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steven coleman

steven c.

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A geosynchronous Earth satellite is one that has an orbital period of precisely 1 day. Such orbits are useful for communication and weather observation because the satellite remains above the same point on Earth (provided it orbits in the equatorial plane in the same direction as Earth's rotation). (a) Calculate the distance of such a satellite above the Earth given that for the Moon its average orbital radius is 3.84\times 10 5 km and period is 27.3 days and the radius of the Earth R Earth is 6.37\times 10 3 km . (b) Calculate the gain in the kinetic energy and gravitational potential energy per unit mass of the satellite from its launch on the equator to the geosynchronous orbit, with respect to the center of the Earth. Express your answers in MJ kg −1 . [Hint: The gravitational potential energy per unit mass at a distance r from the center of the Earth is given by −GM Earth /r for r>=R Earth. Notice the negative sign.] [Note: It is possible to avoid using G Earth by considering the gravitational acceleration on the Earth's surface. Nevertheless, feel free to look up the values of the gravitational constant G and the mass of the Earth M Earth .]

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Substitution and elimination REACTIONS. Directions: Add missing reagents, reactant, or major isolated organic product for each reaction per the mechanism noted. (4 points each, 24 points total) Br 17. 18. 19. 20. 21. KOtBu in DMSO E2 NaOMe in MeOH -Br E2 I H2O SN1 NaCN, DMF SN2 ? Na in CH3CN (sodium benzoate) SN2 NaOH E2 1,2-dimethylcyclopentene 22.

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Consider the buffer composed of the aqueous solutions of \( \mathrm{NH}_{3} \) and \( \mathrm{NH}_{4} \mathrm{Cl} \), write the chemical equations for the reactions of the buffer components when a strong acid and a strong base is added.

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According to Erickson, the development of autonomy depended on quality of care giving quantity of care giving how controlling parents are genetic factors

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In addition to a medical doctor, provide an example of individuals who help families cope and understand chronic illnesses in children.

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In the 'delayed alarm sensor circuit', VB = 19 V, C = 9.5 mF, R = 0.8 KOhm. The alarm is set to go off when the voltage across the switch exceeds certain value called threshold voltage. To allow a time to disarm the alarm, the circuit is designed so that there is a delay between the time the circuit is powered on and the time when alarm goes off. If the required delay is 9.5 s, what should be the threshold voltage of switch S2 set to? (unit:V)

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SECTION TWO: INTRODUCTION TO PARTIAL DIFFERENTIATION OF MULTIVARIATE FUNCTIONS. For each of the given functions, find $f_x$ and $f_y$. Question (1) $f(x,y) = 4x + 9y$ Question (2): Question (3): $f(x, y) = 3x^2y + 9x - 11y + 8x^4y^2$ Question (4): $f(x,y) = \sqrt{xy}$ $f(x,y) = 9\sqrt{x} + 7\sqrt[4]{y^3}$ Question (5): $f(x,y) = 15x^4y - 45x^3y^{10} + 1$

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An electron moves along the x-axis at a velocity of 8 × 10^6 m/s. The electron is inside a magnetic field of 0.025 T whose direction is at an angle of 60° with respect to the x-axis, on the xy-plane. Calculate the magnitude of the magnetic force, the magnetic force vector, and acceleration of the electron.

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Chapter 7 Homework Question 2, 7.4.9 HW Score: 10%, 1 of 10 points Points: 0 of 1 Save For a population that is left skewed with a mean of 25 and a standard deviation equal to 19, determine the probability of observing a sample mean of 24 or more from a sample of size 35. Click here to view page 1 of the Cumulative Standardized Normal Table. Click here to view page 2 of the Cumulative Standardized Normal Table. What is the probability of observing a sample mean of 24 or more from a sample of size 35? P(\bar{x} \ge 24) = (Round to four decimal places as needed.) View an example Get more help Clear all Check answer Next

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Score: Sorry, you did none of the 4 parts correctly. Answer(s): (Your response(s) are shown below, followed by the correct answer(s).) $R_2$ $I_0$ $a$ $b$ $V_0$ $+$ $R_3$ $R_4$ $R_1$ [8pts] Consider the network above, with $I_0 = 3A$, $V_0 = 36V$, $R_1 = 5\Omega$, $R_2 = 2\Omega$, $R_3 = 8\Omega$, and $R_4 = 4\Omega$. a. What are components of the Thevenin equivalent circuit between nodes a and b? $V_{th} = 9.82 V$ $R_{th} = 10.7 \Omega$ b. What are components of the Norton equivalent circuit between nodes a and b? $I_n = 0.915 A$ $R_n = 10.7 \Omega$

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