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Darya [45]
3 years ago
9

A fire woman dropped a person onto the safety net. Right

Physics
1 answer:
dolphi86 [110]3 years ago
7 0

Answer:

m = 28.7[kg]

Explanation:

To solve this problem we must use the definition of kinetic energy, which can be calculated by means of the following equation.

E_{k}=\frac{1}{2}*m*v^{2}\\

where:

Ek = kinetic energy = 1800 [J]

m = mass [kg]

v = 11.2 [m/s]

1800=\frac{1}{2}*m*(11.2)^{2}\\m = 28.7[kg]

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Answer:

imma be honest I dint really know

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3 years ago
A circuit has a voltage drop of 54.0 V across a 30.0 o resistor that carries a current of 1.80 A. What is the power used by the
Blizzard [7]

Answer:

P = 97.2 W

Explanation:

Given that,

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We need to find the power used by the resistor. The formula used to find the power is given by :

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Putting all the values,

P = 54 V × 1.8 A

P = 97.2 W

So, the power used by the resistor is 97.2 W.

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3 years ago
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A 80 ohms resistor, 0.2 H inductance and 0.1 mF capacitor are connected in series across a generator (60 Hz, V rms=120 V). Deter
qaws [65]

Answer:

Impedance = 93.75 ohms

Current = 1.81 A

Explanation:

Resistance = R = 80 ohms

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Impedance = Z = \sqrt{R^{2} + (X_{L} - X_{C})^{^{2}}} =

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Voltage = \sqrt{2} × 120 = 169.7056 V

Current = I = V ÷ R = (169.7056) ÷ 93,747 = 1.81 A

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3 years ago
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Leno4ka [110]
The answer is D, talking more loudly or quietly.
<span>
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