4.266 m is the radius of the circular path the electron follows.
Given
Speed of electron (v) = 7.5 × 10⁶ m/s
Earth's Magnetic Field (B) = 1 × 10⁻⁵ T
We already know that
Mass of electron (m) = 9.1 × 10⁻³¹ kg
Charge on electron (q) = 1.6 × 10⁻¹⁹ C
According to the formula
Radius of circular path(r) = mass on electron × speed/ Charge × Magnetic field
Radius of circular path(r) = m × v/q × B
Put the values into the formula
r = 9.1 × 10⁻³¹ × 7.5 × 10⁶/ 1.6 × 10⁻¹⁹ × 10⁻⁵
On solving, we get
r = 4.266 m
Hence, 4.266 m is the radius of the circular path the electron follows.
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Answer: A, to inform people of when, how, and why to wash their hands.
Explanation: in the poster it shows when you should wash your hands, how you should wash your hands, and why its important to wash your hands! Please give brainliest!
Answer:
![emf=81.51\times 10^{-7} Volt](https://tex.z-dn.net/?f=emf%3D81.51%5Ctimes%2010%5E%7B-7%7D%20Volt)
Explanation:
Given that
I = a + b t
b = 14 A/s , h= 1 cm , w= 15 cm , L= 1.05 m
The magnitude of induced emf is given as follows
![emf=\dfrac{d\phi}{dt}](https://tex.z-dn.net/?f=emf%3D%5Cdfrac%7Bd%5Cphi%7D%7Bdt%7D)
![emf=\dfrac{\mu_o\times L}{2\times \pi}\times ln\dfrac{h+w}{h}\times \dfrac{dI}{dt}](https://tex.z-dn.net/?f=emf%3D%5Cdfrac%7B%5Cmu_o%5Ctimes%20L%7D%7B2%5Ctimes%20%5Cpi%7D%5Ctimes%20ln%5Cdfrac%7Bh%2Bw%7D%7Bh%7D%5Ctimes%20%5Cdfrac%7BdI%7D%7Bdt%7D)
I = a + b t
![\dfrac{dI}{dt}= b](https://tex.z-dn.net/?f=%5Cdfrac%7BdI%7D%7Bdt%7D%3D%20b)
Now by putting the values in the above equation we get
![emf=\dfrac{4\times \pi \times 10^{-7}\times 1.05}{2\times \pi}\times ln\dfrac{1+15}{1}\times 14](https://tex.z-dn.net/?f=emf%3D%5Cdfrac%7B4%5Ctimes%20%5Cpi%20%5Ctimes%2010%5E%7B-7%7D%5Ctimes%201.05%7D%7B2%5Ctimes%20%5Cpi%7D%5Ctimes%20ln%5Cdfrac%7B1%2B15%7D%7B1%7D%5Ctimes%2014)
![emf=81.51\times 10^{-7} Volt](https://tex.z-dn.net/?f=emf%3D81.51%5Ctimes%2010%5E%7B-7%7D%20Volt)
Thus the induce emf will be
![emf=81.51\times 10^{-7} Volt](https://tex.z-dn.net/?f=emf%3D81.51%5Ctimes%2010%5E%7B-7%7D%20Volt)
current . . . flow of electric charges
voltage . . . stored potential energy at the source of a circuit
resistance . . . opposition to the flow of electric current
arrowRight . . . a button on the computer keyboard that causes the cursor to move to the right on the screen when pushed
arrowRight . . . a button on the computer keyboard that causes the cursor to move to the right on the screen when pushed
arrowRight . . . a button on the computer keyboard that causes the cursor to move to the right on the screen when pushed
First and foremost, a photon is quantum of light. It is otherwise known as visible light and has a wavelength range of 400 to 700 nm. Moving waves are describable by their frequency (number of waves per second) and wavelengths.
A single photon can be considered unique from other photons only by its energy. In empty space (vacuum), all photons have the same speed or velocity.
The frequency of the electromagnetic vibration, we know as light, is given in units of Hertz. One hertz is equivalent to one vibration per second; it must be noted that the range of spectrum perceived by the eye extends from 4.3 x 10∧ 14 Hz in the red to about 7.5 x 10∧ 14 Hz in the violet.