If the angular size of a spherical object is known, along with its distance from Earth, what third quantity can be determined?
A) the object's brightness
B) the object's mass
C) the baseline
D) the object's diameter
D
You might also like to view...
The potential energy of an 80 kg male and a 60 kg female standing together on a promontory at some height above the surrounding plane is the same
What will be an ideal response?
What is the mass of air in a room that measures 5.0 m × 8.0 m × 3.0 m? (The density of air is 1/800 that of water).
What will be an ideal response?
A string with a length of 1.20 m has a mass of 4.00 gm. The velocity of wave propagation along the string is 185 m/s. The tension of the stretched string is
A. 162 N. B. 145 N. C. 130 N. D. 114 N. E. 102 N.
A uniform rod (mass = 1.5 kg) is 2.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest in a horizontal position. What is the angular speed of the rod when the rod makes an angle of 30° with the horizontal? (The rotational inertia of the rod about the pin is 2.0 kg?m2).
A. 2.2 rad/s B. 3.6 rad/s C. 2.7 rad/s D. 3.1 rad/s E. 1.8 rad/s