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yuradex [85]
4 years ago
10

A 75 Kg skateboarder is riding downhill, exerting 25 N. What is their acceleration?

Physics
1 answer:
mylen [45]4 years ago
8 0

Answer:

a=0.33\frac{m}{s^2}

Explanation:

Hello.

In this case, since the force is defined in terms of the mass and acceleration as follows:

F=ma

Given the force and the mass, we can compute the acceleration as shown below:

a=\frac{F}{m}=\frac{25N}{75kg}=\frac{25kg\frac{m}{s^2} }{75kg}\\   \\a=0.33\frac{m}{s^2}

Best regards.

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A 60.00-cm guitar string under a tension of 50.000 N has a mass per unit length of 0.100 00 g/cm chegg
Evgen [1.6K]

Fundamental frequency,

f=v2l=T/μ−−−−√2l

=(50)/0.1×10−3/10−22×0.6−−−−−−−−−−−−−−−−−−−√

=58.96Hz

Let, n th harmonic is the hightest frequency, then

(58.93)n = 20000

∴N=339.38

Hence, 339 is the highest frequency.

∴fmax=(339)(58.93)Hz=19977Hz.

<h3>What is frequency?</h3>

In physics, frequency is the number of waves that pass a given point in a unit of time as well as the number of cycles or vibrations that a body in periodic motion experiences in a unit of time. After moving through a sequence of situations or locations and then returning to its initial position, a body in periodic motion is said to have experienced one cycle or one vibration. See also simple harmonic motion and angular velocity.

learn more about frequency refer:

brainly.com/question/254161

#SPJ4

7 0
2 years ago
Please help !!
nikitadnepr [17]
If the speed is constant, the acceleration a must be zero. Since force F = m•a, the total force must be zero.
In a 1D case, work W is the product of force F and distance d: W = F • d.
Since there is no more information given about friction or air resistance, I have to assume you are looking for the work done by the total force, wich is also zero.
3 0
3 years ago
5. A boy rides his skateboard 50 meters (m) West. Then he turns around
Ann [662]

Answer:

-30 m

Explanation:

50-20 but the direction is going west so it’s negative

5 0
3 years ago
Which unit of heat was originally defined in terms of the Fahrenheit temperature scale, not the Celsius scale?
Kitty [74]

Answer:

I think the answer would be British Thermal Unit

Explanation:

It equals one degree Fahrenheit and the equation for it is  1.055 × 103 joules.

8 0
3 years ago
Read 2 more answers
Why are bridges declared unsafe after a long use​
lina2011 [118]

After it's long use, the bridge continuously undergoes through alternating strains. in result, the elastic strength of the bridge gets reduced. while the process goes on the bridge makes elastic fatigue and a permanent change happens which makes it collapse which is the reason why bridges are declared unsafe after a long use​ :)

8 0
3 years ago
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