1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aliina [53]
2 years ago
14

How can three resistors of resistance 2ohm,3ohm and 6ohm be connected to go live total resistance of (a) 4ohm,(b)1ohm?​

Physics
1 answer:
Sophie [7]2 years ago
8 0

\sf\large \green{\underbrace{\red{Answer⋆}}}:

(a) R2, R3 are parallel and series with R1

(b) R1, R2 and R3 are in parallel

Explanation:

\sf R_1 = 2  \: ohm\\  \sf R_2 = 3 \: ohm \\  \sf  R_3 = 6 \: ohm

(a)

\sf R_2   \: and \: R_3 \: are \: in \: parallel \\ \sf so \: let \: the \: total \: of \: R_2 \: and \: R_3 \: be \: R_a

\sf  \large \frac{1}{R_a}  =  \frac{1}{R_2}  +  \frac{1}{R_3}  \: as \: they \: are \: in \: parallel

\sf R_a =  \frac{1}{3}  +  \frac{1}{6}  \\  \\  \sf  \frac{1}{R_a}  =  \frac{2 + 1}{6}  \\  \\  \sf \frac{1}{R_a}   =  \frac{3}{6}  \\  \\  \sf  \frac{1}{R_a}  =  \frac{1}{2}  \\  \\  \sf R_a = 2 \: ohm

Ra and R1 is in series

And there total will be R

\sf R = R_a + R_1 \\  \\  \sf R = 2 + 2 \\  \\  \sf R = 4 \: ohm

(b)

\sf R_1 R_2 \: and \:R_3 \: are \: in \: parallel \: so \: total \: be \: R

\sf \frac{1}{R}  =  \frac{1}{R_1}  +  \frac{1}{R_2}  +  \frac{1}{R_3}  \\  \\   \sf   \frac{1}{R}  =  \frac{1}{2}  +  \frac{1}{3}  +  \frac{1}{ 6}  \\  \\  \sf  \frac{1}{R}  =  \frac{3+ 2 +1 }{6}  \\  \\  \sf  \frac{1}{R}  =  \frac{6}{6}  \\  \\  \sf R = 1 \: ohm

You might be interested in
How much is the tension number 2
mestny [16]

This is what I got:

Net force in the Y direction:

ΣFy = T1 - T2

F = ma

ma = T1 - T2

Isolate for T2

ma - T1 = -T2

Multiply by -1

T1 - ma = T2

100 - (3)(2) = T2

100 - 6 = T2

T2 = 94 N

4 0
3 years ago
Pure sodium metal placed in water will spark and ignite, as well as form bubbles and gas. What are the signs that this is a chem
ad-work [718]
<h3><u>Answer;</u></h3>
  • Heat is produced
  • Light is produced
  • Bubbles appear
<h3><u>Explanation;</u></h3>
  • Chemical reactions involve the chemical interaction of two or more chemical substances, result in a new substance being formed, and are usually irreversible.
  • The signs of chemical reactions include gas formation, energy release in the form of light or flame, heat absorption, precipitate formation, and color change.
7 0
3 years ago
Read 2 more answers
A package of mass 5 kg sits on an airless asteroid of mass 7.6 × 1020 kg and radius 8.0 × 105 m. We want to launch the package i
Effectus [21]

Answer:

s =  1.7 m

Explanation:

from the question we are given the following:

Mass of package (m) = 5 kg

mass of the asteriod (M) = 7.6 x 10^{20} kg

radius = 8 x 10^5 m

velocity of package (v) = 170 m/s

spring constant (k) = 2.8 N/m

compression (s) = ?

Assuming that no non conservative force is acting on the system here, the initial and final energies of the system will be the same. Therefore  

• Ei = Ef

• Ei = energy in the spring + gravitational potential energy of the system

• Ei = \frac{1}{2}ks^{2} + \frac{GMm}{r}

• Ef = kinetic energy of the object

• Ef = \frac{1}{2}mv^{2}  

• \frac{1}{2}ks^{2} + (-\frac{GMm}{r}) = \frac{1}{2}mv^{2}  

• s = \sqrt{\frac{m}[k}(v^{2}+\frac{2GM}{r})}

s = \sqrt{\frac{5}[2.8 x 10^5}(170^{2}+\frac{2 x 6.67 x10^{-11} x 7.6 x 10^{20}}{8 x 10^5})}

s =  1.7 m

7 0
3 years ago
The x vector component of a displacement vector has a magnitude of 146 m and points along the negative x axis. The y vector comp
larisa86 [58]

Answer:  

a) the magnitude of r is  184.62

b) the direction is 37.74° south of the negative x-axis

   

Explanation:

Given the data in the question;

as illustrated in the image blow;

To find the the magnitude of r, we will use the Pythagoras theorem

r² = y² + x²

r = √( y² + x²)

we substitute

r = √((-113)² + (-146)²)

r = √(12769 + 21316 )

r = √(34085 )

r = 184.62

Therefore, the magnitude of r is  184.62

To find its direction, we need to find ∅

from SOH CAH TOA

tan = opposite / adjacent

tan∅ = -113 / -146

tan∅ = 0.77397

∅ = tan⁻¹( 0.77397 )

∅ = 37.74°

Therefore, the direction is 37.74° south of the negative x-axis

7 0
2 years ago
While trees are not the largest level in the pyramid of numbers, they are still the base for both the pyramids of biomass and py
Oxana [17]
It is true because <span>A pyramid of biomass is a representation of the amount of energy contained in biomass, at different trophic levels for a given point in time . The amount of energy available to one trophic level is limited by the amount stored by the level below. Because energy is lost in the transfer from one level to the next, there is successively less total energy as you move up trophic levels. Tree is a base as it provides food and energy.</span>
6 0
3 years ago
Other questions:
  • __________ is best described as the process of transformation of an idea into a new product orprocess, or the modification and r
    5·2 answers
  • On the planet Xenophous a 1.00 m long pendulum on a clock has a period of 1.32 s. What is the free fall acceleration on Xenophou
    12·1 answer
  • Which statement best describes the explanatory powers of hypotheses and theories?
    6·2 answers
  • Two pans of a balance are 46.3 cm apart. The fulcrum of the balance has been shifted 0.633 away from the center by a dishonest s
    12·1 answer
  • Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such plate has an average speed of 4.
    14·1 answer
  • Work is being done when
    9·1 answer
  • One important way to adapt to diverse culture is to
    11·2 answers
  • A dog walks 12 meters to the west and then 16 meters back to the east
    9·2 answers
  • What kind of energy is used in baking?<br>A. Light<br>B. Sound<br>C. Heat<br>D. Mechanical​
    13·1 answer
  • In which circuit does charge reverse direction many times per second?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!