Jamie has a good chance of having freckles because his parents have freckles. which of the following statements explains this probability? jamie has more chromosomes from his father than from his mother. jamie could carry the gene for freckles from his parents. jamie and his father are exposed to similar climates. jamie and his mother eat the same kind of food.

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.