spin cycle:

Mathematically, the centripetal acceleration in rotational motion is given by the formula:

Substituting the given parameters into the formula, we have;

In rev/min:

1 rad/s = 9.5493 rpm

10.84 rad/s =

Rotation rate = 103.5 rpm.

2. To find the tangential speed in m/s of a point on the tub wall, at the above rotation rate:

Mathematically, tangential speed is given by the formula:

Tangential speed, V = 25.88 m/s

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