The preferred name of Cu2S is ______________
Fill in the blank(s) with correct word
copper(I) sulfide
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A fixed charge of 10 nC sits at the origin. A charge of 9nC is places at (4m, 3m).
a) Find the electric potential energy of the 9 n charge b) Find the work required to move the 9 n charge from its initial position to (-6m, 8m).
Do neutrinos have mass, and how do we know?
A) No, because they are observed to move at lightspeed. B) No, because we have observed that their paths remain straight as they pass through a magnetic field. C) Yes, because we have observed them to transmute from one of the three neutrino types to another. D) Yes, for both of the reasons listed in answers c and d. E) Yes, because we have observed them to move slower than lightspeed.
Galaxy A is 300 Mpc from Galaxy B. Hubble's Law says that V=H0 x D. About how fast is Galaxy A receding from the perspective of Galaxy B? Use a value of 75 km/s/Mpc for Hubble's constant.
A. 225 km/s B. 30000 km/s C. 75 km/s D. 22500 km/s E. 15000 km/s
A torque of 12 N ? m is applied to a solid, uniform disk of radius 0.50 m, causing the disk to accelerate at What is the mass of the disk?
A) 17 kg B) 13 kg C) 8.5 kg D) 4.3 kg