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2 years ago

Which process generates energy in the Sun?1) nuclear fusion2) nuclear fission3) chain reaction4) transmutation

Physics

1 answer:

Ber [7]2 years ago

5 0

1) nuclear fusion

During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. During this process, radiant energy is released.

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For a sine wave depicting simple harmonic motion, the smaller the amplitude of the wave, the smaller the of the pendulum from th

stiks02 [169]

Displacement , shorter

7 0

4 years ago

Read 2 more answers

What is the relationship between the mass of an object and the amount of force required to drag it across the table?

hammer [34]

Answer:

Force = mass × acceleration

Explanation:

The amount of force required to drag the object across the table is the product of the mass of the object and acceleration

6 0

3 years ago

Take the regular compass and hold it so the case is vertical. Now use it to investigate the direction of the coil’s magnetic fie

Sliva [168]

Answer:

Please find the answer in the explanation

Explanation:

Take the regular compass and hold it so the case is vertical. Now use it to investigate the direction of the coil’s magnetic field at locations other than the central axis.

What happens as you move away from the center axis toward the coil? The direction of the magnetic compass needle will move in an opposite direction since the direction of the induced voltage is reversed.

What happens above the coil?

the needle on the magnetic compass will be deflected. Since compasses work by pointing along magnetic field lines

Outside the coil? The magnetic compass needle will experience no deflection. Since there is no induced voltage or current.

Below the coil?

The needle will move in an opposite direction.

3 0

3 years ago

A computer hard disk starts from rest, then speeds up with an angular acceleration of 190 rad/s2rad/s2 until it reaches its fina

Otrada [13]

Answer:

962 rpm.

Explanation:

given,

angular acceleration = 190 rad/s²

initial angular speed = 0 rad/s

final angular speed = 7200 rpm

= $7200\times\dfrac{2\pi}{60}$

= $754\ rad/s$

we need to calculate the revolution of disk after 10 s.

time taken to reach the final angular velocity

using equation of angular motion

$\omega_f - \omega_i = \alpha t$

$754 - 0 =190\times t$

t = 4 s

rotation of wheel in 4 s

$\theta =\omega_i t+ \dfrac{1}{2}\alpha t$

$\theta = \dfrac{1}{2}\alpha t^2$

$\theta = \dfrac{1}{2}\times 190 \times 4^2$

θ = 1520 rad

$\theta = \dfrac{1520}{2\pi}$

$\theta =242\ rev$

now, revolution of the disk in next 6 s

angular velocity is constant

$\omega_f = \dfrac{\theta_f-\theta_i}{t_f-t_i}$

$754 = \dfrac{\theta_f-1520}{10-4}$

θ_f = 6044 rad

θ_f = $\dfrac{6044}{2\pi}$

revolution of the computer hard disk

θ_f = 962 rpm.

total revolution of the computer disk after 10 s is equal to 962 rpm.

3 0

3 years ago

What is the main difference between macroscopic kinetic energy in a motion and microscopic kinetic energy of individual molecule

labwork [276]

Answer:

Explained

Explanation:

1.The macroscopic form of kinetic energy is organized whereas the microscopic kinetic energy disorganized form of energy.

2.Observing macroscopic kinetic energy is easier than the microscopic energy.

3. All macroscopic kinetic energy can be converted to useful work whereas microscopic kinetic energy can not be.

4. Macroscopic kinetic energy is possessed by moving objects whereas microscopic objects possessed by the virtue of motion, rotation, vibrations of atoms in substance.

Wind energy is macroscopic energy as it can be harnessed to produce electricity and perform some useful work. And discussed above useful work can only be performed using macroscopic kinetic energy.

8 0

3 years ago