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10. The current to a projection lamp is measured at 4.7 A when the line voltage is 115.45 V. find the power dissipated in the lamp. (Hint: Power = voltage x current). Round your answer to 5 significant digits.

10. The current to a projection lamp is measured at 4.7 A when the line voltage is 115.45 V. find the power dissipated in the lamp. (Hint: Power = voltage x current). Round your answer to 5 significant digits.

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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10. The current to a projection lamp is measured at 4.7 A when the line voltage is 115.45 V. find the power dissipated in the lamp. (Hint: Power = voltage x current). Round your answer to 5 significant digits. 11. Find the cost, to the nearest dollar, of applying roofing membrane to a flat roof, 21.5m long and 15.2m wide, at $12.40 per square meter. 12. What will it cost, to the nearest cent, to cement the floor of a cellar 12.6m long and 9.2m wide at $6.25 per square meter?
Transcribed Image Text:10. The current to a projection lamp is measured at 4.7 A when the line voltage is 115.45 V. find the power dissipated in the lamp. (Hint: Power = voltage x current). Round your answer to 5 significant digits. 11. Find the cost, to the nearest dollar, of applying roofing membrane to a flat roof, 21.5m long and 15.2m wide, at $12.40 per square meter. 12. What will it cost, to the nearest cent, to cement the floor of a cellar 12.6m long and 9.2m wide at $6.25 per square meter?
4. The power dissipated in a resistance R through which is flowing a current I is equal to 1²R. Therefore, the power in a 36502 resistor carrying a current of 0.5855A is (0.5855)² (365)W. Evaluate this power and write the answer using 3 significant digits. 5. The period T (time for one swing) of a simple pendulum 2.55ft long is : 2.55 T = 2π seconds. Evaluate T and round you answer to 3 significant digits. 32.0 6. Write the following quantities in scientific notation. Keep the number of significant digits same in both given number and in its scientific notation.. a) 0.0000552 b) 6790.00 7. Convert each number to standard notation. a) 1.75 x 10-5 b) 9.00 x 104 8. Evaluate the following expressions. a) ((3.8 -0.6) x 2) + (2.2 + 4.4) b) (((6.6+0.5) + 0.2)÷7.1)² 9. How long will it take a rocket travelling at a rate of 3.2 x 106m/h to travel the 3.8 x 108 m from the earth to the moon? Round your answer to the nearest hour. (Hint: Distance = Rate x time)
Transcribed Image Text:4. The power dissipated in a resistance R through which is flowing a current I is equal to 1²R. Therefore, the power in a 36502 resistor carrying a current of 0.5855A is (0.5855)² (365)W. Evaluate this power and write the answer using 3 significant digits. 5. The period T (time for one swing) of a simple pendulum 2.55ft long is : 2.55 T = 2π seconds. Evaluate T and round you answer to 3 significant digits. 32.0 6. Write the following quantities in scientific notation. Keep the number of significant digits same in both given number and in its scientific notation.. a) 0.0000552 b) 6790.00 7. Convert each number to standard notation. a) 1.75 x 10-5 b) 9.00 x 104 8. Evaluate the following expressions. a) ((3.8 -0.6) x 2) + (2.2 + 4.4) b) (((6.6+0.5) + 0.2)÷7.1)² 9. How long will it take a rocket travelling at a rate of 3.2 x 106m/h to travel the 3.8 x 108 m from the earth to the moon? Round your answer to the nearest hour. (Hint: Distance = Rate x time)
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