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Dahasolnce [82]
3 years ago
12

An 8 kg cat is running 4 m/s. How much kinetic energy does it have?

Physics
1 answer:
Zepler [3.9K]3 years ago
7 0

Answer: Kinetic energy = (1/2) (mass) (speed)²

Kinetic energy = (1/2) (8 kg) (4 m/s)² =

 

                                 (4 kg) (16 m²/s²) =

                                  64  (kg-m/s²) (m) = 64 newton-m = 64 joules

  (about 17.6 pounds)

Explanation:

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Anuta_ua [19.1K]

Answer:

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Explanation:

8 0
3 years ago
What is E of a hydrogen atom in the 3p state?
notsponge [240]

Answer:

E=-1.51 eV.

L=\hbar\sqrt{2}

Explanation:

The nth level energy of a hydrogen atom is defined by the formula,

E_{n}=-\frac{13.6}{n^{2} }

Given in the question, the hydrogen atom is in the 3p state.

Then energy of n=3 state is,

E_{n}=-\frac{13.6}{(3)^{2} }\\E_{n}=-1.51eV

Therefore, energy of the hydrogen atom in the 3p state is -1.51 eV.

Now, the value of L can be calculated as,

L=\hbar\sqrt{l(l+1)}

For 3p state, l=1

L=\hbar\sqrt{1(1+1)}\\L=\hbar\sqrt{2}

Therefore, the value of L of a hydrogen atom in 3p state is L=\hbar\sqrt{2}.

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7 0
3 years ago
What is the effective resistance of a car’s starter motor when 150 A flows through it as the car battery applies 12.0 V to the m
QveST [7]

Answer:

From ohms law,

V=IR

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4 years ago
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