Atomic Nucleus: Write the standard nuclear notation for the following nuclei: hydrogen-2, sulfur-33, and lead-207.
What will be an ideal response?
H, 
S, 
Pb
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The flattened, rotating disk of gas and dust around the protosun, from which planets were believed to have formed, is called the
a. solar nebula. b. planetary nebula. c. condensation nebula. d. primordial nebula.
Two identical coils of wire are placed on a single horizontal wooden broom handle. The coils are separated by a few centimeters. We now run identical currents in the same direction through each coil. The coils experience
A. a repulsive magnetic force. B. a repulsive electrostatic force because both coils are identically charged. C. an attractive electrostatic force because one coil is negatively charged and the other positively charged. D. no forces because the currents are identical. E. an attractive magnetic force.
An astronaut is standing on the surface of a planetary satellite that has a radius of 1.74 × 106 m and a mass of 7.35 × 1022 kg
An experiment is planned where a projectile needs to be launched straight up from the surface. What must be the minimum initial speed of the projectile so it will reach a height of 2.55 × 106 m above this satellite's surface? (G = 6.67 × 10-11 N ? m2/kg2) What will be an ideal response?
If molecules in the sky scattered red-orange light strongly instead of blue light, sunsets would be
A) orange. B) yellow. C) green. D) blue.