An x-ray photon with wavelength 15.0 pm is scattered at 84.0? by an electron. What is the resulting kinetic energy of the electron?
A. 568 keV
B. 59.5 keV
C. 30.1 keV
D. 15.0 keV
E. 10.5 keV
E. 10.5 keV
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The acceleration of an object as a function of time is given by a(t) = (3.00 m/s3)t, where t is in seconds. If the object is at rest at time t = 0.00 s, what is the velocity of the object at time t = 6.00 s?
A) 18.0 m/s B) 54.0 m/s C) 0.00 m/s D) 15.0 m/s E) 108 m/s
In cloud formation, water vapor turns into water droplets which get bigger and bigger until it rains. This will cause the temperature of the air in the clouds to
a. get warmer. b. get cooler. c. will not affect the temperature of the air in the clouds. d. There is no air in clouds.
If a = 2.0 cm, b = 5.0 cm, and I = 20 A, what is the magnitude of the magnetic field at the point P?
a.
4.5 ?T
b.
7.5 ?T
c.
9.0 ?T
d.
6.0 ?T
e.
3.6 ?T
The force a magnetic field exerts on a current-carrying wire is maximum when the wire is oriented
A) parallel to the magnetic field. B) perpendicular to the magnetic field. C) either of these D) neither of these