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ExtremeBDS [4]
3 years ago
15

If a photon has a frequency of 5.20 × 1014 hertz, what is the energy of the photon? Given: Planck's constant is 6.63 × 10-34 jou

le·seconds.
Physics
1 answer:
Virty [35]3 years ago
4 0
Answer:
E=h.f

=5.2×1014×6.63×10^-34

E=3.496×10^-30 J
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What net force acting on a 14 KG wagon produces an acceleration of 1.5 MS^2?
valentina_108 [34]

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To determine the height of a tall building such as Sears Tower in Chicago, Illinois a ball was dropped from the top of the build
Darya [45]

Answer:

The height of Sears Tower is 1448.5 feet.

Explanation:

<h3>We apply the free fall formula to the ball: </h3><h3>y=v_{o} *t+\frac{1}{2} *g*t^{2}</h3><h3>y: The vertical distance the ball moves at time t  </h3><h3>v_{o}i: Initial speed </h3><h3>g=Gravity acceleration=9.8*(\frac{\frac{1ft}{0.305m} }{s^{2} } )</h3>

Known information

We know that the vertical distance (y) that the ball moves in 9,5s  is equal to height of Sears Tower (h).  

Too we know that the ball is released from rest, then,v_{0}=0

Height of Sears Tower calculation:

We replace  in the equation 1 the data following;

y=h

v_{o} =0

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t= 9,5s

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Answer: The height of Sears Tower is 1448.5 ft

6 0
3 years ago
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