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Ket [755]
3 years ago
15

If the photon scatters in the backward direction, what is the magnitude of the linear momentum of the electron just after the co

llision with the photon
Physics
1 answer:
Strike441 [17]3 years ago
8 0
Momentum is a vector quantity, and is always conserved. Whenever a collision occurs between two objects, the objects behave under the principle of conservation of momentum. Therefore, if an object moves in the direction opposite to its original direction after a collision, then this indicates that the momentum of the colliding object was greater than the object under consideration. 
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A movie stunt driver on a motorcycle speeds horizontally off a 50.0 m high cliff. how fast must the motorcycle leave the cliff-t
Marina86 [1]
This is a projectile motion problem, so, we use the formula for trajectory:

y =xtanα + gx^2/2v^2(cosα)^2

where 
y is the vertical distance (y = 50 m)
x is the horizontal distance (x=90 m)
α is the angle of trajectory; since it levels of HORIZONTALLY, α = 0°
v is the initial velocity 
g is the acceleration due to gravity which is 9.81 m/s^2

Substituting to the formula,

50 =90tan(0°) + (9.81)(90)^2/2v^2(cos0°)^2
v = 28.2 m/s 
8 0
3 years ago
Read 2 more answers
A parallel-plate air capacitor is connected to a constant-voltage battery. If the separation between the capacitor plates is dou
Oliga [24]

Answer:

Drop to half of the previous value

Explanation:

Energy stored in capacitor is inversly propotional to the distance between the plates.

3 0
4 years ago
How much heat is released when 432 g of water cools down from 71'c to 18'c?
maria [59]
The heat released by the water when it cools down by a temperature difference \Delta T is
Q=mC_s \Delta T
where
m=432 g is the mass of the water
C_s = 4.18 J/g^{\circ}C is the specific heat capacity of water
\Delta T =71^{\circ}C-18^{\circ}C=53^{\circ} is the decrease of temperature of the water

Plugging the numbers into the equation, we find
Q=(432 g)(4.18 J/g^{\circ}C)(53^{\circ}C)=9.57 \cdot 10^4 J
and this is the amount of heat released by the water.
7 0
3 years ago
How many centimeters are there in a stick 3.4 meters long?
levacccp [35]

Answer:

It's 340 centimeters.

Explanation:

Multiply it by 100

4 0
2 years ago
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What is the distance from the crest to the equilibrium of a wave called? A. amplitude B. period C. frequency D. phase
Goryan [66]

its the first one. A.

8 0
3 years ago
Read 2 more answers
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