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3 years ago

What is solar energy?

Physics

1 answer:

RoseWind [281]3 years ago

7 0

Solar energy is energy that is produced using the sun's rays.

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Definition of wave velocity

maksim [4K]

Answer:

Velocity = frequency * wave length

Explanation:

Wave velocity is the measure of how fast the wave is being transmitted to a particular direction.

velocity implies both speed and direction as we know.

The velocity of a wave is equal to the product of its wavelength and frequency

where

frequency - number of oscillations per unit time (measured in Hz)
wave length - distance between corresponding points of two consecutive waves (measured in meters)

3 0

3 years ago

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A car hits a wall with a force of 80 N and

ASHA 777 [7]

Formula for acceleration: A=Force/Mass
A=F/M
A=80N/4.5kg
A=17.7 m/s^2

Unit for A is meters per second (m/s^2)
Hope this helps :)

5 0

3 years ago

A neutron star is an extremely dense, rapidly spinning object that results from the collapse of a massive star at the end ofits

Westkost [7]

Answer:

(a). The rotational inertia is $5.72\times10^{39}\ kg m^2$

(b). The magnitude of the magnetic torque is $3.20\times10^{35}\ N-m$

Explanation:

Given that,

Mass of neutron $M_{n}= 13M_{s}$

Density of neutron $\rho=4.8\times10^{17}\ kg/m^3$

(a). We need to calculate the rotational inertia

Using formula of rotational inertia for sphere

$I=\dfrac{2}{5}MR^2$ ...(I)

We know that,

$\rho=\dfrac{M}{V}$

Put the value of volume

$\rho=\dfrac{3M_{n}}{4\pi R^3}$

$R^2=(\dfrac{3M_{n}}{4\pi\rho})^{\frac{2}{3}}$

Put the value of R in equation (I)

$I=\dfrac{2}{5}\times M_{n}\times(\dfrac{3M_{n}}{4\pi\rho})^{\frac{2}{3}}$

Put the value into the formula

$I=\dfrac{2}{5}\times(13\times2\times10^{30})^{\frac{5}{3}}\times(\dfrac{3}{4\pi\times(4.8\times10^{17})})^{\frac{2}{3}}$

$I=5.72\times10^{39}\ kg m^2$

The rotational inertia is $5.72\times10^{39}\ kg m^2$ .

(b). We need to calculate the magnitude of the magnetic torque

Using formula of torque

$\tau=I\times \alpha$

Put the value into the formula

$\tau=5.72\times10^{39}\times5.6\times10^{-5}$

$\tau=3.20\times10^{35}\ N-m$

The magnitude of the magnetic torque is $3.20\times10^{35}\ N-m$

Hence, (a). The rotational inertia is $5.72\times10^{39}\ kg m^2$

(b). The magnitude of the magnetic torque is $3.20\times10^{35}\ N-m$

4 0

3 years ago

What is the maximum frequency of visible light in hertz?

Nataliya [291]

All frequencies of light in hertz are in between
$Red = 4 * 10 ^{14} Hz$ and
$Violet = 8 * 10 ^{14} Hz$

Light with a lower frequency than 4 * 10^14 Hz, are called infrared and can't be seen by human eye. Light with a higher frequency than 8 * 10^14 Hz, are called ultraviolet and can't bee seen by human eye.

Therefore, the maximum frequency of visible light in Hz, is 8 * 10^14 Hz

3 0

4 years ago

What is the heaviest planet in the worlx

Sever21 [200]

The heaviest planet in the world is Jupiter!

7 0

3 years ago

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