What is hypothesized to have caused a sudden inflation of the early universe?
A) the annihilation of matter and antimatter
B) the separation of the electromagnetic and weak forces
C) the "freezing out" of the strong force from the GUT force
D) the energy released in the fusion of protons and neutrons to produce helium
E) giant quantum fluctuations
C) the "freezing out" of the strong force from the GUT force
You might also like to view...
In the vicinity of what frequency does an object with a temperature of 1000 K radiate the largest amount of power? (c = 3.00 × 108 m/s,
Wien displacement law constant equals 2.90 × 10-3 m ? K, ? = 5.670 × 10-8 W/m2 ? K4) A) 1.0 × 1014 Hz B) 8.0 × 1014 Hz C) 2.3 × 1014 Hz D) 6.7 × 1014 Hz E) 4.1 × 1014 Hz
A car has a mass of 930 kg has wheels with a radius of 35 cm, and the distance between the axles is 3.1 m. The coefficient of static friction between the tires and the road is 0.52
It is equipped with anti-lock brakes so that the tires do not slide when it is braking. If the weight of the car is supported equally by the four tires, what is the total torque on the tires exerted by the forces between the tires and the horizontal road when there is maximum braking, i.e. when the tires are about to slip? A) 1.2 × 102 N m B) 1.7 × 103 N m C) 1.2 × 104 N m D) 1.6 × 102 N m E) 1.4 × 104 N m
The heliocentric model was actually first proposed by
A) Aristotle. B) Archimedes. C) Aristarchus. D) Alexander the Great. E) Hipparchus.
A startled deer runs 520 m at 20.0° north of east for half a minute, then turns and runs 380 m at 55.0° north of west for 15.0 seconds and stops. What is the average velocity of the deer during this time?
a. 14.3 m/s b. 12.4 m/s c. 20.0 m/s d. 36.1 m/s