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3 years ago

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Physics

1 answer:

Anna71 [15]3 years ago

4 0

Answer:

The total resistance of the circuit = 188ohms

Explanation:

potential difference = 25volts

For resistors in series, equivalent resistance

Rt = R1 + R2 + R3

Rt = 120 + 18 + 50

Rt = 188ohms

The total resistance of the circuit = 188ohms

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Which of the following does not represent a significant negative environmental impact of using nuclear fuel? a. air pollution b.

sasho [114]

The answer is a. mining.

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3 years ago

A wire carries a current of 10 amps in a direction of 90 degrees with respect to the direction of an external magnetic field of

Oksi-84 [34.3K]

Answer:

15 N

Explanation:

The magnetic force on a piece of current-carrying wire is given by:

$F=ILB sin \theta$

where

I is the current in the wire

L is the length of the piece of wire

B is the magnetic field strength

$\theta$ is the angle between the direction of B and I

In this problem:

I = 10 A

B = 0.3 T

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$\theta=90^{\circ}$

Substituting into the equation, we find

$F=(10 A)(0.3 T)(5 m) sin 90^{\circ}=15 N$

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3 years ago

A spring with a constant of 16 N/m has 98 J of energy stored in it when it is extended. How far is the spring extended?

Alchen [17]

The spring has been extended for 3.5 m

<u>Explanation:</u>

We have the formula,

PE =1/2 K X²

Rewrite the equation as

PE=1/2 K d²

multiply both the sides by 2/K to simplify the equation

2/k . PE= 1/2 K d² . 2/K

√d²=√2PE/K

Cancelling the root value and now we have,

d=√2PE/k

d=√2×98 J / 16N/m

d=√12.25

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The spring has been extended for 3.5 m

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4 years ago

What is the acceleration of a car with the mass of 1,980 kg with

Nikolay [14]

The acceleration of a car with the mass of 1,980kg with a net horizontal force of 1,000 N is 0.51m/s².

<h3>HOW TO CALCULATE ACCELERATION?</h3>

The acceleration of a body can be calculated using the following formula:

a = F ÷ m

Where;

a = acceleration (m/s²)
F = Force (N)
m = mass (kg)

According to this question, a car has a mass of 1980kg and horizontal force of 1000N. The acceleration is as follows:

a = 1000/1980

a= 0.51m/s²

Therefore, the acceleration of a car with the mass of 1,980kg with a net horizontal force of 1,000 N is 0.51m/s².

Learn more about acceleration at: brainly.com/question/12134554

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2 years ago

Two objects exert a gravitational force on 8N on one another what would that force be if the mass of both objects were doubled?

jolli1 [7]

Gravitational force of attraction between two objects can be calculated from the following formula:
$F = \frac{m_1 \cdot m_2}{r^{2}}$
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When numerator in the second case 4 times greater than the 'original' numerator and denominator stays the same, force becomes 4 times greater.

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3 years ago