Moh's hardness scale is a relative measure of which physical property of minerals?
What will be an ideal response?
hardness
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Newton's modification of Kepler's Third Law lets us measure the mass of the Sun
Indicate whether the statement is true or false
The pitch of a musical sound is most related to
A) wavelength. B) frequency. C) speed. D) amplitude. E) all of the above
Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The potential energy of the crate is mgd
a. True b. False Indicate whether the statement is true or false
A metal blade spins at a constant rate of 5.0 revolutions per second about a pivot through one end of the blade. This rotation occurs in a region where the component of the earth's magnetic field perpendicular to the blade is 30 ?T. If the blade is 60 cm in length, what is the magnitude of the potential difference between its ends?
a. 0.24 mV b. 0.20 mV c. 0.17 mV d. 0.27 mV e. 0.34 mV