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3 years ago

I'm hooke's law F=kx, what does the k stand for

2 answers:

7 0

<span>F = kX</span>, where k is a constant factor characteristic of the spring: its stiffness, and X is small compared to the total possible deformation of the spring.

Svetllana [295]3 years ago

7 0

The spring constant I think.

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Match each prefix to the correct multiple of 10. 1. centi- 10 2. kilo- 100 3. deka- 1000 4. milli- 1/100 5. hecto- 1/10 6. deci-

Mice21 [21]

Explanation :

There are some basic metric conversions.

Prefix Multiple of 10

centi $\frac{1}{100}$

Kilo 1000

deka 10

milli $\frac{1}{1000}$

hecto 100

deci $\frac{1}{10}$

For example :

$1cm=\frac{1}{100}m\\\\1Km=1000m\\\\1mm=\frac{1}{1000}m\\\\1Km=10\text{ hecto meter}\\\\1Km=100\text{ deka meter}$

7 0

3 years ago

Read 2 more answers

Which of the following statements is an accurate description of sound transmission through various mediums?

yaroslaw [1]

Answer: The accurate statement which describes the transmission of sound through various medium is D.

Explanation:

Sound is longitudinal wave in which the vibration of particles travels parallel to the propagation of the motion of the wave. It requires a medium to travel. It consists of compression and rarefaction.

Sound insulator prevents the sound to travel for example plastic, wood etc. Sound travels faster in solid medium than in liquid medium. Sound travels faster in liquid than in gas. Less elastic material absorbs sound for example paper in compare to inelastic material.

Therefore, the accurate statement which describes the transmission of sound through various medium is "Sound insulators prevent sound from being transmitted better than elastic solids.

3 0

3 years ago

Read 2 more answers

Architects have to consider how sound travels when designing large buildings such as theaters, auditoriums, or museums. Sound in

serious [3.7K]

Answer:

I₂ = 0.04 W / m²

Explanation:

Sound intensity is the power emitted between the unit area

I = W / A

W = I A

sound is a wave that travels in space whereby its energy is distributed on the surface of a sphere

A = 4π r²

we substitute

W = I (4π r²)

the emission power is constant, so the intensity at two different points is

W = I₁ 4π r₁² = I₂ 4π r₂²

so the equation is

I₁ r₁² = I₂ r₂²

In this case the units are not shown in the exercise, suppose that all units are in the SI system

I₂ = $I_1 \ \frac{r_1^2}{r_2^2}$

let's calculate

I₂ = 4 $4 \ \frac{2^2}{20^2}$

I₂ = 0.04 W / m²

5 0

3 years ago

According to the pH chart, which is the strongest base?

KengaRu [80]

Answer:

HCl, Option A.

Explanation:

Hcl is a strong acid, NaOH is a strong base, the saliva has a relatively neutral pH and blood is slightly acidic.

7 0

3 years ago

Read 2 more answers

A person shouting at the top of his lungs emits aboue 1.0 w of energy as sound waves. What is the sound intensity 1.0 m from suc

umka21 [38]

Answer:

$I=0.0795\ W/m^2$

Explanation:

When a person shouts it emits 1 W of energy as sound waves, P = 1 W

Let I is the sound intensity 1 meters from such a person. We know that the power per unit area is called the sound intensity of the person. Its formula is given by :

$I=\dfrac{P}{A}$

$I=\dfrac{P}{4\pi r^2}$

$I=\dfrac{1\ W}{4\pi (1\ m)^2}$

$I=0.0795\ W/m^2$

So, the sound intensity of such a person is $0.0795\ W/m^2$ . Hence, this is the required solution.

3 0

4 years ago