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kupik [55]
3 years ago
11

For a circuit find the total potential differences if two resistors

Physics
1 answer:
stepan [7]3 years ago
8 0

-- If the two resistors are connected in series, then they behave like a single resistor whose resistance is (R₁ + R₂) ohms.

-- For any resistance, the potential difference (volts) across the resistance is   V = (current) x (resistance) .

-- So in THIS circuit,  <em>V = I x (R₁ + R₂)</em> .

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List the following in order from largest to smallest:
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What are plants and animals that get their energy from eating other things?
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Read 2 more answers
The function x = (7.8 m) cos[(5πrad/s)t + π/3 rad] gives the simple harmonic motion of a body. At t = 4.4 s, what are the (a) di
VMariaS [17]

Answer:

a.3.84m

b.-106.67m/s

c.947.3m/s^2

d.70.17 rad

e.2.5Hz

d.0.4secs

Explanation:

Given x=(7.8)cos[5πrad/s)t+π/3)]

a.Displacement at t=4.4

7.8cos(5π*4.4+π\3)=3.84m

b.velocity

V= dx/dr=-5π(7.8)sin(5πrad/s)t+π\3

at t=4.4

-5π(7.8)sin(5π*4.4+π\3)=-106.67m/s

c.acceleration

a=d^2x/dr^2

-(5π)^2(7.8) cos (5π*t+π\3)

at t=4.4

-(5π)^2(7.8)cos(5π*4.4+π\3)=-947.3m/s^2

d. Phase =(5πrad/s)t+π\3

At t=4.4

5π×4.4+π\3=70.17 rad

e.frequency

Given x= 7.8cos(5πt+π\3

Compare with x=Acos(2πft)

2πft=5πt

F=2.5Hz

f.T=1\f

T=1/2.5=0.4sec

6 0
3 years ago
A plane travels 4.0 km at an angle of 25◦ to the ground, then changes direction and travels 10 km at an angle of 16◦ to the grou
Maslowich

Answer:

6.1 km

Explanation:

Given that a plane travels 4.0 km at an angle of 25◦ to the ground, then changes direction and travels 10 km at an angle of 16◦ to the ground. What is the magnitude of the plane's total displacement? Answer in units of km

The magnitude of the total displacement D can be calculated by using cosine formula

Ø = 25 - 16 = 9 degree

D^2 = 4^2 + 10^2 - 2 × 4 × 10 × cos 9

D^2 = 16 + 100 - 80cos9

D^2 = 116 - 79.02

D = sqrt( 36.98)

D = 6.1 m

Therefore, the magnitude of the plane's total displacement is 6.1 km

5 0
2 years ago
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