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abruzzese [7]
2 years ago
9

What is the equivalent resistance of a circuit that contains four 75.0 resistors connected in series to a 100.0 v battery

Physics
2 answers:
solong [7]2 years ago
6 0
The equivalent resistance of several resistors connected in series is
the sum of their individual values.

Four 75-ohm resistors connected in series are electrically equivalent
to a single resistor of    300 ohms.

The battery voltage doesn't matter.  In fact, it doesn't matter whether the
resistors are anywhere near a battery or not.  They could just as well still
be in the little Radio Shack envelope on the top shelf of the storage room. 
If they're connected in series, then they're still electrically equivalent to a
single 300-ohm resistor.
sergiy2304 [10]2 years ago
6 0

Answer: 300.0

Explanation:

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What magnitude charge creates a 1.0 n/c electric field at a point 1.0 m away?
Stolb23 [73]

Answer:

1.1\cdot 10^{-10}C

Explanation:

The electric field produced by a single point charge is given by:

E=k\frac{q}{r^2}

where

k is the Coulomb's constant

q is the charge

r is the distance from the charge

In this problem, we have

E = 1.0 N/C (magnitude of the electric field)

r = 1.0 m (distance from the charge)

Solving the equation for q, we find the charge:

q=\frac{Er^2}{k}=\frac{(1.0 N/c)(1.0 m)^2}{9\cdot 10^9 Nm^2c^{-2}}=1.1\cdot 10^{-10}C

8 0
1 year ago
A flat, wide cloud floats horizontally a few kilometers above the surface of Earth. Its lower surface carries a uniform surface
valentinak56 [21]

Answer:

\frac{kQ}{r^2} r^

Explanation:

Electric field strength= Force/unit charge

E= (kQq/r²)/q ₓ r

where r is the unit vector in the direction of unit charge

E= \frac{kQ}{r^2} r^

4 0
2 years ago
If the period of a clock signal is 500 ps, the frequency is:_____
NNADVOKAT [17]

Answer:

The frequency of the signal is 2 GHz

Explanation:

Given;

period of the clock signal, T = 500 ps = 500 x 10⁻¹² s

the frequency of the signal is given by;

F= \frac{1}{T}\\\\F = \frac{1}{500*10^{-12}}\\\\F = 2*10^{9} \ Hz

F = 2 GHz

Therefore, the frequency of the signal is 2 x 10⁹ Hz or 2 GHz

4 0
2 years ago
Coffee is poured at a uniform rate at 20 cm3 / s into a cup whose inside is shaped like a truncated cone. if the upper and lower
Vladimir [108]

Let the cup is filled to height h after some time

now the total volume of coffee filled in the cup is given as

\frac{2}{y} = \frac{4}{6+y}

2y = 6 + y

y = 6 cm

now volume of the coffee will be

V = \frac{1}{3}\pi r^2(y + 6) - \frac{1}{3}\pi 2^2 (6)

here we know that

\frac{r}{y+6} = \frac{2}{6}

r = \frac{y+6}{3}

V = \frac{1}{3}\pi (\frac{y+6}{3})^2(y+6) - \frac{1}{3}\pi 2^2(6)

now we know that volume flow rate is given as

Q = \frac{dV}{dt}

20 cm^3/s = \frac{1}{3}\pi (\frac{1}{9})(3(y+6)^2)\frac{dy}{dt}

20 \times 9 = \pi (y + 6)^2 v

here y = 3 cm

180 = \pi (9)^2 v

v = 0.71 cm/s

so water will rise up with speed 0.71 cm/s


5 0
2 years ago
A boy can accelerate at 1.00 m/s 2 over a short distance. If the were to take an energy pill and suddenly have the ability to ac
VikaD [51]
We know that:
F = ma,
so
F/a = constant
F₁/a₁ = F₂/a₂
F₂ = F₁ x 5.6 / 1
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If F₁ = 45 N,
F₂ = 5.6 x 45
= 252 N
4 0
2 years ago
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