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Meghan Singson

Meghan S.

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ANSWERED

Supreeta N verified

Numerade educator

Questions 1. Three resistors of resistance 15 ?, 21 ? and 110 ? are connected in a series. a. Calculate the equivalent resistance of the circuit. b. If the resistors are connected in parallel, what would the equivalent resistance be? c. In part "b", if the above circuit was connected to a 6.0 V supply, what current would leave the battery? d. In part "c", what would the current be through the 21 ? resistor? 2. A voltmeter connected across the ends of a toaster indicates a potential difference of 120 V. If an ammeter shows a current through the toaster of 3.0 A, what is the resistance of the toaster? 3. Find R3, I1, I2, I4, I5, and I6. Hint: Replace two sets of parallel resistors with two equivalent resistors. 4. Check the power rating for your hair dryer. What is it? If you take 15 minutes to dry your hair and the cost of electricity is 12" per kWh, what did it cost?

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INSTANT ANSWER

Expand navigation sidebar Print Questions 1. Three resistors of resistance \( 15 \Omega, 21 \Omega \) and \( 110 \Omega \) are connected in a series. a. Calculate the equivalent resistance of the circuit. b. If the resistors are connected in parallel, what would the equivalent resistance be? c. In part "b", if the above circuit was connected to a \( 6.0 \mathrm{~V} \) supply, what current would leave the battery? d. In part "c", what would the current be through the \( 21 \Omega \) resistor? 2. A voltmeter connected across the ends of a toaster indicates a potential difference of \( 120 \mathrm{~V} \). If an ammeter shows a current through the toaster of \( 3.0 \mathrm{~A} \), what is the resistance of the toaster? 3. Find \( R_{3}, I_{1}, I_{2}, I_{4}, I_{5} \), and \( I_{6} \). Hint: Replace two sets of parallel resistors with two equivalent resistors. 4. Check the power rating for your hair dryer. What is it? If you take 15 minutes to dry your hair and the cost of electricity is 124 per kWh, what did it cost? Assessment Details Your submission should include the following: Your answers to the problem set. The formulas used to solve the problems.

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ANSWER IN PROGRESS

Expand navigation sidebar Print Questions 1. Three resistors of resistance \( 15 \Omega, 21 \Omega \) and \( 110 \Omega \) are connected in a series. a. Calculate the equivalent resistance of the circuit. b. If the resistors are connected in parallel, what would the equivalent resistance be? c. In part "b", if the above circuit was connected to a \( 6.0 \mathrm{~V} \) supply, what current would leave the battery? d. In part "c", what would the current be through the \( 21 \Omega \) resistor? 2. A voltmeter connected across the ends of a toaster indicates a potential difference of \( 120 \mathrm{~V} \). If an ammeter shows a current through the toaster of \( 3.0 \mathrm{~A} \), what is the resistance of the toaster? 3. Find \( R_{3}, I_{1}, I_{2}, I_{4}, I_{5} \), and \( I_{6} \). Hint: Replace two sets of parallel resistors with two equivalent resistors. 4. Check the power rating for your hair dryer. What is it? If you take 15 minutes to dry your hair and the cost of electricity is 124 per kWh, what did it cost? Assessment Details Your submission should include the following: Your answers to the problem set. The formulas used to solve the problems.

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James Kiss verified

Numerade educator

A 9 Volt battery does 1150 J of work transferring a charge. Calculate the amount of charge transferred.

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Jennifer Hudspeth verified

Numerade educator

2. Using the molecule XeF2 a) Complete the Lewis Dot Diagram (2 marks) b) What is the VSEPR notation of XeF2? (1 mark) c) What is the shape of the molecule? (1 mark) d) Compare the electron geometry and the molecular geometry of this molecule? (2 mark) Application (6 marks)

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Supreeta N verified

Numerade educator

2. Sodium Fluoride and Sodium Iodide are both ionic compounds which are solids at room temperature. They differ substantially in terms of their melting points (1197°C vs 1543°C). Determine which melting point belongs to which compound and explain why this is, referring to the atomic structure of each compound (3 marks)

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Supreeta N verified

Numerade educator

Communication ( /15 marks) 1. Using orbital diagrams, a neat sketch, or a combination, indicate and explain the orbital overlap that occurs between each atom within each compound (9 marks) b) CH4 (methane) c) N2 (nitrogen)

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Supreeta N verified

Numerade educator

35. Which molecule is likely to have the highest boiling point? a) C2H6 b) Cl2 c) H2S d) CH3OH e) CH4 36. What is the molecular geometry of XeF4? (S is the central atom.) a) see-saw b) trigonal pyramidal c) T-shaped d) tetrahedral e) square planar Inquiry (10 marks) 1. Gold has, atomic number 79 a) When filling up the orbitals of an element following the aufbau principle, what is the expected electron configuration? (1 mark) (you may use an abbreviated electron configuration to save space) b) With respect to gold, the aufbau principle does not predict its exact electron configuration. Using an orbital diagram, show the experimentally determined electron configuration of gold (1 mark) (you may use an abbreviated orbital diagram) c) What does this suggest about the stability of the orbitals? (2 mark)

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Supreeta N verified

Numerade educator

A boat leaves a marina and sails 2.0 km [S], then 2.0 km [E], then 2.0 km [N], and finally 2.0 km [W], taking a total time of 2.0 h for the trip. What is the magnitude of the average velocity of the boat?

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Supreeta N verified

Numerade educator

A bicycle accelerates from 10 km/h to 20 km/h in 12 min. What is its displacement while accelerating?

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