If different filters are used with an astronomical telescope, which of the following would give the best resolution?
a. red
b. yellow
c. green
d. purple
e. All yield the same resolution.
c
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At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of -0.40 rad/s2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What is the angular position of the wheel at t = 2.0 s?
a. 4.9 rad b. 4.7 rad c. 4.5 rad d. 4.3 rad e. 4.1 rad
About what is the smallest mass a newborn star can have?
A) 0.01 times the mass of the Sun B) 0.08 times the mass of the Sun C) 0.8 times the mass of the Sun D) the mass of the Sun E) twice the mass of the Sun
The current drawn by the heater is 10 amperes
Indicate whether the statement is true or false
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H
When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
a.
A.
b.
B.
c.
C.
d.
D.
e.
E.