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3 years ago

Which color has the highest frequency?

2 answers:

4 0

The answer would be "D. Purple" This is because, the Purple section of the electromagnetic spectrum has the shortest wavelength and the highest frequency.

FinnZ [79.3K]3 years ago

3 0

D.People Has the highest frequency

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A uniform meter stick of mass $M$ has a half-filled can of fruit juice of mass $m$ attached to one end. The meter stick and the

notka56 [123]

Answer:

111.6 g

Explanation:

Given

m + M = 2.58 / 9.8

= 0.2632 kg

When the can of fruit juice is balance from scale , we get following relation

M x ( 50 - 21.2 ) = m x 21.2 ( balancing the torque due to weight of scale and can about the balancing point )

M x 28.8 = 21.2 m

= 21.2 ( 0.2632 - M )

= 5.58 - 21.2 M

M ( 28.8 + 21.2 ) = 5.58

M = .1116 kg

= 111.6 g

7 0

4 years ago

What defines "the time of full wave"

eimsori [14]

Answer:

A) Periodic time

Explanation:

Wavelength is the distance from a point on a wave to the same point on an adjacent wave

Wave speed is the speed the wave is travelling at

Wave frequency is how many waves pass a fixed point in a given time period

6 0

3 years ago

What is the energy dissipated as a function of time in a circular loop of N turns of wire having a radius of r0 and a resistance

Snezhnost [94]

Explanation:

Let N be the number of turns in a circular loop having a radius of r₀ and a resistance R. The magnetic field is given by :

$B(t)=B_oe^{-\dfrac{t}{\tau}}$

The induced emf in the circular coil is given by :

$\epsilon=\dfrac{-d\phi}{dt}$

Where

$\phi=BA$

$\epsilon=N\dfrac{-d(BA)}{dt}$

$\epsilon=NAB_o\dfrac{-d(e^{-\dfrac{t}{\tau}})}{dt}$

$\epsilon=\dfrac{NAB_o}{\tau}e^{-t/\tau}$

Power dissipated is given by :

$P=\dfrac{\epsilon^2}{R}$

$P=\dfrac{(\dfrac{NAB_o}{\tau}e^{-t/\tau})^2}{R}$

$P=(\dfrac{NAB_o}{\tau})^2\dfrac{e^{-2t/\tau}}{R}$

Energy dissipated in the circuit is given by :

$E=\int\limits^T_0 {P.dt}$

$E=\int\limits^T_0 {(\dfrac{NAB_o}{\tau})^2\dfrac{e^{-2t/\tau}}{R}.dt}$

$E=\dfrac{1}{R}(\dfrac{NAB_o}{\tau})^2\int\limits^T_0 {e^{-2t/\tau}.dt}$

$E=\dfrac{(N\pi r_o^2B_o^2)^2}{2R}{\tau(e^{2t/\tau}-1)}{}$

Hence, this is the required solution.

7 0

3 years ago

Is The force of friction always opposite to the motion?

Taya2010 [7]

Answer:

Friction force always acts tangent to the surface at points of contact. Friction force acts opposite to the direction of motion.

Explanation:

8 0

4 years ago

What is the centripetal force

Lelechka [254]

Answer:90N

Explanation:

Mass=30kg

Centripetal acceleration=3m/s^2

centripetal force=mass x centripetal acceleration

Centripetal force=30 x 3

Centripetal force =90

Centripetal force =90N

4 0

3 years ago