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3 years ago

6

Suppose you are an electrician and have read from the ohmmeter that the actual value of this resistor is 80 W. Is the resistor d

efective or not? Explain your answer briefly.

1 answer:

lara31 [8.8K]3 years ago

4 0

Answer:

80 <em>B</em><em>r</em><em>i</em><em>e</em><em>f</em><em>l</em><em>y</em>

Explanation:

sorry yan lang po ang alam ko

<em>a</em><em>n</em><em>d</em><em> </em><em>t</em><em>h</em><em>a</em><em>n</em><em>k</em><em>s</em><em> </em><em>t</em><em>o</em><em> </em><em>p</em><em>o</em><em>i</em><em>n</em><em>t</em><em>s</em><em> </em><em>☺</em>

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Thomson's cathode ray experiment showed that:

riadik2000 [5.3K]

I believe the best option to go with will be option C. electrons are negatively charged

4 0

4 years ago

You are investigating the report of a UFO landing in an isolated portion of New Mexico, and encounter a strange object that is r

SIZIF [17.4K]

Answer: 5 m

Explanation:

We have the following data:

$I_{1}=0.11 W/m^{2}$ is the intensity of the sound at 7.5 m from the source

$r_{1}=7.5 m$ is the distance at which the intensity $I_{1}$ was measured

$I_{2}=1 W/m^{2}$ is the intensity of the sound at $r_{2}$ from the source

We have to find $r_{2}$

Since the object is radiating the signal uniformly in all directions, we can use the <u>Inverse Square Law for Intensity:</u>

$\frac{I_{1}}{I_{2}}=\frac{r_{2}^{2}}{r_{1}^{2}}$

Isolating $r_{2}$ :

$r_{2}=r_{1}\sqrt{\frac{I_{1}}{I_{2}}}$

$r_{2}=7.5 m\sqrt{\frac{0.11 W/m^{2}}{1 W/m^{2}}}$

$r_{2}=2.48 m$ This is the distance at which the intensity is the "threshold of pain"

Now, we have to substract this value to $r_{1}$ to find how much closer to the source can we move:

$r_{1}-r_{2}=7.5 m - 2.48 m=5.02 m \approx 5 m$

3 0

3 years ago

Read 2 more answers

2 1.1.4 Quiz: Introduction to Physical Science

Naily [24]

Answer:

A. 1 J= 1 kg•m²/s² :)

Explanation:

4 0

3 years ago

It a car travels 2km in 1 hour what is the speed

Trava [24]

Answer:

1.243 mph

Explanation:

7 0

3 years ago

If you know the amount of air pressure exerted on a tabletop, how can you calculate the force exerted on the tabletop? Multiply

babymother [125]

Answer:

Multiply the air pressure by the area of the tabletop.

Explanation:

The relationship between pressure, force and area is given by:

$p=\frac{F}{A}$

where in this case, p is the air pressure, F is the force exerted and A the area of the tabletop. By re-arranging the equation, we can solve for F, the force exerted:

$p=\frac{F}{A}\\p\cdot A=\frac{F}{A}\cdot A\\pA=F$

So, the correct answer is:

The force exerted on the tabletop can be found by multiplying the air pressure by the area of the tabletop.

7 0

4 years ago