An observer sitting at a bus stop sees the bus drive by at 30 m/s to the east. He also sees a

Physics

1 answer:

Dafna1 [17]4 years ago

8 0

Answer:

32 m/s

Explanation:

The speed of a bus is 30 m/s due East wrt the passenger

He also sees a passenger on the bus walking to the back at 2 m/s.

We need to find the passenger's velocity relative to the bus. As the observer sees that the bus and the passenger are moving in opposite direction. Let v is the relative velocity. So,

v = 30 m/s + 2 m/s

v = 32 m/s

Hence, the passenger's velocity relative to the bus is 32 m/s.

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In a diffraction grating experiment, light of 600 nm wavelength produces a first-order maximum 0.350 mm from the central maximum

NARA [144]

Answer:

497.143 nm.

Explanation:

Diffraction grating experiment is actually done by passing light through diffraction glasses, the passage of the light causes some patterns which can be seen on the screen. This is because light is a wave and it can spread.

The solution to the question is through the use of the formula in the equation (1) below;

Sin θ = m × λ. ---------------------------------(1).

Where m takes values from 0, 1, 2, ...(that is the diffraction grating principal maxima).

Also, m × λ = dc/ B -------------------------------------------(2).

We are to find the second wavelength, therefore;

λ2 =( m1/c1) × (c2/m2) × λ1 ------------------------(3).

Where c1 and c2 are the order maximum and m = order numbers. Hence;

λ2 = (1/ .350) × (.870/3) × 600 = 497.143 nm.

7 0

3 years ago

Read 2 more answers

Which two variables have an effect on the electrical force between two electrically charged objects like two balloons?

V125BC [204]

Answer:

Correct answer: There are four variables rather than two - The amount of charge q₁, the amount of charge q₂, the distance between the spheres and the relative dielectric permeability εr of the medium.

Explanation:

I assume you meant two spherical objects.

The force between two charged objects according to Coulomb's law is calculated by the formula:

Fc = 1/ (4 π ε₀ εr) · (q₁ · q₂) / d²

where :

- ε₀ is the dielectric permeability of the vacuum

- εr is the dielectric permeability of the medium

- q₁ the amount of charge of the first sphere

- q₂ the amount of charge of the second sphere

- d is the distance between the spheres

God is with you!!!

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