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3 years ago

A circuit is built based on the circuit diagram shown.

Physics

2 answers:

DaniilM [7]3 years ago

9 0

Answer : Current in 50 ohms resistor is 1.2 A.

Explanation :

It is given that,

Voltage, $V=60\ V$

In the given figure, all three resistors i.e. 40 ohms, 50 ohms and 30 ohms are in parallel combination.

We know that in parallel combination, the voltage in all resistor remains the same.

From Ohm's law :

V = I R

V = voltage

I = current

R = resistors

So, the current in 50 ohm resistor will be :

$I=\dfrac{V}{R}$

$I=\dfrac{60\ V}{50\ \Omega}$

$I=1.2\ A$

So, the current flowing in 50 ohms resistor is 1.2 A.

liraira [26]3 years ago

3 0

The correct answer is A <span />

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3 years ago

While in a car at 4.47 meters per second a passenger drops a ball from a height of 0.70 meters above the top of a bucket how far

viktelen [127]

Answer:

1.7 m

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t = Time taken

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Horizontal displacement is given by

$s_x=v_xt\\\Rightarrow s_x=4.47\times 0.38\\\Rightarrow s_x=1.7\ \text{m}$

The passenger should throw the ball 1.7 m in front of the bucket.

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3 years ago

Atoms of two different elements must have different

sergejj [24]

Explanation:

C. Atomic numbers....

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3 years ago

Two cars are moving towards each other and sound emitted by first car with real frequency of 3000 hertz is detected by a person

sertanlavr [38]

Answer:

v ’= 21.44 m / s

Explanation:

This is a doppler effect exercise that changes the frequency of the sound due to the relative movement of the source and the observer, the expression that describes the phenomenon for body approaching s

f ’= f (v + v₀) / (v- $v_{s}$ )

where it goes is the speed of sound 343 m / s, v_{s} the speed of the source v or the speed of the observer

in this exercise both the source and the observer are moving, we will assume that both have the same speed,

v₀ = v_{s} = v ’

we substitute

f ’= f (v + v’) / (v - v ’)

f ’/ f (v-v’) = v + v ’

v (f ’/ f -1) = v’ (1 + f ’/ f)

v ’= (f’ / f-1) / (1 + f ’/ f) v

v ’= (f’-f) / (f + f’) v

let's calculate

v ’= (3400 -3000) / (3000 +3400) 343

v ’= 400/6400 343

v ’= 21.44 m / s

3 0

3 years ago