Leon sees a poster that shows a lake in front of a snow-capped mountain. The mountain appears upside down in the lake. Which best explains why the image of the mountain appears in the lake?A.The surface of the lake is smooth.
B.The surface of the lake is transparent.
C.The surface of the lake is polished.
D.The surface of the lake is rough.

Answers

Answer 1
Answer:

Answer: The correct answer is "The surface of the lake is smooth".

Explanation:

The light gets reflected from the smooth surface at the same angle as it hits that surface. If the light gets reflected in all direction from the rough surface when it hits the surface. Then, there will be diffuse reflection.

In the given problem, Leon sees a poster that shows a lake in front of a snow-capped mountain. The mountain appears upside down in the lake. Here, the water acts like a mirror. The light rays incident on the surface of the water from the mountainthen the reflected rays get reflected back from the smooth surface of the lake. Here, the angle of incidence is equal to the angle of the reflection.

One can see the image of the object on the surface of the lake.

Therefore, the correct option is (A).

Answer 2
Answer:

Answer:

the answer is a.

Explanation: have a good day loves


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Evaporation only occurs at the surface of a liquid

Answers

yes

evaporation starts on the surface

A stone is dropped from a bridge and hits the pavement below in two seconds. What is the velocity of the stone when it hits the pavement?A. 0.20 m/s
B. 19.6 m/s
C. 4.9 m/s
D. 9.8 m/s

Answers

We have: a = v/t
Here, t = 2 s  [ Given ]
a = 9.8 m/s²  [constant value for earth system ]

Substitute their values into the expression:
9.8 = v/2
v = 9.8 × 2
v = 19.6 m/s

In short, Your Answer would be Option B

Hope this helps!

i just did the quiz and so the only 2 options that made logical sense would be B (19.6 m/s) or D (9.8 m/s) the reason someone could get confused between these two is because 19.6 divided by 2 is 9.8 m/s so for each second it will go down 9.8 m/s but since it wants to know the velocity it would be 19.6 m/s

hope this helps

How can three resistors of resistances 2 ohm 3 ohm and 6 ohm be connected to give a total resistance

Answers

Explanation:

Three resistors of resistances 2ohm,3ohm, and 6ohm respectively.

Let R1=2Ω

⇒R2=3Ω

⇒R2=6Ω

● A total resistance of 4Ω from three resistors of given resistances. Firstly, connect the two resistors of 3Ω and 6Ω in parallel to get a total resistance of 2Ω which is less than the lowest individual resistance.

●When R 2 and R 3 are connected in parallel with

R1 in series we get

⇒1/R=1/R2+1/R3

⇒1/R=1/3+1/6

⇒1/R=1/2

⇒R=2Ω

Hence, the total resistance of the circuit is 4Ω.

The precision of a voltmeter is ±0.005 V. The accepted value for a measurement is 9.016 V. Which measurement is in the accepted range?

Answers

Since there are no choices given, let us just solve for the acceptable range of values. The problem states that the precision of a voltmeter is +- 0.005 V. Meaning, the value can deviate by this amount positively or negatively. Since our accepted value is 9.016 V, then the acceptable range would be 9.011 V ~ 9.021 V.

Resonance always causes the object resonating to fall apart or be destroyed. true or false

Answers

The statement about "Resonance always causes the object resonating to fall apart or be destroyed" is false. Resonance always causes the object near it to vibrate more.

Answer:

False

Explanation:

The work done by stretching a certain spring increases by 0.13x joules per centimeter (where x is the displacement, in centimeters, beyond the spring's natural length). How much work (in Joules) must be done in order to stretch the spring from x?

Answers

Answer:

W = 0.06\cdot (x_(f)^(2)-x_(o)^(2))

Explanation:

The work done by stretching the spring is:

W = 0.13\int\limits^{x_(f)}_{x_(o)} x\, dx

W = 0.06\cdot (x_(f)^(2)-x_(o)^(2))