A traveling wave on a taut string
with a tension force Tis given by
the wave function: y(x,t) =
0.1sin(4x+100t), where x and y
are in meters and t is in seconds.
The linear mass density of the
string is p = 0.1 Kg/m. If the
tension is reduced by a factor of
two, while keeping the same
amplitude, same frequency, and
doubling the linear mass density,
then the new power of the
wave, is​

Answer:

Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is responsible for the formation of clouds.

Explanation:

just is

Answer:

As objects move around over time, the energy associated with them—e.g., kinetic, gravitational potential, heat—might change forms, but if energy is conserved, then the total will remain the same. Conservation of energy applies only to isolated systems.

thenks and pls mark me barinliestt :))

Answer:

The carpet has a buildup of electrons in it that get released onto your body when you rub across the floor while the hardwood doesn't have electrons built up inside of it.

Explanation:

I study that

Answer:

r = 6.6 x 10³ m = 6600 m

Explanation:

The potential at a distance from a charged sphere can be given as follows:

[tex]V = \frac{kq}{r}\\\\r = \frac{kq}{V}[/tex]

where,

r = distance = ?

k = Colomb Constant = 9 x 10⁹ Nm²/C²

q = charge on sphere = 3.3 C

V = potential = 4.5 MV = 4.5 x 10⁶ V

Therefore,

[tex]r = \frac{(9\ x\ 10^9\ Nm^2/C^2)(3.3\ C)}{4.5\ x\ 10^6\ V}[/tex]

r = 6.6 x 10³ m = 6600 m

Answer:

Option B is appropriate for this question

Answer: [tex]8.54\times 10^{-5}\ s[/tex]

Explanation:

Given

The initial magnetic field is [tex]B=0.27\ T[/tex]

No of turns [tex]N=599\ \text{turns}[/tex]

Diameter of the solenoid [tex]d=9.29\ cm[/tex]

Induced EMF [tex]E=12.8\ kV[/tex]

Induced emf is the product of no of turns and rate of change of flux.

[tex]\Rightarrow E=-N\cdot \dfrac{\Delta \phi }{\Delta t}\\\\\Rightarrow E=-N\cdot \dfrac{\Delta (B\cdot A)}{\Delta t}\\\\\Rightarrow E=-NA\cdot \dfrac{\Delta B}{\Delta t}\\\\\text{Insert the values}\\\\\Rightarrow 12.8=-599\times \pi r^2\cdot \dfrac{(0-B)}{\Delta t}\\\\\Rightarrow \Delta t=\dfrac{599\times \pi \times (4.64\times 10^{-2})\times 0.27}{12.8\times 10^3} \\\\\Rightarrow \Delta t=854.71\times 10^{-7}\ s\\\\\text{Taking absolute value}\\\Rightarrow \Delta t=8.54\times 10^{-5}\ s[/tex]

Answer:

the frequency of the oscillation is 1.5 Hz

Explanation:

Given;

mass of the spring, m = 1500 kg

extention of the spring, x = 5 mm = 5 x 10⁻³ m

mass of the driver = 68 kg

The weight of the driver is calculated as;

F = mg

F = 68 x 9.8 = 666.4 N

The spring constant, k, is calculated as;

k = F/m

k = (666.4 N) / (5 x 10⁻³ m)

k = 133,280 N/m

The angular speed of the spring is calculated;

[tex]\omega = \sqrt{\frac{k}{m} } \\\\\omega = \sqrt{\frac{133280}{1500} } = 9.426 \ rad/s[/tex]

The frequency of the oscillation is calculated as;

ω = 2πf

f = ω / 2π

f = (9.426) / (2π)

f = 1.5 Hz

Therefore, the frequency of the oscillation is 1.5 Hz

Answer:

I linked a screen shot. The decimal version of that is:

11.03 (you want to use the positive version since you're working with area)

Answer:hi

Explanation:

Answer:

1.8*10^4 Joules

Explanation:

Given data

Voltage= 6volts

Q= 3000 C

We know that the energy due to a point charge is

Pe= QV

substitute

Pe= 3000*6

Pe=18000

Pe= 18000Joules

Pe= 1.8*10^4 Joules

Answer:

