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Rama09 [41]
3 years ago
7

In a room that is 2.41 m high, a spring (unstrained length = 0.30 m) hangs from the ceiling. A board whose length is 1.86 m is a

ttached to the free end of the spring. The board hangs straight down, so that its 1.86-m length is perpendicular to the floor. The weight of the board (104 N) stretches the spring so that the lower end of the board just extends to, but does not touch, the floor. What is the spring constant of the spring?
Physics
1 answer:
Anna [14]3 years ago
5 0

Answer:

416 N\m

Explanation:

Weight of board

W=ma\\\Rightarrow W=104\ N

Length the spring can stretch = Total height of room - (unstrained length of spring + Length of Board)

2.41-(0.3+1.86)\\\Rightarrow 2.41-2.16=0.25\ m

From Hooke's law

W=kx\\\Rightarrow k=\frac{W}{x}\\\Rightarrow k=\frac{104}{0.25}\\\Rightarrow k=416\ N\m

The spring constant is 416 N/m

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<span>It would travel faster because their speed depends on the density and composition of material that they pass through.</span>
3 0
3 years ago
When finding the upper bound of the density, you put what number in the denominator?
lilavasa [31]
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3 0
3 years ago
A plane traveled west for 4.0 hours and covered a distance of 4,400 meters what’s the velocity
tatuchka [14]

0.31m/s

Explanation:

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8 0
3 years ago
______ involves organizing and breaking down information into easier groups to expand capacity. Rehearsal is the verbal repetiti
adell [148]

Hi!


The answers would be <u>chunking</u> & <u>short-term</u>


1. <u>Chunking </u>involves organizing and breaking down information into easier groups to expand capacity.

<h3>Explanation:</h3>

Chunking is a mental process that is observed to increase short-term memory by taking the information and categorizing it into small groups. For instance, a longer number taken as a single unit is harder to recall then when it is divided into smaller units. 235469350 is harder to instantly recall as compared to when it is chunked into 3 groups: 235 469 350.

This allows more information to be stored in, thereby increasing the capacity of the mind to store information.


2. Rehearsal is the verbal repetition of information. These techniques are especially important for the improvement of <u>short-term</u> memory.

<h3>Explanation: </h3>

Short-term memory is lost after a couple of seconds or minutes, for instance even if you chunk the information, you might not recall it after 30 seconds. Rehearsing or repetition of information, either loudly or mentally, extends the time a particular information is retained.

So you depending on the number of times you repeat the number 235 469 350, the more your short term memory improves .


Hope this helps!


6 0
3 years ago
The mass of an object with 500 J of kinetic energy moving with a velocity of 5 m/s is/
antiseptic1488 [7]

Answer:

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7 0
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