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babymother [125]
2 years ago
7

Classify the following situations as involving balanced or unbalanced forces.

Physics
1 answer:
Murrr4er [49]2 years ago
5 0

Answer:

11212121221212121212121212121212121212121212121221212

Explanation:

12121212 i am jj and i am 8

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When the thermal energy of a material decreases, _____.
Pani-rosa [81]
The surrounding environment cool off is the answer
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A 1.80-m string of weight 0.0126 N is tied to the ceiling at its upper end, and the lower end supports a weight W. Neglect the v
Veseljchak [2.6K]

Answer:

W = 0.135 N

Explanation:

Given:

- y (x, t) = 8.50*cos(172*x -2730*t)

- Weight of string m*g = 0.0126 N

- Attached weight = W

Find:

The attached weight W given that Tension and W are equal.

Solution:

The general form of standing mechanical waves is given by:

                            y (x, t) = A*cos(k*x -w*t)  

Where k = stiffness and w = angular frequency

Hence,

                           k = 172 and w = 2730

- Calculate wave speed V:

                            V = w / k = 2730 / 172 = 13.78 m/s

- Tension in the string T:

                            T = Y*V^2

where Y: is the mass per unit length of the string.

- The tension T and weight attached W are equal:

                           T = W = Y*V^2 = (w/L*g)*V^2

                            W = (0.0126 / 1.8*9.81)*(13.78)^2

                            W = 0.135 N

4 0
3 years ago
Calculate the mechanical advantage of a hammer, if the input force is 125 N
olganol [36]

Answer:

16

Explanation:

Mechanical advantage = force out / force in

MA = 2000 N / 125 N

MA = 16

5 0
3 years ago
Which equation is equivalent to Log (26•35) ?
Nady [450]

Answer:

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6 0
3 years ago
PLEASE HELP WILL GIVE BRANLIEST IF CORRECT
coldgirl [10]

Answer:

Explanation:

  • z: commutator
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3 years ago
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