13.5 x 10^-9 A

Explanation:

Yes

Answer:

[tex]\epsilon_2=0.098[/tex]

Explanation:

Diameter [tex]d=30cm=0.3m[/tex]

Temperature [tex]T=600k[/tex]

Rate of supply [tex]r=65W[/tex]

Emissivity of base surface [tex]\in_b =0.55[/tex]

Temperature at base [tex]T_b=400k[/tex]

Generally the equation for Area of base surface is mathematically given by

 [tex]A_b=\frac{\pi}{4}d^2[/tex]

 [tex]A_b=\frac{\pi}{4}0.3^2[/tex]

 [tex]A_b=0.0707m^2[/tex]

Generally the equation for Area of Hemispherical dome is mathematically given by

 [tex]A_h=\frac{\pi}{2}d^2[/tex]

 [tex]A_h=\frac{\pi}{2}0.3^2[/tex]

 [tex]A_h=0.1414m^2[/tex]

Since base is a flat surface

 [tex]F_{11}+F_{12}=1[/tex]

 [tex]F_{11}=0[/tex]

Therefore

 [tex]F_{12}=1[/tex]

 [tex]A_b=0.0707m^2[/tex]

Generally the equation for Net rate of radiation heat transfer between two surfaces is mathematically given by

 [tex]Q_{21}=-Q_{12}[/tex]

 [tex]Q_{21}=\frac{\sigma(T_1^4-T_2^4)}{\frac{1-\epsilon}{A_b\epsilon_1} +\frac{1}{A_bF_{12}} +\frac{1-\epsilon_2}{A_h*\epsilon_2} }[/tex]

Where

 [tex]\sigma=5.67*10^{-8}[/tex]

Therefore

  [tex]65=\frac{(5.67*10^{-8}(400^4-600^4))}{\frac{1-0.55}{0.0707*0.55}+\frac{1}{0.0707}+\frac{1-\epsilon_2}{0.1414*\epsilon_2}}[/tex]

 [tex]\epsilon_2=0.098[/tex]

 [tex]\epsilon_2 \approx 0.1[/tex]

Therefore  the emissivity of the dome is

 [tex]\epsilon_2=0.098[/tex]

Answer:

The number of particles in state E0 over the number of particles in state E1  will reduce

Explanation:

E0 represents the ground level state when all the particles have same energy level.

E1 represents excited state in which only a few particle reaches

E0 and E1 get further apart  means that the energy difference between the two level increases.

Thus, the number of particles in state E0 over the number of particles in state E1  will reduce.

Answer:

B

Explanation:

quantization of energy is only seen in atoms

Answer:

As long as there is rain, a rainbow is possible. Rain is possible on a sunny day, and is known as a sunshower.The rainbow can be observed in a sunny day if the water droplets are present in air and the sun rays pass through it reaches the eye of the observer. In this situation, the observer can see a rainbow.

or

If you happened to look up at the sky this past weekend, you might have noticed a rare and beautiful sight: iridescent rainbow clouds, but not a drop of rain in sight. This phenomenon is known, fittingly, as cloud iridescence or irisation. The effect is not unlike seeing a rainbow painted on the clouds.

Answer:

2 Joule

Explanation:

Work=force *dISPLACMENT

2N*1M

2 JOUL

Answer:

The angle the boat must be pointed upstream is 69⁰

Explanation:

Check the image uploaded for the diagram;

Given;

speed of the boat on still water, = 4.6 km/h

speed of the boat on a river with current, = 1.8 km/h

The angle the boat must be pointed upstream is calculated as follows

[tex]tan(\theta) = \frac{4.6}{1.8} \\\\tan(\theta) = 2.556\\\\\theta = tan^{-1}(2.556)\\\\\theta = 68.63^0\\\\\theta = 69^0[/tex]

Solution :

Given :

mass of the plank, m = 14 kg

length of the plank, l = 1.9 m

Distance between [tex]$F_2$[/tex] and the end at which [tex]$F_1$[/tex] is acting, [tex]$r_2$[/tex] = 0.49 m

