Two objects, A and B, are released from rest in free space (no other masses are near). Object A has a greater mass than object B. They accelerate toward each other under the action of their mutual gravitational attraction.

a. On which object is the greater work done?

b. At the instant just before they hit, which object will have the momentum with the greatest magnitude?

c. At the instant just before they hit, which object will have the greater kinetic energy? Explain.

in all of the above could you explain how you got to the answer.

Thank you so much!

From the options listed below, choose ALL correct answers. (There may be more than one.)

In the hunt to identify HTT, the disease-causing gene for Huntington’s disease (HD), it was discovered that human haplotypes A and C were highly associated with HD.

The DNA sequence variants geneticists used to detect haplotypes A and C were:

a) Extra repeats of a CAG codon located in the HTT gene

b) Single-nucleotide polymorphisms located near the HTT gene

c) Causal for Huntington’s disease

d) Not causal for Huntington’s disease

e) Located in the same chromosome region as one another

The magnetic force acting on a moving electric charge is found to be independent of the sign of the charge.

True

False

We place the N magnetic pole of a magnet near the N magnetic pole of a second magnet. We find:

It was discovered that Electric Currents are the source of magnetic fields.

True

False

The Earth N and S magnetic poles are not stable. They are constantly moving in geologic time scales.

True

False

The Galvanometer is an instrument used to detect electric currents that takes advantage of the magnetic effects of currents.

True

False

1. Dr. M’s next door neighbors like to burn garbage in the front yard. They like to do this all day, every day. He prefers they not do it at all.

In order to solve this conflict using the Coase Theorem, does Dr. M need Sumner County to pass laws regulating or taxing the burning of trash? [Briefly summarize the Coase Theorem and its assumptions and apply its main conclusion to this situation.]

Why is the Coase Theorem more likely to be helpful in this case than in the case of air pollution caused by a large, coal fired power plant near a densely populated urban area?

ANSWER NUMBER 2 ONLY THANK YOU! :)


1) (a)There are 3 forms of Program Memory Addressing Modes: Direct, Relative and Indirect. Explain/Illustrate what happens to CS and IP registers if the JMP THERE instruction is stored at memory address 10000H (CS=1000H, IP=0000H) and the address of THERE is:
(A) 10020H
(B) 30000H
(b) Determine whether the JMP THERE instructions are SHORT, NEAR or FAR jump. Explain your answer.

2) (a) Illustrate the PUSH BX instruction if BX =1234H and SS:SP = 1000:0002. (b) Illustrate POP CX if it is the subsequent instruction that accessed the Stack memory.

When graphing nuclear binding energy per nucleon vs the number of nucleons in the nucleus, the significance of the peak near iron-56 is

Choose one:

a. if it was possible to make a atomic bomb from iron-56 it would release more energy than even a hydrogen bomb

b. the nuclei heavier than iron release energy when undergoing fission, whereas lighter nuclei can release energy in fusion reactions.

c. Spacecraft can be shielded with iron-56 to protect the astronauts from dangerous radiation

d. isotopes with even numbers of nucleons are the most stable

E. coli cells are growing in a medium containing lactose but no glucose. Indicate whether each of the following changes or conditions would increase, decrease, or not change the expression of the lac operon. For full credit, you must explain your answer. It may be helpful to draw a model depicting what is happening in each situation.

(a) Addition of a high concentration of glucose

(b) A mutation that prevents dissociation of the Lac repressor from the operator

(c) A mutation that completely inactivates ?-galactosidase

(d) A mutation that completely inactivates galactoside permease

(e) A mutation that prevents binding of CRP to its binding site near the lac promoter