Two objects are thrown vertically upwards simultaneously, one on the surface of Earth and the other on the surface of the Moon. Both have an initial velocity of 20 m/s
Both objects will take the same time to reach the highest point of their trajectory. Indicate whether the statement is true or false
FALSE
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Which of the following does not have a major effect in shaping planetary surfaces?
A) impact cratering B) volcanism C) tectonics D) erosion E) magnetism
If the stable nuclei are plotted with neutron number vs. proton number, the curve formed by the stable nuclei does not follow the line N = Z. This is predicted by examining how the binding energy is influenced by:
a. the volume of the nucleus. c. the proton-neutron mass difference. b. the size of the nuclear surface. d. the Coulomb repulsion.
Order these cosmological events in order from earliest to latest.
A) formation of the first atomic nuclei, formation of the first neutral atoms, formation of the first subatomic particles, formation of the first galaxies B) formation of the first subatomic particles, formation of the first atomic nuclei, formation of the first neutral atoms, formation of the first galaxies C) formation of the first galaxies, formation of the first neutral atoms, formation of the first atomic nuclei, formation of the first subatomic particles D) formation of the first subatomic particles, formation of the first neutral atoms, formation of the first atomic nuclei, formation of the first galaxies E) formation of the first neutral atoms, formation of the first subatomic particles, formation of the first atomic nuclei, formation of the first galaxies F) formation of the first atomic nuclei, formation of the first subatomic particles, formation of the first neutral atoms, formation of the first galaxies
A 20-?F capacitor has a charge of 60 ?C. How much energy is stored in this capacitor?
A) 70 ?J B) 80 ?J C) 90 ?J D) 100 ?J E) 110 ?J