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Dmitriy789 [7]
3 years ago
5

A string has an abrupt change in linear density at its midpoint so that the speed of a pulse on the left side is 2/3 of that on

the right side.
a. On which side is the linear density greater? Explain.
b. From which side would you start a pulse so that its reflection from the midpoint would not be inverted? Explain.
Physics
1 answer:
goldenfox [79]3 years ago
3 0

Answer:

Explanation:

a) Linear density is greater on the left side because the velocity of wave in a string is inversely proportional to the linear mass density of the string

b) We should start pulse from the left hand side so the reflected wave does not get inverted because the wave traveling from the denser to lighter medium gets reflected in the same phase.

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What are the standard units of length, mass, and volume in the<br> metric system?
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Answer:

Meter, Gram and Liter.

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8 0
3 years ago
A lawyer drives from her​ home, located 1 mile east and 8 miles north of the town​ courthouse, to her​ office, located 4 miles w
givi [52]

Answer:

d = 13 miles

Explanation:

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r_1 = (-4\hat i - 4\hat j)

now the position of her home is located at 1 miles east and 8 miles north of the court house

so the coordinates of her home is given as

r_2 = (1\hat i + 8 \hat j)

now the change in the position is given as the distance between office and home

d = r_2 - r_1

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4 0
4 years ago
Step 2: Apply NEwton's second law Apply ∑Fy = may , what should ay be equal to, since the block doesn't move in the y direction
andrey2020 [161]

Answer:

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Explanation:

We can solve this problem with the help of a free body diagram where we show the respective forces in each one of the axes, y & x. The free-body diagram and the equations are in the image attached.

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3 years ago
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