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kicyunya [14]
3 years ago
8

Which benefit outweighs the risks in the technological design of headphones?

Physics
1 answer:
Dmitriy789 [7]3 years ago
7 0

Answer:

The Answer is A They can damage hearing.

Explanation:

I took the Test

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The true brightness of an object is called its
g100num [7]
<span>The true brightness of an object is called its luminosity. It is the total amount of energy emitted by bright or meteorological objects over a period of time. It has the SI unit of joules per second or watts. So the answer is letter A. Intensity is the measure of how strong the substance or object is when it projects something. Magnitude is a measure of how great is the size the object produces. Viscosity is the measure of flow of a substance.</span>
8 0
3 years ago
Read 2 more answers
Assume it takes 10 J to stretch a spring 10 cm beyond its natural length. Find the work required (in Joules) to stretch the spri
Lady bird [3.3K]

Answer:

W = 30 J

Explanation:

given,

Work done = 10 J

Stretch of spring, x = 0.1 m

We know,

dW = F .dx

we know, F = k x

\int dW = \int_0^{0.1} k.x dx

W = \int_0^{0.1} k.x dx

W = k[\dfrac{x^2}{2}]_0^{0.1}

10 = k\dfrac{0.1^2}{2}

k = 2000

now, calculating Work done by the spring when it stretched to 0.2 m from 0.1 m.

W = \int_{0.1}^{0.2} 2000 x dx

W = 2000 [\dfrac{x^2}{2}]_{0.1}^{0.2} dx

W = 1000 x 0.03

W = 30 J

Hence, work done is equal to 30 J.

4 0
2 years ago
A 1400-kg rocket has a net propulsion force of 20 kN (kiloNewtons). Over a short time period, it uniformly speeds up from an ini
zubka84 [21]

Answer:

  W = 8.92 10² kJ

Explanation:

For this exercise they give us the strength, we must calculate the distance traveled, for this we need the rocket acceleration let's use Newton's second law

        F = m a

        a = F / m

        a = 20 103/1400

        a = 14.29 m/s²

With kinematics we can find the distance traveled

      v_{f}² = v₀² + 2 a x

      x = ( v_{f}²-v₀²) / 2 a

      x = (50² -35²) / 2 14.29

      x = 1275 / 28.58

      x = 44.61 m

Let's calculate the work

      W = F.d

The bold is vector; as indicated by the force is in the direction of movement the scalar product is reduced to the ordinary product

     W = F d

     W = 20 10³ 44.61

     W = 8.92 10⁵ J

     W = 8.92 10² kJ

6 0
3 years ago
En que pais las mujeres pueden participar en los deportes ???
CaHeK987 [17]

im pretty sure it was tennis

3 0
3 years ago
In a drill during basketball practice, Sally runs the length of the 30- meter court and back. Sally does this in 60 seconds. Wha
Juliette [100K]

Hey!

-----------------------------------------------

Formula:

speed = distance ÷ time

-----------------------------------------------

Solution:

Distance is 60 meters.

Time is 60 seconds.

speed = 60 / 60

speed = 1 meters/seconds

-----------------------------------------------

Answer:

1 meters/seconds.

-----------------------------------------------

Hope This Helped! Good Luck!

6 0
3 years ago
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