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lukranit [14]
2 years ago
7

What is the electric current measured in

Physics
1 answer:
cluponka [151]2 years ago
6 0

An ampere (AM-pir), or amp

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Newton believed that time and space are absolute, while Einstein believed that the ______ is absolute.
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Pliss help...
natita [175]

Answer:

I think it is A

Explanation:

Below, what belongs to the organs of the circulatory system in humans is...

<em>a. heart - kidneys - lungs</em>

b. heart-blood vessels - blood

c. heart - kidney - liver

d. heart - lungs

7 0
2 years ago
1. On the planet Microid, trains that run on air tracks much like the air track you used in lab are the principle means of trans
Sedaia [141]

Answer:

a) the mass of the second car = 28000 kg

b) the amount of kinetic energy that was lost in the collision = 246.9*10^3 \ J

Explanation:

Given that:

mass of the train car m_1 = 6300 kg

speed of the train car v_1 = 12.0 m/s

mass of the second moving car m_2 = ???

speed of the second moving car v_2 = 2.2 m/s

After strike;

they both move with a speed v_f = 4.00 m/s

a)

Using the conservation of momentum :

m_1v_1+m_2v_2 = (m_1 + m_2)v_f

(6300*12)+m_2(2.2) = (6300 + m_2)4

(75600)+m_2(2.2) = 25200 + 4m_2

75600 - 25200  = 4m_2 -2.2m_2

50400 = 1.8m_2

m_2 = \frac{50400}{1.8}

m_2 = 28000 \ kg

b)

To determine the amount of kinetic energy that was lost in the collision;

we will need to find the difference between the kinetic energy before the collision and after the collision;

i.e

K.E _{lost} = K.E_{i} - K.E _{f}

K.E_{i}  =  \frac{1}{2} m_1v_1^2 + \frac{1}{2}m_2v_2^2

K.E_{i}  =  \frac{1}{2} (6300)(12)^2 + \frac{1}{2}(28000)(2.2)^2

K.E_{i}  =  521360 \ J

K.E_{f}  = \frac{1}{2}(m_1 + m_2 ) v_f ^2

K.E_{f}  = \frac{1}{2}(6300 + 28000 ) (4)^2

K.E_{f}  =274400 \ J

Now;  the  kinetic energy that was lost in the collision is calculated as follows:

K.E _{lost} = K.E_{i} - K.E _{f}

K.E_{lost} = (521360-274400) \ J

K.E_{lost} =246960 \ J

K.E_{lost} =246.9 * 10 ^3 \ J

7 0
3 years ago
How many ohms of resistance must be present in a circuit that has 50 volts and a current of 2 amps.
Lady_Fox [76]

Answer:

25 ohms

Explanation:

Hi there!

Ohm's law states that V=IR where V is voltage, I is current and R is resistance.

Plug the given information into Ohm's law (V=50, I=2) and solve for R

V=IR\\50=2R

Divide both sides by 2 to isolate R

\frac{50}{2}= \frac{2R}{2}  \\25=R

Therefore, there are 25 ohms of resistance present in this circuit.

I hope this helps!

5 0
2 years ago
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