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A 120 V potential difference is applied to a space heater whose resistance is 18 2 when hot. (a) At what rate is electrical energy transferred to thermal energy? (b) What is the cost for 5.6 h at US$0.05/kW•h?

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Dopamine activity in the brain is increased when a behavior leads to unexpected reward. Group of answer choices True False

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Question 31 Encoding information ______ helps preserve the information more than rote memorization. semantically visually verbally acoustically 1 pts

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EXPERIMENT 4: Exploring the Mole Show calculations for station 1 to 14: Station 1 Station 2 Station 3 Station 4 Station 5 Station 6 Station 7 Station 8 Station 9 Station 10 Station 11 Station 12 Station 13 Station 14 Show calculation for these Additional Questions: 1. How many moles of Pb is 9.34 × 1015 atoms of Pb? 2. How many grams are in 4.35 moles of Ar? 3. How many atoms are in 1.45 g of Ag? 4. How many grams are in 1.98 × 1021 atoms of Fe? 5. How many moles are in 6.24 × 1021 molecules of CaSO4? 6. How many grams are in 17.83 moles of carbon dioxide? 7. How many grams are in 2.38 × 1022 molecules of ammonia (NH3)? 8. How many carbon atoms are in 2.65 × 1023 molecules of C2H6? 9. How many moles of phosphorus are in 16.2 moles of aluminum phosphate? 10. How many grams of iron are in 21.6 grams of iron(III) oxide? 11. How many hydrogen atoms are in 65.2 grams of Ca(C2H3O2)2?

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Musk is also considering a long-term R&D project on rechargeable batteries (Project 2). The cost of this project is $68M today. The project will generate $22M in the first year (t-1) and this cash flow is expected to grow by 2% each year forever. What is the NPV of this project? Should Musk accept this project?

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(10 points) Using natural deduction, prove $(p \land q) \to r \iff p \to (q \to r)$

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Reflexes can be categorized as either somatic or autonomic. Autonomic reflexes are involuntary, and they usually involve smooth muscle, cardiac muscle, or glands. Somatic reflexes are also involuntary, but because they involve skeletal muscle, we can be more aware that the reflex is happening. Which of the six tested reflexes should be categorized as autonomic? Explain your reasoning.

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The table below shows the limit-order book of Stock XYZ when the market opens this morning. Buy Orders Sell Orders Price Shares Price Shares $10 150 $12 300 $9 100 $12.5 200 $8.5 250 $13 100 $8 100 $13.5 100 a. Suppose that Frank submits a limit sell order of 100 shares with price of 10.5, will his order be executed based on this limit order book? b. After Frank submits his order, Alice also comes to the market. Alice submits a market buy order of 500 shares. What is the average price per share that Alice pays? Note that Frank's order might have changed the original limit order book.

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Find the center of mass of the quarter disk in the first quadrant with radius = 3 and with the density \sigma(x, y) = 2x^2 + 2y^2. Give an exact answer. \bar{x} = \frac{1}{\pi} \bar{y} = \frac{1}{\pi}

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7. Exothermic: condensation sublimation melting boiling 8. For a given substance, the most exothermic phase change: boiling freezing condensation deposition 9. Which of the following has the lowest melting point? CF$_4$ CCl$_4$ CBr$_4$ Cl$_4$ 10. Highest boiling point: CH$_3$CH$_2$CH$_3$ CH$_3$OH CH$_3$Cl CH$_3$OCH$_3$ 11. Most polar: Cl$_2$O Cl$_2$S Cl$_2$Se Cl$_2$Te

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rodrigo o.