Numerade

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Each second the Sun's mass Group of answer choices becomes smaller. grows larger. does not change.

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Question 2 1 pts What is significant about the geometric dilution process? Geometry is used in calculating the amount of ingredients needed to mix. The geometric dilution allows the active ingredient and the jelly to be mixed in larger portions. The geometric dilution process allows the active ingredient and the jelly to be mixed in smaller portions. This type of dilution allows for a certain amount of every ingredient to be mixed evenly every time forming a uniform compound.

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Please give me all solutions and answers. Thanks Problem 2. MOS Capacitor Consider the MOS capacitor below at T=300K with tox=200 nm. Note that the applied gate voltage causes band bending in Si such that EF=EFi at the surface x=0. Let ns=0. Q'ss=0 Ec 0.56 eV 0.29eV EF Xd a) Sketch the potential x inside the semiconductor as a function of position b) Sketch the electric field E(x) inside the oxide and semiconductor as a function of position c) Do equilibrium conditions prevail inside the semiconductor? Briefly explain d) Sketch the hole concentration inside the semiconductor as a function of position e) What is the hole concentration at the surface (x=0)? f) Doping concentration N=? g) Surface potential= (h) Gate voltage VG=? i) What is the potential drop (Vox) across the oxide? i) What is the capacitance of this MOS capacitor at this bias point shown in the figure Normalize to oxide capacitance=C/Cox.

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Evaluate the integral: (3si+15s2j+13k) ds Answer : i+ j+ k

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Let B = \{b_1, b_2\} and C = \{c_1, c_2\} be bases for $\mathbb{R}^2$. Find the change-of-coordinates matrix from B to C and the change-of-coordinates matrix from C to B. $b_1 = \begin{bmatrix} -1\\7 \end{bmatrix}$, $b_2 = \begin{bmatrix} 1\\-6 \end{bmatrix}$, $c_1 = \begin{bmatrix} 1\\2 \end{bmatrix}$, $c_2 = \begin{bmatrix} 1\\1 \end{bmatrix}$ Find the change-of-coordinates matrix from B to C. P = $ \boxed{} $ C$\to$B (Simplify your answer.)

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(iii) Water is entering a storage tank at a temperature T and flow rate Q, and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross section of the tank is A. The model that describes the dynamic variation of water temperature in the tank with time is given as: a) Qo(To-T) = A h dT/dt b) Q(To-T) = A h dt/dt

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2.( ) The figure below shows two currents $I_1 = 5$ A and $I_2 = 10$ A (Both $I_1$ and $I_2$ are in the same direction). At which point the magnetic field produced by $I_1$ and $I_2$ is biggest? Note that the currents and all points are on the line. 4% (A) A, (B) B, (C) C, (D) D, (E) E, (F) None (G) A and B, (H) B and D (I) A and E, (J) D and E. $I_1$ $I_2$ A B C D E x=0 x=2 cm x=3 cm x=4 cm x=6 cm

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(18) The Earth has a larger surface area than the Moon, so it should be hit more often. The surface area of the Moon is about 38 million km², while the surface area of the Earth is 510 million km². Based on their areas, how many more asteroids of size ?1 km would you expect to hit the Earth each year? What is the assumption you are making for this calculation? (19) Do you think it is reasonable to use craters on the Moon to estimate how often the Earth is hit? Can you think of any reason (other than the difference in surface area) that the Earth would be hit by meteorites more or less often than the Moon? (20) The impact of a 1 km diameter asteroid would likely end our civilization. Com- pare and comment on the frequency of asteroid impacts you calculated in the previous question to the age of human civilization. (21) There are not as many craters on Earth as on the Moon, and the only old craters on Earth are very large. Why is this? How does this make the Moon important for studying the history of the Solar System?

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5. Han Solo sits across from Greedo in the Mos Eisly Cantina. The bar tender, standing 10 meters away hears Solo say "I bet you have" and 2 microseconds later draws his blaster and shoots Greedo. He observes Greedo to draw his blaster 3 microseconds after Han says "I bet you have", shoots, misses, and dies. Is there a reference frame in which Greedo shot first? a. No because the space-time interval for both events is space-like b. No because the space-time interval for both events is time-like c. Yes because the space-time interval for both events is space-like d. Yes because the space-time interval for both events is time-like 6. Which of the following statements about Compton Scattering is false? a. Compton scattering refers to the elastic scattering of photons from nearly free electron in a crystal lattice. b. In Compton scattering it is impossible for a photon to transfer all of its momentum to an electron. c. The minimum angle through which a photon can scatter is 0 degrees and the maximum angle is 180 degrees. d. The Compton wavelength of the electron determines the uncertainty in wavelength of the scattered electrons.

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7) If the voltage across a 10mH inductor is given by: $v(t) = 2e^{-2t} + 5$ Find the current, assuming i(0) = 0 $t > 0$

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nancy s.