Chapter 36: Q. 9 (page 1059)

Bianca is standing at $x = 600 m$ .Firecracker $1$ at the origin, and firecracker $2$ , at $x = 900 m$ explode simultaneously. The flash from firecracker $1$ reaches Bianca鈥檚 eye at $t = 3.0 渭 s$ .At what time does she see the flash from firecracker $2$ ?

Short Answer

Expert verified

Bianca will observe the flash at $t = 3 渭 s$ from firecracker $2$ .

Step by step solution

Given Information

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

Firecracker $1$ , at the origin, and firecracker $2$ at $x = 900 m$ , explode simultaneously.

The flash from firecracker reaches Bianca鈥檚 eye at $t = 3.0 渭 s$ .

Simplify

Bianca is standing at $x = 600 m$ .

The distance between the starting point and Bianca is $600 m$ .

The time taken to reach Bianca's eyes is as below

$t = \frac{600}{sppedoflight} t = \frac{600}{3 脳 10^{8}} t = 2 脳 10^{- 6} s t = 2 渭 s$

Cracker exploded at time $t = 2 渭 s$ because it was seen at time $t = 4 渭 s$ .

The time taken by 2nd cracker flash to reach Bianca eyes

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

Therefore, Bianca will observe the flash at $t = 3 渭 s$ .

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91影视

Bianca is standing at $x = 600 m$ .Firecracker $1$ at the origin, and firecracker $2$ , at $x = 900 m$ explode simultaneously. The flash from firecracker $1$ reaches Bianca鈥檚 eye at $t = 3.0 渭 s$ .At what time does she see the flash from firecracker $2$ ?

Short Answer

Step by step solution

Given Information

Simplify

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91影视

Bianca is standing at x=600m.Firecracker 1at the origin, and firecracker2, at x=900mexplode simultaneously. The flash from firecracker1 reaches Bianca鈥檚 eye at t=3.0渭s.At what time does she see the flash from firecracker2?

Short Answer

Step by step solution

Given Information

Simplify

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Mechanics and Materials

Oscillations

Electrostatics

Geometrical and Physical Optics

Wave Optics

Rotational Dynamics

Study anywhere. Anytime. Across all devices.

Bianca is standing at $x = 600 m$ .Firecracker $1$ at the origin, and firecracker $2$ , at $x = 900 m$ explode simultaneously. The flash from firecracker $1$ reaches Bianca鈥檚 eye at $t = 3.0 渭 s$ .At what time does she see the flash from firecracker $2$ ?