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4 years ago

Question regarding Compton Scattering:

Physics

1 answer:

Shalnov [3]4 years ago

4 0

(((2)(0.1385*10^{-9})(6.626*10^{-34})(3*10^8))
---------------------------------------------------------------
(((2)(6.626*10^{-34})(3*10^8))-((9.11*10^{-31})(8.9*10^6)^2(0.1385*10^{-9})))

= 1.42072 x 10^-10

See attachment to properly view the equation. An application was used for easier computation.

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A 62.6-kg skateboarder starts out with a speed of 2.18 m/s. He does 113 J of work on himself by pushing with his feet against th

n200080 [17]

Answer:

a. Wgra=786.09J

b. 1.28m

Explanation:

The change in the potential energy is the work done by the gravitational force.

For this problem you have to take into account that the total work done is given by the change in the kinetic energy

$W_{tot}=\Delta E_k=\frac{m}{2}(v_f^2-v_0^2)\\W_{tot}=\frac{62.6kg}{2}((6.55\frac{m}{s})^2-(2.18\frac{m}{s})^2)=1194.09J$

Furthermore the total work is the contribution of the work done by the skater, the gravitational force and the friction

$W_{tot}=W_{ska}+W_{fric}+W_{gra}$

(a) by separating Wfric you have

$W_{gra}=W_{tot}-W_{fric}-W_{ska}=1194.09J-295J-113J=786.09J$

(b) It is only necessary to use the expression for the work done by gravitational force

$W_{grav}=mgh\\h=\frac{W_{grav}}{mg}=\frac{786.09J}{(62.6kg)(9.8\frac{m}{s^2})}=1.28m$

HOPE THIS HELPS!!

6 0

3 years ago

Cooling systems, such as air conditioners and refrigerators, transfer thermal energy in order to keep homes and cars cool or to

Lubov Fominskaja [6]

Answer: I think maybe thru Convection?

Explanation:

cause convection causes the heat to stay to the top and the cold air stay's to the bottom so maybe i would say Convection.... Is there any answer choices?

8 0

4 years ago

The electric force between two charged objects depends on which of the following

emmainna [20.7K]

<span>The electric force between two charged objects depends on
the product of their charges and the distance between them.</span>

6 0

3 years ago

Read 2 more answers

A quality of the substance that never changes and can be used to identify the substance

astraxan [27]

Uhh Physical property I think

4 0

3 years ago

Two stones are thrown vertically upward from the ground, one with three times the initial speed of the other. Assume free fall.

maw [93]

A) Vf = Vo - g*t
Vf = 0
g = 9.8 m/s^2

Vo = g* t => t up = Vo / g

t total = 2*t = 2*Vo / g

t slow = 2*Vo / g

t fast = 2*[3Vo] / g = 6Vo / g => Vo = g * t fast / 6 = 9.8 m/s^2 * 8.00 s / 6 = 13.07 m/s = Vo

t slow = 2 * 13.07 m/s / 9.8 m/s^2 = 2.67 s.

B)

Vf ^2 = Vo ^2 - 2gy

Vf = 0 => Vo ^2 = 2gy

Vo ^2 = 2gH

[3Vo]^2 = 2gy

=> [3Vo]^2 / Vo^2 = 2gy / 2gH
=> 9 = y/H => y = 9H

6 0

3 years ago