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 kinetic energy of the crate is 1/2 mv2
a. True
b. False
Indicate whether the statement is true or false
True
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Determine the PBR for the oxidation of nickel to form NiO that has a density of 7.45 g/cm3 .
What will be an ideal response?
The magnetic field of a plane-polarized electromagnetic wave moving in the z-direction is given by 
in SI units. What is the maximum E field?
A. 1000 V/m B. 180 V/m C. 81 V/m D. 360 V/m E. 0.40 V/m
The three most common cementing agents in a sedimentary rock are
A) silica, calcite, and hematite. B) calcite, silica, and iron oxide. C) silica, carbonate, and feldspar. D) silica, iron oxide, and sandstone.
How does an accretion disk around a neutron star differ from an accretion disk around a white dwarf?
A) The accretion disk around a neutron star is much hotter and emits higher-energy radiation. B) The accretion disk around a neutron star is made mostly of helium, while the accretion disk around a white dwarf is made mostly of hydrogen. C) The accretion disk around a neutron star is more likely to give birth to planets. D) The accretion disk around a neutron star always contains much more mass.