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3 years ago

What acceleration will you give to a 27.8 kg

Physics

1 answer:

stich3 [128]3 years ago

3 0

Answer:

2.72m/s²

Explanation:

Given parameters;

Mass of box = 27.8kg

Force on box = 75.7N

Unknown:

Acceleration = ?

Solution:

Force is the product of mass and acceleration;

Force = mass x acceleration

Now insert the parameters and solve;

75.7 = 27.8 x a

a = $\frac{75.7}{27.8}$ = 2.72m/s²

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Answer:

False

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2 years ago

A mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. It ta

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Answer:

a). $K=528.92 \frac{N}{m}$

b). $m=4.84kg$

Explanation:

a).

The work of the spring is find by the formula:

$w_s =\frac{1}{2}*k*x^2$

So knowing the work can find the constant K'

$3.2J =\frac{1}{2}*k*(0.11m)^2$

Solve for K'

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b).

The force of the spring realice a motion so using the force and knowing the accelerations can find the mass

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$m=\frac{528.9*0.11m}{12m/s^2}$

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3 years ago

An instructor gives a demonstration in which he makes a standing wave on a long thin slinky. The slinky is 6.0 meters long. If y

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The characteristics of standing waves allows to find the result for the speed of the wave is:

The speed wave is: v = 10 m / s

The wave is a way of transmitting energy without mass displacement, , in the attachment we can see a diagram of the standing wave.

Each cycle corresponds to half a wavelength, they indicate that the frequency is 2.50 Hz and there are three cycles, so the wavelength is:

L = $n \frac{\lambda}{2}$

λ = 2L/n

λ = 2 6 /3

λ = 4 m

Wave speed is related to wavelength and frequency

v = λ f

v = 4 2.5

v = 10 m / s

In conclusion, using the characteristics of standing waves we can find the result for the speed of the wave is:

The wave speed is: v = 10 m / s

Learn more here: brainly.com/question/12536719

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3 years ago

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Answer:

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2 years ago

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