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1. Would the formation of 1r+ or 1r0 have occurred for a longer time from creation by thermal interactions in the early universe? What is the difference in mean temperatures for their thresholds of formation?
2. Calculate the temperature of the universe when photons can no longer disassociate deuterons. Use the mean value of the distribution.
3. Determine the temperature of the universe when it had cooled enough that photons no longer disassoci- ate the hydrogen atom. Use the mean value of the distribution.
Plot force (weight) versus ΔL. Fit a line for graph of force (weight) versus ΔL and find the slope which is the spring constant (k)
A patient swallows a radiopharmaceutical tagged with phosphorus-32 (3215P), a ? - emitter with a half-life of 14.3 days. What is the total energy deposited in the body during the 5.5 days
A car of mass 1620 kg is traveling without slipping on a flat, curved road with a radius of curvature of 33 m. What is the frictional force between the road and the tires
a block of mass 12.50 g on the end of spring undergoes simple harmonic motion with a frequency of 3.50 hz. if the
A lead bullet, traveling at 350m/s strikes a target and is broughtto rest. what would be the rise in temperature of the bullet
a certain airplane has a speed of 345.0 kmh and is diving at an angle of 30.0deg below the horizontal when the pilot
question1a 1.0-cm-tall object is 20 rm cm in front of a converging lens that has a 10 rm cm focal length. utilize ray
In an experiment to measure the index of refraction of human skin, it was found that if a beam of unpolarized light was hone on a skin sample from air at an incident angle of 54.7. what is the index of the refraction of this skin sample
A rectangular piece of sheet metal measures 45 centimeter by 75.0 cm. A 10 centimeter square is then cut from each corner. Evaluate what the volume of the container
The two objects with different mass (m1 = 5.0kg and m2 = 3.0 kg) in the Atwood's machineshown in the figure are released from rest, Determine the pulley's mass
The National Transportation Safety Board is testing the crashworthiness of a new car. Find the magnitude of average force that acts on car during the impact
At a point near the equator, the Earth's magnetic field is horizontal and points to the north. If an electron is moving vertically upward at this point, does the magnetic force acting on it point north, south, east, west, upward, or downward?
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