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Lunna [17]
1 year ago
15

1. A 25.35-g piece of iron absorbs 1562.75 Joules of heat energy, and its temperature

Physics
1 answer:
Lera25 [3.4K]1 year ago
8 0

Answer:

Q = C M T        where C is the specific, M the mass, T the temperature change

Note 1 cal = 4.19 Joules

1562.75 J / (4.19 J/cal) = 378 cal

C = Q / (M * T) = 378 cal / (25.35 g * 155 deg C)

C = .096 cal / g deg C

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<h3>Resultant of the two vectors</h3>

The resultant of the two vectors is calculated as follows;

R = a² + b² - 2ab cos(θ)

where;

  • θ is the angle between the two vectors =  45° + (90 - 57) = 78⁰
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Learn more about resultant vector here: brainly.com/question/28047791

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