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Ymorist [56]
3 years ago
8

A large electrical device is plugged into a 240-volt outlet and has a resistance of 160 ohms. How much power does the device use

.
A.38,000 watts
B.1.5 watts
C.360 watts
D.100 watts
E.0.67 watts
Physics
2 answers:
Darya [45]3 years ago
6 0
The answer is simple 360 watts
lubasha [3.4K]3 years ago
5 0
Yur answer is c.360 watts
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Answer: maximum height= 40.8m

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3 years ago
Two identical charges q placed 2.0 mapart exert forces of magnitude 4.0 N on each other What is the value of the charge q? a) q
katen-ka-za [31]

Answer:

c) 4.2*10^{-5}C

Explanation:

Coulomb's law says that the force exerted between two charges is inversely proportional to the square of distance between them, and is given by the expression:

F=\frac{kq_{1}q_{2}}{r^{2}}

where k is a proportionality constant with the value k=9*10^{9}\frac{Nm^{2}}{C^{2}}

In this case q_{1}=q_{2}=q, so we have:

F=\frac{kq^{2}}{r^{2}}

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kq^{2}=Fr^{2}

q^{2}=\frac{Fr^{2}}{k}

q=\sqrt{\frac{Fr^{2}}{k}}

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q=\sqrt{\frac{4.0N*(2.0m)^{2}}{9*10^{-9}\frac{Nm^{2}}{C^{2}}}}

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3 0
3 years ago
Suppose our apparatus will only allow us to distinguish the first order bright fringe from the central bright spot if they are s
ozzi

Answer:

λ = 8.716 mm

Explanation:

Given:

- d = 10 cm

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Find:

- Find the shortest wavelength of light for which this apparatus is useful

Solution:

- The formula that relates the split difference and angle of separation between successive fringes is given by:

                                            d*sin(Q) = n*λ

Where,

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m: order number.

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                                            d*sin(Q) = λ

                                            λ = 0.1*sin(5)

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3 0
3 years ago
1. what factor does work depends on?<br>2. what factor does power depends on? ​
Harrizon [31]
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5 0
2 years ago
Please left home at 8 AM to spend the day at in amusement park. He arrived at the park, which was 150 KM from his house, at 10 A
antiseptic1488 [7]

Answer:

v=\frac{150km}{2h}=75\frac{km}{h}

Explanation:

We can use the equation for the speed

v=\frac{x}{t}

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I hope this useful for you

regards

3 0
3 years ago
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