Magnetism results from
a. the movement of magnetic particles.
b. the movement of electric charge.
c. Earth's magnetic field.
d. the movement of magnetic charge.
b
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Uncertainty Principle Using Energy and Time: The excited state of a certain atom is 3.2 eV ± 0.21 eV. (h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)(a) What is the average lifetime of this state, in femtoseconds?(b) If the excited energy were doubled (to 6.4 eV ± 0.21 eV), how would the lifetime be affected?
What will be an ideal response?
A child pulls a 3.00-kg sled across level ground at constant velocity with a light rope that makes an angle 34.0° above horizontal
The tension in the rope is 5.00 N. Assuming the acceleration of gravity is 9.81 m/s2, what is the coefficient of friction between the sled and the ground? A) 0.156 B) 0.188 C) 0.0441 D) 0.0851 E) 0.103
A __________ has half integral spin
Fill in the blank(s) with correct word
An amount of heat is added to ice, raising its temperature from ?10°C to ?5°C. A larger amount of heat is added to the same mass of liquid water, raising its temperature from 15°C to 20°C. From these results, we conclude that:
A. overcoming the latent heat of fusion of ice requires an input of energy B. the latent heat of fusion of ice delivers some energy to the system C. the specific heat of ice is less than that of water D. the specific heat of ice is greater than that of water