Answer: 2 days = 172,800 seconds
Explanation: 1 day is equal to 86,400 seconds so 2 days equal to 86,400 x 2 = 172,800 seconds.
Answer:
fem = 0
Explanation:
The electromotive force is given by Faraday's law
fem = - d / dt
where \phi _{B} is the flux of the magnetic field
The low magnetic flux is
\phi _{B} = B. A = B A cos θ
substituting
fem - d (B A cos θ) / dt
therefore for an electromotive force to exist there must be a change with respect to the time of
* The magnetic field
* The area waxed by the loop
* the angle between the magnetic field and the normal loop
* Any combination of the above
In this case, as the generator is stopped (inactive), there is no change in the parameters, therefore the electromotive force is zero (fem = 0).
Answer:
Correct answer is option C (Brahe and Kepler.)
Explanation:
Copernican model
Copernican model is also known as heliocentric model. According to Copernican model planets rotate around the Sun in an orbit, and earth is orbited by the Moon. Also sun is stationary and it lies at the center of the universe and stars also do not move.
Brahe supported the Copernican model but he rejected the idea that earth moves.
Kepler's also supported Copernican model and In his book "the Mysterium Cosmographicum" Kepler appreciated Copernican model. like Kepler also believed in heliocentric model not in geocentric one.
Answer:
E = 12640.78 N/C
Explanation:
In order to calculate the electric field you can use the Gaussian theorem.
Thus, you have:
ФE: electric flux trough the Gaussian surface
Q: net charge inside the Gaussian surface
εo: dielectric permittivity of vacuum = 8.85*10^-12 C^2/Nm^2
If you take the Gaussian surface as a spherical surface, with radius r, the electric field is parallel to the surface anywhere. Then, you have:
r can be taken as the distance in which you want to calculate the electric field, that is, 0.795m
Next, you replace the values of the parameters in the last expression, by taking into account that the net charge inside the Gaussian surface is:
Finally, you obtain for E:
hence, the electric field at 0.795m from the center of the spherical shell is 12640.78 N/C
Answer:
A police radar gun uses X-band microwave radiation at a frequency of 13.1 GHz. Microwaves travel at the speed of light, or 3x108 m/s. Since the frequency shift will be small for practical car speeds and difficult to detect, the shifted frequency is compared to the original frequency, and the resulting beat frequency is used to determine the speed of the car.
a.) If Michael is traveling at 29 m/s, what is the resulting beat frequency that the radar gun detects?
ANSWER: 2533 Hz
Explanation: