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guajiro [1.7K]
3 years ago
6

True or False question! ⬇⬇ Will give BRAINLIEST!

Physics
2 answers:
Dominik [7]3 years ago
8 0

Answer:

False

Explanation:

Each medium has its own index of refraction, which is related to the speed of light in that medium.

When light moves from one medium to another, the speed of light change causes the bend in ray of propagation when the angle between the two media is not perpendicular to the direction of propagation.

The angle of the bend is a function of the angle of incidence and the indexes of refraction in the two media.

Snell quantified it as

n₁sinθ₁ = n₂sinθ₂

where n₁ and n₂ are the indexes of refraction

and θ₁ = θ₂ are the angles of incidence of the ray on the surface between the two media

V125BC [204]3 years ago
3 0

Answer:

Explanation:true

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A T-shirt cannon can shoot a 0.085 kg T-shirt at nearly 30 m/s. The T-shirt cannon has a mass of 33 kg. If the initial net momen
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Approximately 0.077\; {\rm m\cdot s^{-1}} (assuming that external forces on the cannon are negligible.)

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If an object of mass m is moving at a velocity of v, the momentum p of that object would be p = m\, v.

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\begin{aligned} p(\text{t-shirt}) &= m(\text{t-shirt}) \, v(\text{t-shirt}) \\ &= 0.085\; {\rm kg} \times 30\; {\rm m \cdot s^{-1}} \\ &= 2.55 \; {\rm kg \cdot m \cdot s^{-1}} \end{aligned}.

If there is no external force (gravity, friction, etc.) on this cannon, the total momentum of this system should be conserved. In other words, if p(\text{cannon}) denote the momentum of this cannon:

p(\text{t-shirt}) + p(\text{cannon}) = 0.

p(\text{cannon}) = -p(\text{t-shirt}) = -2.55\; {\rm kg \cdot m \cdot s^{-1}}.

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