Which of the following is not a unit of energy?

A) Calorie
B) joule
C) calorie
D) kilowatt
E) British thermal unit


D

Physics & Space Science

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A circular loop of radius 0.10 m is rotating in a uniform external magnetic field of 0.20 T. Find the magnetic flux through the loop due to the external field when the plane of the loop and the magnetic field vector are

(a) parallel. (b) perpendicular. (c) at an angle of 30° with each other.

Physics & Space Science

Five objects of mass m move at velocity

1 at a distance r from an axis of rotation perpendicular to the page through point A, as shown below. The one that has zero angular momentum about that axis is

a.
image

b.
image

c.
image

d.
image

e.
image

Physics & Space Science

Optical fibers work because of dispersion of light

Indicate whether the statement is true or false

Physics & Space Science

A uniform sphere of radius R and mass M rotates freely about a horizontal axis that is tangent to an equatorial plane of the sphere, as shown below. The rotational inertia of the sphere about this axis is ? ?

A.

.

B.
.

C.
.

D.
.

E.
.

Physics & Space Science