Transverse waves are traveling on a 1.00-m long piano string at 500 m/s. If the points of zero vibration occur at one-half wavelength (where the string is fastened at both ends), find the frequency of vibration
a. 250 Hz
b. 500 Hz
c. 1 000 Hz
d. 2 000 Hz
e. 2 500 Hz
a
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A force of 15 N toward the WEST is applied to a 4.0 kg box. Another force of 42 N toward the EAST is also applied to the 4.0 kg box. The net force on the 4.0 kg box is
A. 57 N toward the WEST. B. 27 N toward the EAST. C. 36 N toward the WEST. D. 36 N toward the EAST. E. 17 N toward the WEST.
How large is the estimated mass of a neutrino?
A) equal to the mass of an electron B) equal to the mass of a proton C) equal to the mass of a neutron D) less than the mass of an electron E) zero
The internal structure of the Earth is investigated mainly by
A) studying seismic waves generated from earthquakes B) deep drilling C) remote sensing satellites D) measuring changes in the Earth's magnetic field
The angular velocity of a 755-g wheel 15.0 cm in diameter is given by the equation ?(t) = (2.00 rad/s2)t + (1.00 rad/s4)t3
(a) Through how many radians does the wheel turn during the first 2.00 s of its motion? (b) What is the angular acceleration (in rad/s2) of the wheel at the end of the first 2.00 s of its motion? What will be an ideal response?