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if a system has j of heat added to it and the system does j of work


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1.Q1) (15 points) In the diagram below, M1 = 50 Kg, M2 = 20 Kg, mass and radius of the ...

g and 30 cm each, respectively. Both M1 and M2 rest on frictionless surfaces and the system starts from rest. (a) Draw the fbd for each of M1, M2 and the pulley. (b) Write the equations of motion for each of M1, M2 and the pulley. (c) Calculate the linear acceleration of the two masses, as well as the angular acceleration of the pulley. (d) Calculate the angular velocity of the pulley after M1 and M2 have been displaced linearly by 2 m. Q2) (10 points) A basketball is thrown with an initial speed v0 of 10.8 m/s at 400 above horizontal, and it enters the hoop from above. The ball is released at 2.00 m above the ground. The hoop is 3.05 m above the ground and 10.0 m away from the player. (a) Find the time at which the ball passes through the hoop. (b) Find the ball’s velocity (express in component form) just when it enters the hoop. (c) Find the ball’s maximum height. Q3) (5 Points) An object is thrown up from the top of a building of height of 400 m with an initial velocity of 20 m/s. (a) Find the position and the velocity of the object 5 s later. (b) With what velocity will it hit the ground? (c) At the same time the first object is thrown up, a second object is thrown up from the ground at 100 m/s. Will the two objects collide? If yes, calculate when and where,
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2.A study of a double intrusion detection system with two independent monitoring systems was conducted. If there is an​ intruder, ...

. If there is an​ intruder, system A sounds an alarm with probability 0.85 and system B sounds an alarm with probability 0.95. If there is no​ intruder, system A sounds an alarm with probability 0.20 and system B sounds an alarm with probability 0.15 . ​Now, assume that the probability of an intruder is 0.4 . If both systems sound an​ alarm, what is the probability that there is an​ intruder?
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3.It has been argued that of the two types of authoritarianism, left-wing has more in common with totalitarianism. To begin ...

litarianism. To begin with, provide a full description of left-wing authoritarianism. Then identify two traits of totalitarian syndrome and explain why you believe they support the assertion that left-wing authoritarianism is more similar to totalitarianism. There are different understandings as to the nature of representation in an indirect democracy. Name and describe each type. Finally, explain which of these you could expect to find in the parliamentary system and why. What, in the parliamentary context, is confidence? Why is it important, how might it be lost, and what happens if it is lost? The Canadian and the US political systems each contain a Senate. In one of the regimes the Senate is the dominant chamber, in the other it is not. Identify which is which and explain why. Provide a full description of the characteristics of a federal state. In your view, how would Plato and Aristotle classify this type of governmental system?
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4.I just need someone to look over my paper for anatomy and to just let me know what I need ...

t or add. I'll attach the questions, my rubric, as well as my answers I made. It would really help me out please. The questions: 1.) Choose two somatosensory receptors. Please include a description of each receptor, what they sense, and which part of the brain processes the information from the receptor. 2.) Provide a discussion of the thyroid gland. Include the following: Description of the thyroid gland's structure and location. Description of the cells of the thyroid gland. Description of the hormones secreted by the thyroid gland and their functions. Description of how thyroid hormones are controlled by hormones secreted by the hypothalamus and anterior pituitary gland. Description of how the feedback system works in the cases of high or low thyroid hormone levels. 3. Describe the cardiac cycle. Include descriptions of the 3 phases, the pressure changes in each of the heart's chambers, valves are open and closed, and blood flows during each step. My answer: 1.) Exteroceptor - receives external stimuli from outside of the body. An example, the skin (Thermoreceptors) detects the temperature of the outside area of the body. Interceptor - receives stimuli from inside of the body. An example would be blood pressure as well as blood oxygen levels. 2.) Thyroid Gland is located near the front lower part of the neck, beneath Adam's apple. Its structure includes Thyroid Epithelial that form follicles filled with colloid - a protein-rich reservoir of the materials needed for thyroid hormone production. The cells are responsible for releasing hormones that control metabolism (Energy levels). The thyroid gland releases triiodothyronine (T3) and thyroxine (T4). These hormones regulate weight, energy levels, internal temperature, skin, and growth. When the hypothalamus and pituitary function well, they can detect when hormone levels are low, which causes them to produce more TRH and TSH, which stimulates the thyroid to produce hormones. When the hormone levels exceed their limit, they then have less TRH and TSH, which results in reduced hormone production by the thyroid. Feedback is when a product feeds back into its initial cycle. The Feedback includes both positive and negative feedback. Positive Feedback is when a product provides back to increase production: an example, milk production by a mother for her baby. As the baby suckles, nerve messages from the nipple cause the pituitary gland to secrete prolactin. Prolactin, in turn, stimulates the mammary glands to produce milk, so the baby suckles more. Which causes more prolactin to be secreted and more milk to is made. Negative Feedback is when a product feeds back decreases production; it brings down show if they increase past their limit. It also controls insulin secretion by the pancreas. 3.) The Cardiac Cycle takes place from the beginning of a heartbeat to the next. It contains two periods: One is when the heart muscle relaxes and refills with blood, called diastole, following a time when it begins contraction and pumping of blood, systole. Once emptied, the heart then relaxes and expands to receive another inrush of blood coming back from the lungs and other areas of the body. The atrioventricular valves remain open while the semilunar valves are closed. During the middle part of the diastole, a small amount of blood flows into the ventricles. The blood flows from the veins and passes the atria fills the ventricles. The pressure in both ventricles is close to zero as a result.
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5. If a system has 35.5 J of heat added to it, and the system does 75.5 J of work ...

what is the change in the internal energy of the system, in J?
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6.2)Two books are accelerating to the right on a frictional surface and the coefficient of kinetic friction between the floor ...

ction between the floor and book is µk. Using the information given in the figure: (a) draw free body diagrams for both the books, and also for the combined system (of mass m1+m2), (b) find acceleration of the books along horizontal direction, and (c) find the magnitude and direction of the force exerted by the left book on the right book. 3.A car of mass 1500-kg enters a circular path at point P and leaves at point Q (see the figure) at constant speed of 5.0m/s, and the frictional force acting on its tires is 2500-N. a) how long it takes to reach point Q from point P, and b) what should be the minimum value of the coefficient of static friction between the tires and the road? 4)In an elevator which is accelerating downward at 2.5ms−2 , a 25-kg block hangs from a spring attached to the ceiling of the elevator. If spring gets stretched by 0.15m, find its spring constant.
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7.Carter and his children went into a bakery where they sell cupcakes for $3 each and cookies for $0.50 each. ...

0 each. Carter has $35 to spend and must buy a minimum of 15 cupcakes and cookies altogether. If xx represents the number of cupcakes purchased and yy represents the number of cookies purchased, write and solve a system of inequalities graphically and determine one possible solution. Inequality 1: Inequality 2: graph it
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8.Tanvi is collecting pledges for a walk-a-thon. Her mother has pledged a flat donation of $20, and her grandmother has ...

r grandmother has pledged $4 per mile. If Tanvi walks a certain distance, the two donors will end up owing the same amount. How much will each donor owe? Write a system of equations, graph them, and type the solution.
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

mathematicsalgebra Physics