It is often possible to use the atomic masses when calculating the binding energy of a nucleus. The reason for this is
a. the electron masses do not cancel.
b. the electron masses cancel.
c. tables of nuclear masses are usually not available.
d. the mass of the electron can usually be neglected when compared to the mass of the neutron.
e. the atomic masses are the same as the nuclear masses.
b
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Pascal's Principle: The small piston of a hydraulic lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load of 15,000 N. Assume the pistons each have negligible weight.(a) Determine the force that must be applied to the small piston.(b) Determine the pressure applied to the fluid in the lift.
What will be an ideal response?
A certain fuse "blows" if the current in it exceeds 1.0 A, at which instant the fuse melts with a current density of 620 A/cm2. What is the diameter of the wire in the fuse?
A) 0.45 mm B) 0.63 mm C) 0.68 mm D) 0.91 mm
After a rock thrown straight up reaches the top of its path and then falls a short distance, its acceleration is (neglect air resistance)
A) greater than at the top of its path. B) less than at the top of its path. C) the same as at the top of its path.