A mass of 0.40 kg, attached to a spring with a spring constant of 80 N/m, is set into simple harmonic motion. What is the magnitude of the acceleration of the mass when at its maximum displacement of 0.050 m from the equilibrium position?
a. zero
c. 10 m/s2
b. 5 m/s2
d. 20 m/s2
C
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Wave Characteristics: How much time does it take a beam of light to travel 2.9 km through space? (c = 3.0 × 108 m/s)
A. 9.7 s B. 9.7 ms C. 9.7 ?s D. 9.7 ns E. 9.7 ps
A large massive rock is in contact with the earth. Draw a force diagram for the rock and the earth. Which of the following statements is true?
A. The gravitational force on the rock due to the earth and the gravitational force on the earth due to the rock are interaction partners. B. The gravitational force on the rock due to the earth and the contact force on the earth due to the rock are interaction partners. C. The contact force on the earth due to the rock and the gravitational force on the earth due to the rock are interaction partners. D. The gravitational force on the earth due to the rock and the contact force on the earth due to the rock are interaction partners.
Batholiths are massive plutons formed from the intrusion of
A) andesitic magma. B) granitic magma. C) basaltic magma. D) all of these
Radio telescopes have poor resolving power because:
A) they have the smallest diameters. B) they cannot measure wavelengths larger than 102 m. C) radio waves have long wavelengths. D) radio waves have small diffraction fringes.