The Sun subtends an angle of 0.00928 radians at the surface of the earth. Its distance from Earth is 1.50 x 1011 m. What is the diameter of the Sun?
What will be an ideal response?
1.39 × 109 m
Physics & Space Science
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Determine the Schmidt number for benzene evaporating into air at 25ºC.
What will be an ideal response?
Physics & Space Science
The figure below shows a planet traveling in a clockwise direction on an elliptical path around a star located at one focus of the ellipse. When the planet is at point A,
a.
its speed is constant.
b.
its speed is increasing.
c.
its speed is decreasing.
d.
its speed is a maximum.
e.
its speed is a minimum.
Physics & Space Science
Which portion of the electromagnetic spectrum is used to identify fluorescent minerals?
a. ultraviolet light b. X rays c. infrared waves d. gamma rays
Physics & Space Science
A quantity that is measured in ohms is
a. voltage. b. current. c. resistance. d. electric field. e. critical temperature.
Physics & Space Science