Answer:
λ = 65.6 pm
Explanation:
Given that
λo = 65 pm
The initial energy of the electron

Now by putting the values




Eo=19.06 KeV
Given that kinetic energy KE= 0.84 KeV
Therefore the final energy
E= Eo - KE
E = 19.06 - 0.84 KeV
E= 18.22 KeV
The wavelength λ can be find as



λ = 6.56 x 10⁻¹¹ m
λ = 65.6 pm
Answer:
The speed of the top of the wheel is twice the speed of the car.
That is: 72 m/s
Explanation:
To find the speed of the top of the wheel, we need to combine to velocities: the tangential velocity of the rotating wheel due to rotational motion
- with
being the wheel's angular velocity,
plus the velocity due to the translation of the center of mass (v = 36 m/s).
The wheel's angular velocity (in radians per second) can be obtained using the tangential velocity for the pure rotational motion and it equals:
Then the addition of these two velocities equals:

The answer is D, they reproduce quickly.
Because it occurs frequently and its does not cause as much damage as boloni
waves are emitted by all objects but not visible to humans
the hotter the object, the more it emits
wave speed=frequency x wavelength
the higher the frequency, the shorter the wavelength.
the larger the amplitude, the greater the energy of the wave.
diffraction is when waves pass through a gap and spread out.
the longer the wavelength, the greater the diffraction.
electromagnetic waves transfer energy. examples are :gamma, x-ray, UV, visible light, infrared radiation, microwave and radio.
got these facts out of my physics book, hope they help :)