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harkovskaia [24]
3 years ago
8

A circuit has 3 resistors, all connected in parallel. Let R1 = 4.0 Ω, R2 = 3.0 Ω, and R3 = 6.0 Ω. What is the equivalent resista

nce of the circuit? Show all work and include units of measure.
Physics
2 answers:
ExtremeBDS [4]3 years ago
6 0

The effective resistance is the reciprocal of

1/4 + 1/3 + 1/6 =

3/12 + 4/12 + 2/12 =

9/12 Siemens

The reciprocal is 12/9 ohms.

That's 4/3 or 1.333 ohms.

Finger [1]3 years ago
5 0

Answer:

1 1/3 or 1.33333

Explanation:

First of all, you should note that the answer will be smaller than the smallest resistor. That means that the answer should be less than 3. Let's see if it is.

1/R1 + 1/R2 + 1/R3 = 1/Rt

  • R1 = 4
  • R2 = 3
  • R3 = 6

All resistors are in ohms.

1/4 + 1/3 + 1/6 = 1/Rt   You could do this using decimals, but the usual way is to use fractions.

The Common Denominator is 12

3/12 + 4/12 + 2/12 = 1/Rt

9/12 = 1/Rt                           Turn 9/12 upside down

12/9 = Rt

1 3/9 = RT

1 1/3 = Rt

1.3333 = Rt

The answer is under 3 so we know it should be right.

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GenaCL600 [577]

Complete Question

For each of the following scenarios, describe the force providing the centripetal force for the motion:

a. a car making a turn

b. a child swinging around a pole

c. a person sitting on a bench facing the center of a carousel

d. a rock swinging on a string

e. the Earth orbiting the Sun.

Answer:

Considering a

    The force providing the centripetal force is the frictional force on the tires \

          i.e  \mu mg  =  \frac{mv^2}{r}

    where \mu is the coefficient of static friction

Considering b

   The force providing the centripetal force is the force experienced by the boys  hand on the pole

Considering c

     The force providing the centripetal force is the normal from the bench due to the boys weight

Considering d

     The force providing the centripetal force is the tension on the string

Considering e

      The force providing the centripetal force is the force of gravity between the earth and the sun

Explanation:

6 0
3 years ago
In the equation for Ohm’s law what does I stand for?
Ket [755]
A) current 

(I is always current in electricity)
3 0
3 years ago
INK]: A car is moving at 200 km/hr east. What is its velocity?
Greeley [361]

Answer:

200 km\h

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5 0
3 years ago
. A mass m is traveling at an initial speed of 25.0 m/s. It is brought to rest in a distance of 62.5 m by a net force of 15.0 N.
harkovskaia [24]

Answer:

m = 3 kg

The mass m is 3 kg

Explanation:

From the equations of motion;

s = 0.5(u+v)t

Making t thr subject of formula;

t = 2s/(u+v)

t = time taken

s = distance travelled during deceleration = 62.5 m

u = initial speed = 25 m/s

v = final velocity = 0

Substituting the given values;

t = (2×62.5)/(25+0)

t = 5

Since, t = 5 the acceleration during this period is;

acceleration a = ∆v/t = (v-u)/t

a = (25)/5

a = 5 m/s^2

Force F = mass × acceleration

F = ma

Making m the subject of formula;

m = F/a

net force F = 15.0N

Substituting the values

m = 15/5

m = 3 kg

The mass m is 3 kg

7 0
3 years ago
Visually, how can you distinguish between an ac and dc power supply?
Temka [501]

Answer:

By the use of slow motion camera.

Explanation:

Visually, it is very hard to differentiate between an ac and dc power supply. But Since, we that In Ac supply polarity changes 100 times in a second ( because frequency of ac supply is 50 Hz generally). Whereas, Dc gives a steady power supply. So, in slow motion camera we can easily capture the flickering light tubes which won't happen in case of dc supply.

5 0
3 years ago
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