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pav-90 [236]
3 years ago
14

Help me with 4 please!!

Physics
1 answer:
Inessa [10]3 years ago
4 0

Answer:26

Explanation:

Trust me

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A series circuit has a voltage supply of 12 V and a resistor of 2.4 kΩ. How much power is dissipated by the resistor?
adell [148]

Answer:

(B) 0.06W

Explanation:

power absorbed by the resistor is given by \frac{V^2}{R}=I^2R

Where V = voltage

           R= resistance

            I =  current through the circuit

we have given V =12 Volt and resistance =2.4 K\Omega

current I=\frac{V}{R}=\frac{12}{2.4\times 1000}=5\times 10^{-3}A=5mA

power using voltage and resistance equation

p=\frac{12^2}{2.4\times 1000}=60mW =0.06W

using current equation P=I^2R=5^2\times 12=60mW= 0.06W

4 0
4 years ago
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Explanation:

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6 0
3 years ago
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An elevator accelerates upward at 2.0 m/s?,
amm1812

Answer:

Force the floor exerts on the  passenger is 833 N.

Explanation:

  • Weight of passenger (F_{g}) = mg = 85 × 9.8 N = 833 N
  • Force the floor exerts on the  passenger (F_{N}) = ?
  • For the elevator with the speed as 2.0 m/s the net force is zero, it means that the force is balanced.

                                       i.e. F_{N} = - F_{g} = -mg = 833 N

                                       hence  F_{N} is 833 N

  • If the lift was not at a constant speed i.e. if it had acceleration (m/s^{2})  then the case would be different.

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strojnjashka [21]
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3 0
3 years ago
Apply Pascal's law to a ketchup packet. Explain what will happen if you tear a small
vivado [14]

Answer:

its will explode because it's like a soda with baking soda added together and you shake it the small hole can make a huge explosion

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3 years ago
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