Atoms in crystals are typically separated by distances of 0.10 nm. What KE must an electron have, in eV, in order to have a wavelength of 0.10 nm?
What will be an ideal response?
1.2 × 104 eV
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In the early universe, the electromagnetic and strong nuclear forces were joined together to make the electrostrong force
a. True b. False Indicate whether the statement is true or false
When a wool blanket is used to keep warm, what is the primary insulating material?
a. wool b. air c. the trim around the edge of the blanket d. a thin layer of aluminum foil (usually not apparent) inside the blanket
The graph shows the force on an object as it moves a distance x. What is the work done by the force when the object moves from 0.0 m to 6.0 m?
A. 14 J
B. 12 J
C. 10 J
D. 8.0 J
E. 6.0 J
A double loop of wire (making 2 turns) is in the x-y plane centered at the origin. A uniform magnetic field is increasing at a constant rate in the positive z-direction. Viewed from the positive z-axis, in which direction is the induced magnetic field in the loop?
a. in the positive z-direction b. in the negative z-direction c. There is no induced field because of the double loop. d. There is no induced field because the rate of change of the magnetic field is constant.