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Vsevolod [243]
3 years ago
13

What is not a example of potiential energy

Physics
2 answers:
Alexxx [7]3 years ago
8 0
A marble rolling. Potential energy is when something is staying still.
grin007 [14]3 years ago
3 0

Answer:

when an object is moving

Explanation:

it turns into kinetic energy

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In an X-ray photoelectron experiment, a photon of wavelength 121 pm ejects an electron from the inner shell of an atom and it em
pentagon [3]

Answer:

binding energy will be 0.1633\times 10^{-15}J

Explanation:

We have given wavelength of photon \lambda =121pm=121\times 10^{-12}m

Velocity of light c=3\times 10^8m/sec

Plank's constant h=6.6\times 10^{-34}Js

So energy of photon E=\frac{hc}{\lambda }=\frac{6.6\times 10^{-34}\times 3\times 10^8}{121\times 10^{-12}}=1.636\times 10^{-15}J

Mass of electron m=9.1\times 10^{-31}kg

Velocity of electron is given v=56.9\times 10^6m/sec

So kinetic energy of electron KE=\frac{1}{2}mv^2=\frac{1}{2}\times 9.1\times 10^{-31}\times (56.9\times 10^6)^2=1.473\times 10^{-15}J

So binding energy = plank's energy - kinetic energy

=1.636\times 10^{-15}-1.473\times 10^{-15}=0.1633\times 10^{-15}J

So binding energy will be 0.1633\times 10^{-15}J

4 0
4 years ago
Which of the following statements about the electromagnetic spectrum is true?
Andre45 [30]

Answer:

B. its consist of waves of varying lengtu

6 0
3 years ago
True or false the law of coservation of charge states that charge is neither created nor destroyed but transferred from one obje
Hoochie [10]
True, charge can not be created or destroyed, only transferred
8 0
4 years ago
James Bond is trying to escape his enemy on a speedboat but
SVEN [57.7K]

Answer:

100 m/s

Explanation:

Mass the mass of Bond's boat is m₁. His enemy's boat is twice the mass of Bond's i.e. m₂ = 2 m₁

Initial speed of Bond's boat is 0 as it won't start and remains stationary in the water. The initial speed of enemy's boat is 50 m/s. After the collision, enemy boat is  completely stationary. Let v₁ is speed of bond's boat.

It is the concept of the conservation of momentum. It remains conserved. So,

m_1u_1+m_2u_2=m_1v_1+m_2v_2

Putting all the values, we get :

0+(2m_1)50=m_1v_1+(2m_2)(0)\\\\100m_1=m_1v_1\\\\v_1=100\ m/s

So, Bond's boat is moving with a speed of 100 m/s after the collision.

3 0
4 years ago
Galileo was the first scientist to do which of the following?
MA_775_DIABLO [31]
He was the first to improve the telescope i believe 
3 0
3 years ago
Read 2 more answers
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