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Serggg [28]
3 years ago
6

A 70-kg boy is sitting 3 m from the ground in a tree. What is his gravitational potential energy

Physics
1 answer:
steposvetlana [31]3 years ago
7 0

m x h x 9.8 m/s squared

70 kg x 3 m x 9.8 m/s squared= 2058 Joules

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Calculate the most probable speed of an ozone molecule in the stratosphere
Marysya12 [62]

Answer:

v_{mp}=305.83 m/s

Explanation:

The temperature in stratosphere is generally about 270 K

molecular weight of an ozone molecule = 48 gm/mole

now formula for most probable velocity

v_{mp}= \sqrt{\frac{2RT}{M} }

plugging the values we get

v_{mp}= \sqrt{\frac{2\8.314\times270}{48} }

v_{mp}=305.83 m/s

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3 years ago
What does the Pauli exclusion principle state? . . A.Electrons will be added to an atom at the lowest possible level or sublevel
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The Pauli exclusion principle state that : D. Two electrons occupy the same orbital only if they have opposite spins

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3 years ago
How fast is Barry Allen ( The Flash) in season 5 of the Flash?
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Answer:  The Flash, Allen's top speed is Mach 3.3, or 2,532 miles per hour.

Explanation:

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2 years ago
Which is an example of reflection
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Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. Mirrors exhibit specular reflection.

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2 years ago
A bus contains a 1440 kg flywheel (a disk that has a 0.63 m radius) and has a total mass of 10200 kg. Calculate the angular velo
CaHeK987 [17]

Answer:\omega =93.51 rad/s

Explanation:

Given

mass of Flywheel m_1=1440 kg

mass of bus m_b=10200 kg

radius of Flywheel r=0.63 m

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Conserving Energy i.e.

0.9(Rotational Energy of Flywheel)= change in Kinetic Energy of bus

Let \omegabe the angular velocity of Flywheel

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0.9\cdot \frac{571.536\cdot \omega ^2}{2}=\frac{10200\cdot 21^2}{2}

\omega ^2=21^2\times \frac{10200}{0.9\times 571.536}

\omega =21\times 4.45=93.51 rad/s

8 0
3 years ago
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