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zmey [24]
3 years ago
9

A circuit consists of a 9.0 v battery connected to three resistors (52 , 17 , and 140 ) in series. (a) find the current that flo

ws through the battery.
Physics
1 answer:
Fudgin [204]3 years ago
7 0
A) TOTAL Resistance = 41+18+120 = 179 ohms 
<span>Current = V/R = 9 / 179 = 0.0503 A = 50.3 mA </span>

<span>B) V = I*R = .0503 * 41 = 2.06 V </span>

<span>C) V = I*R = .0503 * 18 = 0.91 V </span>

<span>D) V = I*R = .0503 * 120 = 6.03 V</span>
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A 2,000 kg car starts from rest and coasts down from the top of a 5.00 m long driveway that is sloped at an angel of 20o with th
ehidna [41]

Answer:

The speed at the bottom of the driveway is3.67m/s.

Explanation:

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KE= PE- Fk ×d

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0.5×2000v^2= 33516 - 20000

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3 years ago
What is the fundamental unit for measuring mass in the metric system ?
goldenfox [79]
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I need help please someone !!!!! Would appreciate it
babymother [125]

Answer:

Yes, it would make it back up.

Explanation:

If it has 100,000 Joules of gravitational potential energy at the top of the hill, by the time the cart gets to the bottom, it will become PE = 0, KE = 90,000 since 10% of 100,000 is 10,000. The cart only requires 80,000J to climb back up so it should easily do so.

I didn't quite understand if the 10% energy loss is total, or every time it goes up or down, but it isn't a problem because 10% of 90,000 is 9,000, which means it would have 81,000J of energy on the way back up IF it loses energy due to friction on the way back up also.

The only physical law you need to prove this is the Law of Conservation of Energy: no energy is lost, only transformed; 10% of the energy becomes heat, the rest remains mechanical energy, which is the reason why the reasoning above works.

5 0
3 years ago
The result of changing a physical sound wave into an analogous electrical signal using a transducer (such as a microphone) is ca
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3 years ago
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frutty [35]

Answer:

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Explanation:

Hello!

To solve this exercise follow the following steps, the description and complete process is in the attached image

1. Draw the full sketch of the problem.

2. The work is defined as the product of the trajectory by the force that is parallel to this direction, for this reason to find the work done we multiply the horizontal distance (250m) by the applied force (454N)

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4. We use the sine function to find the diagonal distance using the height and angle of the slope

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