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Gnesinka [82]
3 years ago
5

A Boy can raise a load of 200N up to aheight of 2.5m in 15 seconds. calculate hispower​

Physics
1 answer:
shtirl [24]3 years ago
7 0

Explanation:

f=mg

=200×10

=200N

Now,

work done=df

25×200

=500J

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How much metabolic energy is required for a 68kg person to run at a speed of 15km/hr for 15min ?
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<span>What I have here is exactly the same problem, however, with the time changed to 19 mins:

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The light coming out of a concave lens:
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A 28-kg beginning roller skater is standing in front of a wall. By pushing against the wall, she is propelled backward with a ve
Scorpion4ik [409]

Answer:

33.6 Ns backward.

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3 0
3 years ago
You charge an initially uncharged 89.9-mf capacitor through a 30.5-ω resistor by means of a 9.00-v battery having negligible int
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(d/dt)V_capacitor </span>+ (V_capacitor/RC)​ = (V_source/<span>RC)​​</span>

<span>Where the time constant of the circuit is defined by the product of R*C

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2)
C<span>harge of the capacitor 1.57 time constants

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3) The charge after a very long time refers to the maximum charge the capacitor will hold in this circuit. This occurs when the voltage accross its terminals is equal to the voltage of the battery = 9V

Q (∞)  = 89.9mF*(9V) = 0.8091 C
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