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Alexus [3.1K]
3 years ago
6

Which of the following is true for a parallel circuit? The current is the same across all resistors in the circuit. The voltage

is the same across all resistors in the circuit. As more resistors are added, the current will decrease. The sum of the voltage drops will equal the total voltage
Physics
1 answer:
wel3 years ago
4 0
A Parallel circuit has certain characteristics and basic rules: A parallel circuit has two or more paths for current to flow through. Voltage is the same across each component of the parallel circuit. The sum of the currents through each path is equal to the total current that flows from the source.
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A radar gun can determine the speed of a moving automobile by measuring the difference in frequency between emitted and reflecte
kupik [55]

Answer:

Doppler effect.

Explanation:

The velocity of the moving car affects the wavelengths of the reflecting  radio waves according to the principle of Doppler effect. Therefore, for a car moving away from the radar gun, the wavelength of the radio waves is increased, and for a car moving towards the gun, the wavelength is decreased. The degree of increase or decreases depends on the speed of the car, so if you know how much a wavelength has changed, you know the velocity of the car.

4 0
3 years ago
Under which conditions do both convex and concave mirrors form virtual images? State whether or not each can form a real image.I
natali 33 [55]
Concave mirror​s can make a real image.when the object is away from the mirror it is called real image and when the object is closer to the mirror it is called virtual mirror.
8 0
3 years ago
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A girl takes her dog for a walk on a sunny beach. Find the force of gravity between the 45-kg girl and her 11-kg dog when they a
Lady_Fox [76]

The gravitational force acting between them is 8.25*10^-^9N

Data given;

  • M1 = 45kg
  • M2 = 11kg
  • r = 2.0m
  • G = 6.67*10^-^1^1m^3kg^-^1s^-^1

To solve this question, we need to apply gravitational force or energy formula.

<h3>Gravitational Force</h3>

This states that the force of attraction between two bodies is equal to the product of their bodies and inversely proportional to the square of their distance apart.

Mathematically;

F = \frac{GM_1M_2}{r^2} \\

let's substitute the values and solve

F = \frac{Gm_1m_2}{r^2}\\F = \frac{6.67*10^-^1^1 * 45 * 11}{2^2}\\F = 8.25*10^-^9N

The force of gravity acting between them is 8.25*10^-^9N

Learn more on gravitational force here;

brainly.com/question/11359658

4 0
3 years ago
If the period of a certain wave (wavelength = 4.5 m) is 2 seconds, what is the speed of the wave?
taurus [48]

Answer:

2.25m/s

Explanation:

wavelength=4.5m

period=2sec

frequency= 1/period

=1/2

speed= wavelength×wave frequency

=4.5×1/2

=2.25 m/s

so, none of the options are correct

5 0
3 years ago
A car travels straight for 20 miles on a road that is 30° north of east. What is the east component of the car’s displacement to
Virty [35]
17.3 would be the correct answer.

4 0
3 years ago
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