An object of mass 10.0 kg is initially at rest. A 100 N force causes it to move horizontally through a distance of 6.00 m. What is the change in the kinetic energy of this object?
A)
0 J
B)
200 J
C)
60.0 J
D)
600 J
E)
1000 J
D
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Thin Lenses: An object is placed 60 cm from a convex lens with a focal length of magnitude 10 cm. What is the magnification?
A. -0.10 B. 0.10 C. 0.15 D. 0.20 E. -0.20
A shear force of 400 N is applied to one face of an aluminum cube with sides of 30 cm. What is the resulting relative displacement? (The shear modulus for aluminum is 2.5 × 1010 N/m2)
A) 1.9 × 10-8 m B) 2.6 × 10-8 m C) 4.4 × 10-8 m D) 5.3 × 10-8 m E) 8.2 × 10-8 m
A photon that is emitted during a transition in hydrogen from the n = 27 state to the n = 2 state is in which of the following series?
A. Lyman B. Balmer C. Paschen D. Brackett E. All of these choices are correct.
Polarization: For a beam of light, the direction of polarization is defined as
A. the beam's direction of travel. B. the direction of the electric field's vibration. C. the direction of the magnetic field's vibration. D. the direction that is perpendicular to both the electric and magnetic field vectors.