Author Question: A lighted candle is 10 m away from a wall. A concave mirror is being used to project an image of the ... (Read 55 times)

vicotolentino · **on:** Jul 29, 2018

A lighted candle is 10 m away from a wall. A concave mirror is being used to project an image of the candle onto the wall. If the image is going to be 3.0 times the size of the object, how far should the mirror be from the wall?

A)

6.5 m
B)

7.0 m
C)

6.0 m
D)

5.5 m
E)

15 m

Question 2

What is the mass of a solid sphere that has a density 15.0 103 kg/m3 and a radius 10.0 cm?

A)

62.8 kg
B)

4.56 kg
C)

298 kg
D)

3.58 106 kg
E)

15.0 kg