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A supertanker with a total displacement (weight) of $155(10^3)$ long tons (one long ton equals 2240 lb) is moving forward at a speed of 2.3 knots when the engines are reversed to produce a rearward propeller thrust of 74000 lb. How long would it take the tanker to acquire a speed of 2.3 knots in the reverse direction? Can you justify neglecting the impulse of water resistance of the hull? (Recall 1 knot = 1.151 mi/hr.) Answer: t = s eTextbook and Media Save for Later Attempts: 2 of 5 used Submit Answer Using multiple attempts has impacted your score. 10% score reduction after attempt 1

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The smallest unit of matter that can participate in a chemical reaction is a: (a) molecule (b) compound (c) atom (d) mixture

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X04 0.0/4.0 points (graded) You see a star close to the central mass moving with a speed $ \boldsymbol{v} $ (in metres per second). The apparent radius of its circular orbit is $ \boldsymbol{a} $ (measured in radians), and it takes a time $ \boldsymbol{p} $ to complete each orbit (in seconds) Derive an equation for the distance from Zing to the central mass. Explicitly indicate multiplication with a $ * $ symbol, and $ \pi $ with the letters "pi". \[ D= \]

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(a) If the circle for New York will have a radius of 5 cm, what would be the size (area) of that circle (which represents the population of New York)? Round your answer to one decimal place.

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somatic cell (diploid body cell) of a mosquito has six chromosomes. How chromatids will be present in a mosquito secondary oocyte?

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What is the primary purpose of the Svalbard Global Seed Vault in the arctic? to grow plants to maintain plant diversity to maintain crop diversity to store seeds for farming

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Using the Calvert formula, calculate the carboplatin dose for a female patient aged 38.

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(1 point) Two independent samples have been selected, 72 observations from population 1 and 55 observations from population 2. The sample means have been calculated to be $x_1 = 11.7$ and $x_2 = 10$. From previous experience with these populations, it is known that the variances are $\sigma_1^2 = 40$ and $\sigma_2^2 = 20$. For the hypothesis test of $H_0: (\mu_1 - \mu_2) = 1.4$ and $H_a: (\mu_1 - \mu_2) \neq 1.4$ Use $\alpha = 0.01$. (a) Compute the test statistic. z = (b) Find the approximate p-value p - value = The final conclustion is A. There is not sufficient evidence to reject the null hypothesis that $(\mu_1 - \mu_2) = 1.4$. B. We can reject the null hypothesis that $(\mu_1 - \mu_2) = 1.4$ and accept that $(\mu_1 - \mu_2) \neq 1.4$.

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What annual rate of return is earned on a $5,000 investment when it grows to $10,250 in five years? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Annual rate of return %

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When octane is mixed with methanol, the vapor pressure of octane over the solution is higher than we would calculate using Raoult's law. Why? Explain the discrepancy in terms of intermolecular attractions. Explain by selecting all that apply. This is called a negative deviation from Raoult's law. This is called a positive deviation from Raoult's law. This occurs when the solvent-solute intermolecular attractions are larger than the attractions between molecules in the pure solvent and molecules in the pure solute. This occurs when the solvent-solute intermolecular attractions are smaller than the attractions between molecules in the pure solvent and molecules in the pure solute. None of these.

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