Torque exerted by the weight of the plank is given by :

[tex]$\tau_w= r_{\perp} \times F$[/tex]

    [tex]$=-\frac{1.9}{2} \times 14 \times 9.8$[/tex]

    = -130 Nm

The torque exerted by [tex]$F_1$[/tex] is

[tex]$\tau_1= r_{1} \times F_1$[/tex]

    [tex]$= 0 \times F_1$[/tex]

   = 0

Torque exerted by [tex]$F_2$[/tex] is

[tex]$\tau_2= r_{2} \times F_2$[/tex]

    [tex]$= 0.49 \times F_2$[/tex]

   [tex]$= 0.49 F_2$[/tex]

Since the system is in equilibrium, the zero rotational acceleration occurs when the net external torque on the system is zero, i.e.

[tex]$\sum \tau = 0$[/tex]

Therefore, we get

[tex]$$\sum \tau= \tau_1+\tau_2+\tau_w[/tex]

 [tex]$0= 0+0.49F_2+(-130)$[/tex]

[tex]$F_2=\frac{130}{0.49}$[/tex]

    = 265 N (approx)

We know that zero linear acceleration occurs when the net external force is zero on the system to achieve equilibrium, i.e.

[tex]$\sum F = 0$[/tex]

[tex]$\sum F = -F_1+F_2-mg=0$[/tex]

[tex]$F_1=F_2-mg$[/tex]

    = 265 - (14 x 9.8)

    = 128 N (approx)

Answer:

[tex]v = u + at \\ 25 = 12 + a6 \\ 13 = 6a \\ a = 2.16 \\ [/tex]

a=2.16ms^-2

Answer:

interference is between destructive  and constructive

Explanation:

The interference of two sound waves periodicity in phase by the speakers is

          Δr = [tex]\frac{\phi }{2\pi } \ \lambda[/tex]

in this case they indicate that the frequency is f = 700 Hz, the wave speed is

            v =λ f

            λ = v / f

            λ = 341/700

            λ = 0.487 m

Let's use the Pythagorean theorem to find the distance that each wave travels

        r₁ = [tex]\sqrt{x^2 + y^2}[/tex]

let's measure the distance from speaker 1

          r₁ = [tex]\sqrt{5^2 + 1^2}[/tex]

          r₁ = 5,099 m

the distance from the second speaker

          r₂ = \sqrt{x^2 + y^2}

          r₂ = [tex]\sqrt{5^2 +3^2}[/tex]

          r₂= 5.831 m

the difference in the way is

          Δr = r₂ -r₁

          Δr = 5,831 - 5,099

          Δr = 0.732 m

         [tex]\frac{ \phi }{2\pi }[/tex] = Δr /λ

         \frac{ \phi }{2\pi } = 0.732 / 0.487

         \frac{ \phi }{2\pi } = 1.50

this is the phase difference this phase difference is approximately

            Ф= [tex]\frac{\pi }{2}[/tex] =1.57,

so the interference is between destructive ( Ф = π) and constructive (Ф=2π)

Answer:

Your answer is wavelength

Answer:

1) true 2) true 3) true 4) true 5) false 6) false

Explanation:

The answer is A The first law

Answer:

C) the heat removed from the inside to the work done to remove the heat.

Explanation:

Refrigerator is a heat engine working in reverse direction . Heat from cold source is taken out , some work is done to remove them and total heat and work energy is thrown into outside surrounding .

If q heat is taken out and W is work done to get this heat out .

coefficient of performance ( COP ) = q / W .

Hence C ) is the right choice .

Answer:

• specific heat

1 Answer. The specific heat is the amount of heat required to raise the temperature of 1 g of substance by one degree Celsius or one Kelvin

Answer:

Metamorphic rocks were once igneous or sedimentary rocks, but have been changed (metamorphosed) as a result of intense heat and/or pressure within the Earth's crust. They are crystalline and often have a “squashed” (foliated or banded) texture.

Explanation:

:)