What makes us human?
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Which of the following statements is true about Planck's Law?. . A. The frequency of the emitted light is inversely proportional to the energy given off by the electrons.. . B.The frequency of the emitted light is directly proportional to the energy given off by the electrons.. . C. The wavelength of the emitted light is directly proportional to the energy given off by the electrons.. .D. The wavelength of the emitted light is inversely proportional to the energy given off by the electrons.
Anyone get this if you do please help me step by step
A mass is stretched 4 centimeters from the equilibrium position of a spring. If the displacement is doubled, what can be concluded about the restoring force?
A business letter style that shows all text aligned to the left side of the page is calleda. full block.b. left block.c. justified block.d. modified block.
doldrums
polar easterlies
trade winds
horse latitudes
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Answer:
doldrums
Explanation:
Just need to type something more to be able to post
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Answer:
The tension in the part of the cord attached to the textbook is 6.58 N.
Explanation:
Given that,
Mass of textbook = 2.09 kg
Diameter = 0.190 m
Mass of hanging book = 3.08 kg
Distance = 1.26 m
Time interval = 0.800 s
Suppose,we need to calculate the tension in the part of the cord attached to the textbook
We need to calculate the acceleration
Using equation of motion
Put the value into the formula
We need to calculate the tension
When the book is moving with acceleration
Using formula of tension
Hence, The tension in the part of the cord attached to the textbook is 6.58 N.
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Answer:
No, the apple will reach 4.20041 m below the tree house.
Explanation:
t = Time taken
u = Initial velocity = 2.8 m/s
v = Final velocity = 0
s = Displacement
g = Acceleration due to gravity = -9.81 m/s² = a (negative as it is going up)
Equation of motion
The height to which the apple above the point of release will reach is 0.39959 m
From the ground the distance will be 1.3+0.39959 = 1.69959 m
Distance from the tree house = 5.9-1.69959 = 4.20041 m
No, the apple will reach 4.20041 m below the tree house.
The values in the option do not reflect the answer.
Final answer:
The apple will not reach the friend in the tree house as it will only reach a height of approximately 1.527 m.
Explanation:
To determine whether the apple will reach a friend in a tree house 5.9 m above the ground, we can use the equations of motion. Since the apple is thrown vertically upward, it will experience a negative acceleration due to gravity. Using the equation h = vo*t + (1/2)*a*t^2, where h is the final height, vo is the initial velocity, a is the acceleration, and t is the time, we can calculate the time it takes for the apple to reach a height of 5.9 m. Plugging in the values, we get:
5.9 = 2.8*t + (1/2)*(-9.81)*t^2
Simplifying the equation, we have:
-4.905*t^2 + 2.8*t - 5.9 = 0
Using the quadratic formula, we can solve for t. The quadratic formula is t = (-b ± sqrt(b^2 - 4ac)) / (2a), where a = -4.905, b = 2.8, and c = -5.9.
Plugging in the values, we get:
t = (-2.8 ± sqrt(2.8^2 - 4*(-4.905)*(-5.9))) / (2*(-4.905))
After evaluating the formula, we find that the apple will take approximately 1.527 seconds to reach a height of 5.9 m. Since the apple continues to rise after reaching this height, it will not reach the friend in the tree house.
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In this case the gravitational potential energy added is that as a result of the change in height.
= mgΔh g ≈ 9.8m/s²
= mg(h₂ - h₁)
= 4*9.8*(1.4 - 1.2)
= 7.84J
GPE added = 7.84J
Answer:
7.84 J
Explanation:
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(-20) / (the object's mass).
Call it a crazy hunch, but I can't shake the feeling that there was more
to the question before the part you copied, that mentioned the object's
mass, and its velocity before this force came along.
Isaac Newton
Johannes Kepler
Tycho Brahe