Chapter 36: Q. 8 (page 1059)

Bjorn is standing at $x = 600 m$ . Firecracker $1$ explodes at the origin and firecracker $2$ explodes at $x = 900 m$ . The flashes from both explosions reach Bjorn’s eye at $t = 3.0 μ s$ . At what time did each firecracker explode?

Short Answer

Expert verified

We have given that, Bjorn is standing at $x = 600 m$ .

Firecracker $1$ explodes at the origin and firecracker explodes at $x = 900 m$ .

The flashes from both explosions reach Bjorn’s eye at $t = 3.0 μ s$ .

t2=1.0μsLight left firecracker $2$ explode at $t_{2} = 2 μ s$ .

Step by step solution

Given Information

We have given that, Bjorn is standing at $x = 600 m$ .

Firecracker $1$ explodes at the origin and firecracker explodes at $x = 900 m$ .

The flashes from both explosions reach Bjorn’s eye at $t = 3.0 μ s$ .

Simply

Bjorn is $600 m$ away from the source. It takes $2.0 μ s$ for light to reach Bjorn.

$t = \frac{600}{speedoflight} t = \frac{600}{3 \times 10^{8}} t = 2 \times 10^{- 6} s t = 2 μs$

This flash arrived at Bjorn at $t = 2.0 μ s$ leaving firecracker at $t_{1} = 1.0 μ s$ .

$t_{2} = \frac{300}{3 \times 10^{8}} t_{2} = 10^{- 6} t_{2} = 1 μ s$

It takes $1.0 μ s$ for the flash from Firecracker $2$ to reach Bjorn.

Light left firecracker $2$ at $t_{2} = 1.0 μ s$ .

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Bjorn is standing at $x = 600 m$ . Firecracker $1$ explodes at the origin and firecracker $2$ explodes at $x = 900 m$ . The flashes from both explosions reach Bjorn’s eye at $t = 3.0 μ s$ . At what time did each firecracker explode?

Short Answer

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Bjorn is standing at x=600m. Firecracker 1explodes at the origin and firecracker2explodes at x=900m. The flashes from both explosions reach Bjorn’s eye at t=3.0μs. At what time did each firecracker explode?

Short Answer

Step by step solution

Given Information

Simply

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Engineering Physics

Circular Motion and Gravitation

Oscillations

Magnetism and Electromagnetic Induction

Astrophysics

Force

Study anywhere. Anytime. Across all devices.

Bjorn is standing at $x = 600 m$ . Firecracker $1$ explodes at the origin and firecracker $2$ explodes at $x = 900 m$ . The flashes from both explosions reach Bjorn’s eye at $t = 3.0 μ s$ . At what time did each firecracker explode?