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Problem 1 $F_{net} = ma_x$ $f_t = \mu_k N$ $v_f^2 = v_o^2 + 2a_x (x - x_o)$ (a) Show that the velocity of the box when it reaches the bottom of the ramp, ignoring friction, is 7 m/s using Newton's 2<sup>nd</sup> Law. (b) Show that the velocity of the box when it reaches the bottom of the ramp, including kinetic friction, ($\mu_k = 0.5$) is 2.56 m/s using Newton's Second Law. +y Problem 2 Starting with Newton's 2<sup>nd</sup> Law, show that the tension in the string below is $T = \frac{mg}{2sin\theta}$ if $\theta_1 = \theta_2 = \theta$. +y +x Problem 3 $\tau_{net} = 0$ $\tau = rFsin\theta$ The muscles at the back of the head exert forces to keep the head upright. The mass of the head is 5.5 kg. (a) Show that the force exerted by the neck muscles is $F_M = 22$ N (this keeps the head upright). (b) Show that the force exerted by the joint is $F_J = 76$ N.

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QUESTION 9 Which of these transactions would be part of the operating section? cash payment for purchase of equipment sales of product, for cash land purchased, with note payable dividend payments to shareholders, paid in cash

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ANSWER SHEET Quarter 1 Module 3 Name Rona Mae A. Manangan $ \qquad $ Science 9 LESSON 2 Grade \& Section $ \qquad $ 9. Daisy 1. Show a cross between homozygous gumamela white (WW) $ x $ Heterozygous pink gumamela (Rw) \begin{tabular}{|l|l|l|} \hline M F & $ W(W) $ & $ W(W) $ \\ \hline$ R(W) $ & $ R W $ & $ R W $ \\ \hline$ R W $ & $ W_{W} $ & $ W_{W} $ \\ \hline \end{tabular} Answer: 1. What are the resulting offspring in the Punnett square? 2 RW and $ 2 W_{W} $ 2. What would be the genotypic and phenotypic ratios of the offspring?

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Describe three structures found in the earthworm by both appearance and function

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Use the approximation to find the approximate return to the fifth year of experience. What is the approximate return to the twentieth year of experience?

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Use a change of variables or the table to evaluate the following definite integral. \int_{-\frac{\pi}{4}}^{-\frac{\pi}{6}} \frac{-\sin x}{\cos^2 x} dx

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Scenario 21-1 The government is proposing switching from a progressive tax system in which families pay 15% of the first $50,000 earned, 25% of the next $50,000 earned, and 35% of any income over $100,000 to a tax system in which every family pays 20% of their income minus $20,000. Refer to Scenario 21-1. What would libertarians think of the tax two policies?

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Which of the following actors can exert influence over Members of Congress when it comes to casting their votes? Other Members of Congress Interest Groups The President All of the above

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Which of the following is considered to be a component of improvisational acting? sense of discovery, which comes from the unexpected strict adherence to the screenplay preprogrammed performance actors focusing on drama rather than on comedy directors playing less active roles than if working with prepared scripts Which of the following is considered to be a component of improvisational acting? O sense of discovery,which comes from the unexpected O strict adherence to the screenplay O preprogrammed performance O actors focusing on drama rather than on comedy O directors playing less active roles than if working with prepared scripts

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The ability to know that green means go and to know that a red burner means hot is examples of a) Discriminatory variance b) Signaling function of color c) Wave perception d) None of the above

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mark c.