________ occurs when an electric current is made by a changing magnetic field

Please help

V125BC [204]

Answer:

her arm when she is throwing it

Explanation:

because that is the action

7 0

3 years ago

Can someone help me please

Semenov [28]

Answer:

distance and time

Explanation:

like miles per hour, its the measure of how far something went durind a span of time, hours.

6 0

3 years ago

A 620 nm light falls on a photoelectric surface and electrons with the maximum kinetic energy of 0.14 eV are emitted. (a) Determ

nevsk [136]

Answer:

(a) The work function is 1.86 eV.

(b) The cut off frequency is 450 THz.

(c) The stopping potential is 1.16 V.

Explanation:

incident wavelength = 620 nm

Kinetic energy, K = 0.14 eV

According to the photoelectric equation

E = W + KE

where, W is the work function, KE is the kinetic energy.

(a) Let the work function is W.

$W = E - KE\\W = \frac{h c}{\lambda }- KE\\W =\frac{6.63\times 10^{-34}\times3\times 10^{8}}{620\times 10^{-9}\times 1.6\times 10^{-19}}-0.14\\\\W =1.86 eV$

(b) Let the cut off frequency is f.

W = h f

$1.86\times 1.6\times 10^{-19} = 6.63\times 10^{-34}\times f\\f = 4.5\times 10^{14} Hz =450 THz$

(c) Let the stopping potential is V.

$E = W + eV\\\frac{6.63\times 10^{-34}\times 3\times 10^{8}}{420\times 10^{-9}\times 1.6\times 10^{-19}}=1.8 + eV\\\\V = 1.16 V$

3 0

3 years ago

On top of a 3 m tall shelf sits a lonely 4.5 kg toy snake. How much GPE does this snake have if the shelf is on Earth? (g = 9.8

Readme [11.4K]

Answer:

GPE = Mgh = 132J

Explanation:

Mgh

4.5×9.8×3

132J

8 0

2 years ago

Why does the moons gravity affect the earth so much

Licemer1 [7]

One main reason is, <span>The Moon's gravity pulls on Earth's oceans and distorts them, causing tides</span>

7 0

3 years ago

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