The measure of how hot or cold something is compared to a freezing point is referred to as the
Ans: Temperature
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Equal charges, one at rest, the other having a velocity of 104 m/s, are released in a uniform magnetic field. Which charge has the largest force exerted on it by the magnetic field?
a. The charge that is at rest. b. The charge that is moving, if its velocity is parallel to the magnetic field direction when it is released. c. The charge that is moving if its velocity makes an angle of 45o with the direction of the magnetic field when it is released. d. The charge that is moving if its velocity is perpendicular to the magnetic field direction when it is released. e. All the charges above experience equal forces when released in the same magnetic field.
Consider a huge rotating cloud of particles in space that gravitate together to form an increasingly dense ball. As the cloud shrinks in size, it
A) rotates slower. B) rotates faster. C) rotates at the same rate.
When a material is found to have no definite volume and no definite shape, what is the phase of the material?
a. Gas b. Liquid c. Plasma d. Solid
From hottest to coolest, the order of the spectral types of stars is ________
A) OBAGFKM B) ABCDEFG C) ABFGKMO D) OBAFGKM E) OMKGFBA