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LUCKY_DIMON [66]
3 years ago
12

An electric motor is running on 120 V. The current is measured to be 2 A. How many ohms of resistance is the motor

Physics
1 answer:
valentinak56 [21]3 years ago
6 0

Answer:

60 ohms

Explanation:

v = ir \\ 120 = 2i \\ i = 120 \div 2 \\ i = 60ohms

If it is helpful pls follow

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If an object moving at 5 m/s accelerates for 30 seconds at a rate of 2
klasskru [66]

Answer:

V=u + at

V= final velocity

U= Initial velocity

a= acceleration

t= time taken

V= 5 + 30*2

V=5+60

V=65m/s

Explanation:

4 0
3 years ago
A helium balloon is filled to a volume of 2.88 x 103 L at 722 mm Hg and 19°C. When the balloon is released, it rises to an alti
inn [45]

Answer:

V₂=4.57 x 10³ L

Explanation:

Given that

V₁= 2.88 x 10³ L

P₁=722 mm  Hg

T₁ = 19°C

T₁ =292 K

P₂=339 mm Hg

T₂= - 55°C

T₂=218 K

Lets take final volume = V₂

We know that ideal gas equation

PV = m R T

By applying mass conservation

\dfrac{P_1V_1}{RT_1}=\dfrac{P_2V_2}{RT_2}

\dfrac{722\times 2.88\times 10^3}{292}=\dfrac{339\times V_2}{218}

V₂=4.57 x 10³ L

Therefore volume will be 4.57 x 10³ L

3 0
3 years ago
Complete the sentence
scoray [572]

The object is at rest.


This is due to the fact hwen two forces act upon each other on opposite sides, the movement of the object does not change due to the net force equaling 0.

6 0
3 years ago
A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0 m/s .If the cart has an initial speed of of 2.0 m/s ,w
Lubov Fominskaja [6]

Applying

v=u+a.t

(all the symbols are bearing their conventional meaning)

Here,u=2ms−1,t=5,a=4ms−2

So,v=2+4⋅5=22ms−1

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