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AleksandrR [38]
3 years ago
10

Sayid made a chart listing data of two colliding objects.

Physics
1 answer:
Artemon [7]3 years ago
7 0

Answer:

velocity of combined objects is 6 m/s

Explanation:

As per law of conservation of momentum

total momentum before collision = total momentum after collision

since the two objects sticks together after collision so we will have

m_1v_{1i} + m_2v_{2i} = (m_1 + m_2) v

Now plug in all values in it

300(10) + 100(-6) = (300 + 100) v

3000 - 600 = 400(v)

2400 = 400 v

v = 6 m/s

so the missing value in the table is velocity which is 6 m/s

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A 0.700-kg particle has a speed of 1.90 m/s at point circled A and kinetic energy of 7.20 J at point circled B. (a) What is its
Savatey [412]

Answer:

a). E_{kA}=1.2635 J

b). V_{B}=4.535\frac{m}{s}

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Explanation:

ΔE=kinetic energy

a).

E_{kA}=\frac{1}{2}*m*v_{A} ^{2} \\ v_{A}=1.9 \frac{m}{s}\\ m=0.70kg\\E_{kA}=\frac{1}{2}*0.70kg*(1.9 \frac{m}{s})^{2} \\E_{kA}=1.2635 J

b).

E_{kB}=\frac{1}{2}*m*v_{B} ^{2}

V_{B}^{2}=\frac{E_{kB}*2}{m} \\V_{B}=\sqrt{\frac{E_{kB}*2}{m}} \\V_{B}=\sqrt{\frac{7.2J*2}{0.70kg}} \\V_{B}=4.53 \frac{m}{s}

c).

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3 0
3 years ago
What's the formula to find out power
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In general, 

                 Power = (energy moved) / (time to move the energy) .

If it's mechanical power, then     

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If it's electrical power, then it can be any one of these:

                 Power  =  (volts)  x  (amperes)

                 Power  =  (volts)²  /  (resistance, ohms)

                 Power  =  (amperes)²  x  (resistance, ohms) .

Whatever kind of energy you're dealing with, power always
turns out to be

                  (amount of energy produced, used, or moved)
divided by
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3 0
2 years ago
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Andreyy89
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Use the following half-life graph to answer the following question:
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Answer:

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