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Elden [556K]
3 years ago
5

A complete series circuit consists of a 12.0 V battery, a 4.70 O resistor, and a switch. The internal resistance of the battery

is 0.30 O. The switch is open. What does an ideal voltmeter read when placed across the terminals of the switch?
12.0 V
9.40 V
2.40 V
zero
Physics
2 answers:
uysha [10]3 years ago
6 0

Answer:

12.0V is correct !!

Explanation:

RoseWind [281]3 years ago
4 0

With the switch open, there's no current in the circuit, and therefore
no voltage drop across any of the dissipative elements (the resistor
or the battery's internal impedance).  So the entire battery voltage
appears across the switch, and the voltmeter reads 12.0V .

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Inessa05 [86]

Answer:

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8 0
3 years ago
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If a car collides with a moving bus, what type of relationship exists between the force of the car and the force of the bus?.
Troyanec [42]

The correct answer is forces are equal but opposite in direction between car and bus.

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When two objects collide, forces of equal magnitude and opposite direction are applied to each object. Such pressures frequently result in one thing gaining momentum and gaining speed while the other object slows down (lose momentum).

The force applied to an object to cause an impact—a change in momentum—on it is referred to as the impact force, or momentum. Technically speaking, the Car and the bus would have exerted and felt the same amount of impact force in the event of a collision. Because every action has a corresponding and opposing response, according to Newton's third law.

To learn more about Collision from the given link

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5 0
1 year ago
A weight of 6 kg increases the speed of its force from 2 m / s to 4 m / s. By how many joules does the kinetic energy of the bod
Leviafan [203]

Answer:

36 J

Explanation:

Let's start off with the Kinetic Energy formula: 1/2mv^{2}

So to find the <em>change</em> in Kinetic Energy, you would first have to find the Kinetic Energy in the beginning and in the end.

*Note: Mass: you incorrectly wrote weight = 6 kg- because weight is a force you have to write 6 Newtons. If you are talking about the <em>mass</em>, you would write 6 kg. If you are talking about weight, you would write 6 Newtons. The difference will make significant changes to the answer, so I will give you the answer for both.

If 6 kg is the MASS:

Beginning: find the kinetic energy.

Plug in all parts of the formula: 1/2mv^2 = \frac{1}{2}(6)(2 squared)= \frac{1}{2}(6)(4)= 12 J

End: find the kinetic energy.

Plug in all parts of the formula: 1/2mv^2=\frac{1}{2}(6)(4 squared)=\frac{1}{2}(6)(16)= 48 J

Answer:

36 J

If 6 kg is the WEIGHT:

We know that the weight formula is mg, or mass times acceleration due to gravity (which is always 9.8 m/s^2). Plug in the numbers:

Weight = mass x acceleration due to gravity

6 = mass x 9.8

6 = 9.8m

*Divide both sides*

mass = 0.6 kg

Now, we can use the mass to find the kinetic energy.

Beginning: find the Kinetic Energy

Plug in all parts of the formula: 1/2mv^2 = \frac{1}{2}(0.6)(2 squared)= \frac{1}{2}(0.6)(4)= 1.2 J

End: find the Kinetic Energy

Plug in all parts of the formula: 1/2mv^2=\frac{1}{2}(0.6)(4 squared)=\frac{1}{2}(0.6)(16)= 4.8 J

Answer:

3.6 J

(this answer is not very feasible, so 36 J is the way to go. But just remember, don't mix up weight and mass again- as you can see, they lead to different answers!)

4 0
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No.

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nexus9112 [7]
The answer is C!!!!!!!
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