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Burka [1]
3 years ago
6

Which of the following shows resistors in a parallel circuit

Physics
2 answers:
Alexeev081 [22]3 years ago
7 0

The bottom drawing do

liubo4ka [24]3 years ago
5 0

Answer:

Circuit (b)

Explanation:

In parallel combination of resistors, the current flowing in each branch divides while the potential difference remains the same in entire circuit. The equivalent resistance is given by the following formula as :

\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}

While in series combination, the current remains the same while the volatge across each resistor is different. Their equivalent is given by:

R_{eq}=R_1+R_2+R_3

In the given figure, circuit (b) shows parallel combination of resistors. Also, the resistors are connected in two different paths in circuit (b).

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A ray of red light in air is incident at an angle of 30. on a
Vlad [161]

Answer:

20 degrees.

Explanation:

From Snell’s law of refraction:

sinθ1•n1 = sinθ2•n2

where θ1 is the incidence angle, θ2 is the refraction angle, n1 is the refraction index of light in medium1, and n2 is the refraction index for virgin olive oil. The incidence angle of the red light is θ1 = 30 degrees.

The red light is in air as medium1, so n1 (air) = 1.00029

So, to find θ2, the refracted angle:

sinθ1•1.00029 = sinθ2•1.464

sin(30)•1.00029 / 1.464 = sinθ2

0.5•1.00029 / 1.464 = sinθ2

sinθ2 = 0.3416291

θ2 = arcsin(0.3416291)

θ2 = 19.976 degrees

To the nearest degree,

θ2 = 20 degrees.

8 0
3 years ago
When the activation energy of an exothermic reaction decreases at a given temperature, the reaction rate increases because the _
fgiga [73]
When the activation energy of an exothermic reaction decreases at a given temperature, the reaction rate increases because the <span>number of successful effective collisions is higher. More of the reactants collide and are able to form products. Hope this answers the question. have a nice day.</span>
6 0
4 years ago
A roller coaster travels around a vertical 8-m radius loop. Determine the speed at the top of the loop if the normal force exert
strojnjashka [21]

Answer:

v=10m/sec

Explanation:

From the question we are told that

Radius of vertical r= 8m

Force exerted by passengers is 1/4 of weight

Generally the net force acting on top of the roller coaster is give to be

F_N+Fg

where

F_N =forceof the normal

Fg= force due to gravity

Generally the net force is given to be FC(force towards center)

F_C =F_N + Fg

F_N =F_C -Fg

F_N=F_C-F_g

F_N=\frac{mv^2}{R} -mg

Mathematical we can now derive V

m_g + \frac{8m}{4}= \frac{mv^2}{8}

\frac{5mg}{4} =\frac{mv^2}{8}

v^2 =\frac{40*10}{4}

v=10m/sec

Therefore the speed of the roller coaster is given ton be v=10m/sec

5 0
3 years ago
A body builder exerts 15 N of force over 3 m. How much work did she do?
tangare [24]
Work done = force x distance

work done = 15 x 3

work done = 45J
4 0
3 years ago
Read 2 more answers
The concept of photons applies to which regions of the electromagnetic spectrum?
Amanda [17]

Answer:

D. all regions of the spectrum

Explanation:

I did some research ; )

7 0
3 years ago
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