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4 years ago

In which layer can air temperatures reach 1,800c

Physics

1 answer:

Mumz [18]4 years ago

4 0

I believe it’s the thermosphere.

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A friend returns to the United states from Europe with a 960 W coffee maker, designed to operate from a 240 V line. What can she

Paladinen [302]

Answer:

$\frac{N_2}{N_1}= 2$

Explanation:

From the question we are told that:

Power $W=960W$

Voltage $V=240v$

USA-standard $V_{usa}=120 V$

Applying A step down transformer

Generally the equation for a Transformer is mathematically given by

$\frac{v_2}{v_1}c=\frac{N_2}{N_1}$

$\frac{N_2}{N_1}=\frac{240}{120}$

$\frac{N_2}{N_1}= 2$

Therefore

She can use a turns ratio of 2

8 0

3 years ago

A diagram that shows thermal energy being released by objects is called a ______.

coldgirl [10]

The answer is a Thermogram.

I just took the test :)

3 0

3 years ago

Read 2 more answers

Different bettwen a pair of scissors and nail cutter <br>

Komok [63]

Answer:

One is for hair, paper and other things, the other is for nails.

4 0

3 years ago

How can recycling impact the environment

brilliants [131]

Answer:

A. It uses less energy to make something from recycled materials than from new materials.

Explanation:

I think it is this one because it is the only one that is not harmful to the environment. Also, I took the test a few minutes ago.

4 0

4 years ago

A Ferris wheel has radius 5.0 m and makes one revolution every 8.0 s with uniform rotation. A person who normally weighs 670 N i

DaniilM [7]

Answer:

The apparent weight of the person as she pass the highest point is $N = 458.8 \ N$

Explanation:

From the question we are told that

The radius of the Ferris wheel is $r = 5.0 \ m$

The period of revolution is $T = 8.0 \ s$

The weight of the person is $W = 670 \ N$

Generally the speed of the wheel is mathematically represented as

$v = \frac{2 \pi r}{T }$

substituting values

$v = \frac{2 * 3.142 * 5}{8 }$

$v = 3.9 3 \ m/s$

The apparent weight (the normal force exerted on her by the bench) at the highest point is mathematically evaluated as

$N = mg - \frac{mv^2}{r}$

Where m is the mass of the person which is mathematically evaluated as

$m = \frac{W}{g}$

substituting values

$m = \frac{670}{9.8}$

$m = 68.37 \ kg$

$N = 68.37 * 9.8 - \frac{68.37 * {3.93}^2}{5}$

$N = 458.8 \ N$

5 0

3 years ago