The length of the telescope is 1.60 m and it has a magnification ...

[Chloeellawright]

The length of the telescope is 1.60 m and it has a magnification of 60.0. What is the focal length of the objective?
 
  A) 60.0 cm
  B) 157 cm
  C) 100 cm
  D) 128 cm
  E) 96.0 cm

Question 2

A firecracker breaks up into several pieces, one of which has a mass of 200 g and flies off along the x-axis with a speed of 82.0 m/s. A second piece has a mass of 300 g and flies off along the y-axis with a speed of 45.0 m/s.
 
  What are the magnitude and direction of the total momentum of these two pieces? A) 361 kgm/s at 56.3 from the x-axis
  B) 93.5 kgm/s at 28.8 from the x-axis
  C) 21.2 kgm/s at 39.5 from the x-axis
  D) 361 kgm/s at 0.983 from the x-axis
  E) 21.2 kgm/s at 56.3 from the x-axis

[gasdhashg]

Answer to Question 1

B

Answer to Question 2

C

[Chloeellawright]

TY

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You're welcome