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Oduvanchick [21]
3 years ago
5

A circuit has a voltage drop of 12.0 V across a 30.0 resistor that carries a current of 0.400 A. What is the power used by the r

esistor? Use P = VI.
A. 360.0 W
B. 12.0 W
C. 4.80 W
D. 57.0 W
Physics
2 answers:
Aloiza [94]3 years ago
7 0

Option ( c ) is correct.

Using the formula for power

P= i^2 R

P= power

i= current= 0.4 A

R= resistance= 30 ohm

so power= (0.4)² (30)

Power=4.8 W

Tcecarenko [31]3 years ago
6 0
P=VI
P=12.0×0.400
P=4.80 Watt
So C is right
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Answer:

C. The number of positive and negative charges can be the same.

Explanation:

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3 years ago
Balok diam diatas bidang miring pada sudut kemiringan 40° balok mulai bergerak,tentukan koefisien gesek statis antara balok dan
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Answer:

0.84

Explanation:

m = Massa balok

g = Percepatan gravitasi

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F=mg\sin\theta

Gaya gesekan diberikan oleh

f=\mu mg\cos\theta

Kondisi dimana balok mulai bergerak adalah ketika gaya balok akibat beratnya sama dengan gaya gesek pada balok.

mg\sin\theta=\mu mg\cos\theta\\\Rightarrow \mu=\dfrac{mg\sin\theta}{mg\cos\theta}\\\Rightarrow \mu=\tan\theta\\\Rightarrow \mu=\tan40^{\circ}\\\Rightarrow \mu=0.84

Koefisien gesekan statik antara balok dan bidang miring adalah 0.84.

7 0
3 years ago
Un alumno menciona que al abrir la ventana de su casa sintió cómo el frío ingresaba a su cuerpo. Menciona cuál es la verdadera r
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Answer:

My believe the answer is

A.) or B.)

Explanation:

Here is why I think A is the answer.

If we use the process of elimination, it would look like this,

a) Porque el aire tiene una temperatura menor que la de su cuerpo; por eso se propaga más rápido.

<em>This makes sense because we all know in winter the weather is very cold and freezing.</em>

b) Porque la temperatura de su cuerpo, siente el aire frio que entra por la ventana.

<em>I feel like this answer is the question, but it could also be an answer, sorry, I'm a little uncertain.</em>

c) Porque el calor de su cuerpo se propaga al medio ambiente, al ser la temperatura del niño mayor que la del aire exterior.

<em>This answer has nothing to do with the question, plus it is very false, our body heat is not enough to overcome the very cold temperature from outside.</em>

d) Porque la temperatura del aire es igual a la temperatura del cuerpo.

<em>This is false because again our body heat is not even compared to the freezing cold temperatures from the winter.</em>

<em />

<em />

<h2>Well, have a nice rest of the day!</h2><h3>ba baiii!</h3>
3 0
3 years ago
How long does it took for 1000-watt microwave oven to do 20000 joules of work
klio [65]

Answer:

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4 0
2 years ago
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Answer:10842.33m/s

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5 0
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