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Author Question: Two plane mirrors make an angle of 50 with one another. A ray of light parallel to mirror 1 reflects ... (Read 78 times)

mydiamond

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on: Jul 28, 2018
Two plane mirrors make an angle of 50 with one another. A ray of light parallel to mirror 1 reflects off mirror 2 and then strikes mirror 1 . What is the angle of incidence the ray makes with mirror 1?
 a. 50
  c. 40
  b. The answer is not given.
  d. 55

Question 2

A slice of bread contains about 90 kcal. If specific heat of a person were 1.00 kcal/kgC, by how many C would the temperature of a 70.0-kg person increase if all the energy in the bread were converted to heat?
 a. 2.25C
  c. 1.43C
  b. 1.86C
  d. 1.29C


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billybob123

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

D


mydiamond

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Reply 2 on: Jul 28, 2018
Wow, this really help

irishcancer18

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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