If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following?
a. acceleration
b. length
c. time
d. area
c
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A pipe that is 120 cm long resonates to produce sound of wavelengths 480 cm, 160 cm, and 96 cm but does not resonate at any wavelengths longer than these. This pipe is
A) open at both ends. B) open at one end and closed at the other end. C) closed at both ends. D) We cannot tell because we do not know the frequency of the sound.
A 60.0-W light bulb radiates light uniformly in all different directions. What is the value of B at a distance of 0.700 m from the bulb?
A) 1.76 × 10-7 T B) 2.02 × 10-7 T C) 2.22 × 10-7 T D) 4.86 × 10-7 T E) None of the other answers is correct.
What is the mass density of argon gas at pressure 1.00 × 105 N/m2 and at temperature 300 K? The mean atomic mass of argon is 39.948 g/mol and the ideal gas constant is R = 8.314 J/mol•K = 0.0821 L ? atm/mol ? K
A) 1.00 kg/m3 B) 1.40 kg/m3 C) 1.80 kg/m3 D) 1.60 kg/m3 E) 1.20 kg/m3
A square and a circular loop with the same area lie in the xy-plane, where there is a uniform magnetic field pointing at some angle q with respect to the positive z-direction. Each loop carries the same current, in the same direction. Which magnetic torque is larger?
1.the torque on the square loop 2.the torque on the circular loop 3.the torques are the same 4.more information is needed