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3 years ago

NEED ANSWER ASAP

Physics

2 answers:

neonofarm [45]3 years ago

6 0

Answer:

The answer is A

Explanation:

My students take USA Test Prep and I have made this question for it

kramer3 years ago

4 0

The answer is B. Mobil Oil Company would make money off of the drilling, and independent researchers would help create an unbiased opinion.

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The city council is discussing whether or not to put fluoride in the city's water supply. Many other towns add it already, but y

earnstyle [38]

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For anyone who needs this answer in the future the answer is "The government agency responsible for monitoring water safety"

Explanation:

I took the quiz and got it right! It is that answer because the people who's profession is monitoring water safety would be the most reliable to ask this question. Hope this helps.

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4 years ago

A student is asked to determine the work done on a block of wood when the block is pulled horizontally using an attached string.

Lerok [7]

Answer:

D. Graphing the force as a function of distance and calculating the area under the curve.

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4 years ago

Read 2 more answers

A flat loop of wire consisting of a single turn of cross-sectional area 8.20 cm2 is perpendicular to a magnetic field that incre

olga nikolaevna [1]

Answer:

The induced current is $I = 6.25*10^{-4} \ A$

Explanation:

From the question we are told that

The number of turns is $N = 1$

The cross-sectional area is $A = 8.20 cm^2 = 8.20 * 10^{-4} \ m^2$

The initial magnetic field is $B_i = 0.500 \ T$

The magnetic field at time = 1.02 s is $B_t = 2.60 \ T$

The resistance is $R = 2.70\ \Omega$

The induced emf is mathematically represented as

$\epsilon = - N * \frac{ d\phi }{dt}$

The negative sign tells us that the induced emf is moving opposite to the change in magnetic flux

Here $d\phi$ is the change in magnetic flux which is mathematically represented as

$d \phi = dB * A$

Where dB is the change in magnetic field which is mathematically represented as

$dB = B_t - B_i$

substituting values

$dB = 2.60 - 0.500$

$dB = 2.1 \ T$

Thus

$d \phi = 2.1 * 8.20 *10^{-4}$

$d \phi = 1.722*10^{-3} \ weber$

$|\epsilon| = 1 * \frac{ 1.722*10^{-3}}{1.02}$

$|\epsilon| = 1.69 *10^{-3} \ V$

The induced current i mathematically represented as

$I = \frac{\epsilon}{ R }$

substituting values

$I = \frac{1.69*10^{-3}}{ 2.70 }$

$I = 6.25*10^{-4} \ A$

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4 years ago

I need help if anybody is in physics

Greeley [361]

Explanation:

A B to c I'm gurzsibg it q corenticle question

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3 years ago

What is the voltage in a circuit with a resistance of 12 ohms and a current of 20 amp?

mr Goodwill [35]

U = I × R = 20A × 12 Ohm =240V

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3 years ago