An object is released from rest at a distance h above the surface of a planet (mass = m, radius = r
A.
B.
C.
D.
E.
Answer: A
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If the 5th order minimum in the diffraction pattern is at 40°, what is the highest order minimum in the pattern?
A) 6 B) 11 C) 8 D) 7 E) 9
Tensile Stress and Strain: A large 75-kg lighting fixture can be hung from wires of identical size and shape made of aluminum, brass, or copper. The values of Young's modulus for these metals are 0.70 × 1011 Pa (aluminum), 0.91 × 1011 (brass), and 1.1 × 1011 (copper). Which wire would stretch the least distance?
A. aluminum B. brass C. copper D. They will all stretch the same distance.
_____ say that certain things cannot be created out of nothing or vanish into nothing
A) Conservation laws B) Laws of kinematics C) Laws of planetary motion D) Illuminance laws
What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm?
a. 460 b. 650 c. 420 d. 550 e. 1 480