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fenix001 [56]
3 years ago
13

If substance a and substance b have very different values for the index of refraction, what will happen to a light ray that pass

es from one of these substances into the other?
a. it will not be deflected.
b. it will be deflected by a small amount.
c. it will be deflected by a great amount.
d. the actual values would be needed to figure this out.
Physics
1 answer:
dmitriy555 [2]3 years ago
5 0
I think it will be deflected by a great amount
⊕
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How would the period of a simple pendulum be affected if it were located on the moon instead of the earth?
OlgaM077 [116]

Answer:

On moon time period will become 2.45 times of the time period on earth

Explanation:

Time period of simple pendulum is equal to T=2\pi \sqrt{\frac{l}{g}} ....eqn 1 here l is length of the pendulum and g is acceleration due to gravity on earth

As when we go to moon, acceleration due to gravity on moon is \frac{1}{6} times os acceleration due to gravity on earth

So time period of pendulum on moon is equal to

T_{moon}=2\pi \sqrt{\frac{l}{\frac{g}{6}}}=2\pi \sqrt{\frac{6l}{g}} --------eqn 2

Dividing eqn 2 by eqn 1

\frac{T_{moon}}{T}=\sqrt{\frac{6l}{g}\times \frac{g}{l}}

T_{moon}=\sqrt{6}T=2.45T

So on moon time period will become 2.45 times of the time period on earth

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3 years ago
One way for a family to determine their energy use is by analyzing their electric bill each month. Most energy bills include a g
strojnjashka [21]

Answer:

C)Before leaving for their trip, turn the central heating system off, along with lights and electrical household appliances.

Explanation:

Although, the other three options will also reduce their electricity bill but they do not explain why Mr. Hernandez's family got same electricity bill as last year even though this time they were not home for one and a half week. Also, A), B) and D) ideas are not reasonable.

So, the only conclusion is that even when they were on a vacation. the electrical appliances in their home were on. That's why the bill remained the same.

The idea of turning the central heating system off, along with lights and electrical household appliances before they leave for the trip will help reduce the energy usage. Also, it is reasonable.

4 0
3 years ago
Ex 3) A tennis player lobs the tennis ball up in the air during a serve at a rate 3 m/s.
slega [8]

Explanation:

s=(v^2-u^2)/2g

=(0-3^2)/2*10

= 0.45m

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Mashcka [7]

Answer:

In the present study, the startle blink reflex is used as a measure of emotion regulation to effective picture stimuli. Based on the aphasic theory of emotion, it is hypothesized that the startle response will be largest in magnitude in the presence of negative emotional stimuli (Varanasi, Spence, & Lang, 1988).

3 0
2 years ago
What part of this equation represents the reactants?
hichkok12 [17]
The answer would be c.
your equation should look like:
reactants-----> products
5 0
3 years ago
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