Recent experiments suggest that the lifetime of the proton is over 1033 years, more than what is predicted by the simplest grand unified theories
a. True
b. False
Indicate whether the statement is true or false
True
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Pressure in a Liquid: A container has a vertical tube, whose inner radius is 24.00 mm, connected to it at its side, as shown in the figure. An unknown liquid reaches level A in the container and level B in the tube-level A being 5.0 cm higher than level B. The liquid supports a 20-cm high column of oil, between levels B and C, whose density is 570 kg/m3. The mass of the oil is closest to
A. 210. B. 410. C. 620. D. 820. E. 1000.
To estimate the central temperature of the Sun, scientists
A) send probes to measure the temperature. B) use hot gas to create a small Sun in a laboratory. C) monitor changes in Earth's atmosphere. D) use computer models to predict interior conditions.
In addition to those of Groups 1A and 2A, three common elements that form only one ion each are
a. Sc, Ti, and Hg. b. Pb, Sn, and Cu. c. Al, Zn, and Ag. d. Ga, Ni, and Fe.
Euler’s equation integrated along a streamline results in Bernoulli’s equation provided the flow is:
(A) Incompressible, inviscid, steady, in an inertial reference frame (B) Constant density, steady, along a streamline, in an inertial reference frame (C) Incompressible, steady, along a streamline, in an inertial reference frame (D) Constant density, steady, along a streamline, inviscid, in an inertial reference frame