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Brrunno [24]
3 years ago
9

Suppose two waves collide and the temporary combined wave that results is smaller than the original waves. What term best descri

bes this interaction?
a. diffraction
b. destructive interference
c. standing wave formation
d. constructive interference
Physics
2 answers:
Serga [27]3 years ago
8 0

Answer: The correct answer is destructive interference.

Explanation:

Interference is the phenomenon in which there is a superposition of the waves. If the amplitude of the resultant wave is more than the original wave then there will be constructive interference.

If the amplitude of the resultant wave is lower than the original wave then there will be destructive interference.

Suppose two waves collide and the temporary combined wave that results is smaller than the original waves.

Therefore, the correct option is b.

babymother [125]3 years ago
7 0
The correct answer is B
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3 years ago
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A man starts walking north at 2 ft/s from a point p. five minutes later a woman starts walking south at 4 ft/s from a point 500
icang [17]
Refer to the diagram shown below.

After 5 minutes (300 seconds):
The man travels north by (2 ft/s)*(300 s) = 600 ft
The woman, located at q, 500 east of p, begins walking south at 4 ft/s.
The distance separating them is
d₁ = √(600² + 500²) = 781.025 ft

After 20 minutes:
The man has traveled for 20 minutes (1200 s).
The woman has traveled for 15 minutes (900 s).
The man has moved (2 ft/s)*(1200 s) = 2400 ft north of p.
The woman has moved (4 ft/s)*(900 s) = 3600 ft south of q.
The distance separating them is
d₂ = √(6000² + 500²) = 6020.8 ft

The separation from d₁ to d₂ occurs in 15 minutes (900s).
Therefore the rate of separation is
Rate = (d₂ - d₁ ft)/(900 s) = (6020.8 - 781.025)/900 = 5.822 ft/s
or
Rate = (5.822 ft/s)*(60 s/min) = 349.32 ft/min

Answer: 349.32 ft/min (or 5.82 ft/s)

4 0
3 years ago
with the aid of diagrams, explain how principle of conservation of mechanical energy applies in an apple that falls from a tree​
morpeh [17]

Answer:

refer to this attachment

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3 years ago
A stone is thrown vertically upward with a speed of 20.0 m/s. (a) How fast is it moving when it reaches 12.0 m? (b) How long is
kaheart [24]
<span>(a) How fast is it moving when it reaches 12.0 m?
To determine the velocity as it reaches 12.0 m, we use one of the kinematic equations,
</span>V^2 = Vo^2 + 2gh 
<span>where Vo = 20 m/s. </span>
<span>           g = -9.8 m/s^2 </span>
<span>           h = 12.0 m. </span>
V^2 = 20^2 + 2(-9.8)(12.0) 
<span>V^2 = 164.8
V = 12.84 m/s

(b) How long is required to reach this height?
 To determine the maximum height, we use the same equation we used above,
</span>V^2 = Vo^2 + 2gh 
where Vo = 20 m/s. 
           g = -9.8 m/s^2
           V = 0 (since at the maximum height velocity is zero) 
0^2 = 20^2 + 2(-9.8)h 
<span>h = 20.41 m

(c) Why are there two answers for (b)?
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5 0
3 years ago
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You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor. If you
Nataliya [291]

Answer:

Option B is correct.

The leads should be attached to the opposite faces that measure 3 cm × 5 cm to obtain the maximum possible resistance.

Explanation:

The resistance of a material is given by

R = (ρL)/A

where ρ = resistivity of the material

A = Cross sectional Area through which current would flow

L = length of the material.

From the relation, it is evident that the resistance of a material is directly proportional to its length and inversely proportional to its cross sectional Area.

As the length of material increases, the resistance of the material also increases, and a decreasing length translates to a decreasing resistance too. (Direct Proportionality)

And as the cross sectional Area of the material increases, the resistance of the material decreases. Decrease in cross sectional Area of the material translates to an increase in resistance. (Inverse Proportionality)

To maximize resistance of a material, it would make sense to maximize the length and minimize the cross sectional Area of that material. (Since resistivity is assumed to be constant)

And with a dimension of (3 × 5 × 8), the longest length is 8 cm and the smallest cross sectional Area is (3 × 5).

So, the leads should be atrached to the face with area (3 cm × 5 cm), which is the smallest cross sectional Area and gives the largest length between the faces (8 cm).

This subsequently maximizes the resistance.

Hope this Helps!!!

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3 years ago
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