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3 years ago

What is unit?what it's type

Physics

2 answers:

Maru [420]3 years ago

4 0

Explanation:

The standard reference quantity with reference to which other physical quantity of the same kind are measured is called a unit . It's types are fundamental units and derived units .

vaieri [72.5K]3 years ago

3 0

Unit-Unit is the standard assigned to measure physical quantity. ... Fundamental units-These are the units which are not at all related with each other and also one can not be changed into the other. These are perfectly independent. The units of the fundamental quantities used in Physics are the fundamental units.

Hope this helps :)))

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To reduce inductive reactance, what devices are normally placed on transmission or distribution lines?

UkoKoshka [18]

Answer : Capacitors

Explanation : Capacitors are normally placed on transmission or distribution lines when to reduce inductive reactance.

This is because it enhances electromechanical and voltage stability , limit voltage dips at network nodes and reduces the power loss.

So, we can say that inductive reactance normally replace by the capacitors.

4 0

3 years ago

A child blows a leaf from rest straight up in the air. The leaf has a constant upward acceleration of magnitude 1.0\,\dfrac{\tex

Novosadov [1.4K]

Answer:

Explanation:

Given

Acceleration a = 1.0m/s²

Displacement S = 1.0m

Required

Time t taken by the leaf to displace

Using the equation of motion

S = ut+1/2at²

Substitute

1.0 = 0+1/2(1)t²

1 = t²/2

Cross multiply

t² = 2

t = ±√2

t = 1.41secs

It takes the leaf to 1.41s to displace by 1m upward

6 0

3 years ago

A mountain slope and a skier make up a closed system with 21,800 J J of energy. When the skier starts her descent down the mount

belka [17]

Answer: 1,270 J

Explanation: APEX

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3 years ago

A roller skater of 47kg moving with a velocity of 12 m/s to the east picks up a bag of 6.0 kg. What is the final velocity of the

WITCHER [35]

Answer:

v_f = 10.85 m/s

Explanation:

We will apply the law of conservation of momentum here:

$m_{1}v_{1i} + m_{2}v_{2i} = m_{1}v_{1f}+m_{2}v_{2f}\\$

where,

m₁ = mass of roller skater = 47 kg

m₂ = mass of bag = 6 kg

v_1i = initial speed of roller skater = 12 m/s

v_2i = initial speed of the bag = 0 m/s

v_1f = final speed of the roller skater = ?

v_2f = final speed of the bag = ?

Both the bag and the skater will have same speed at the end because kater is carrying the bag:

v_1f = v_2f = v_f

Therefore, the equation will become:

$(47\ kg)(12\ m/s)+(6\ kg)(0\ m/s)=(47\ kg)(v_{f})+(5\ kg)(v_{f})\\564\ N.s = (47\ kg+5\ kg)(v_{f})\\v_{f} = \frac{564\ N.s}{52\ kg}\\$

8 0

3 years ago

Suppose you see two stars: a blue star and a red star. Which of the following can you conclude

Mnenie [13.5K]

Answer:

Explanation:

blue stars have a hotter sufarce arra, thats what makes them brighter.

8 0

4 years ago

What is unit?what it's type​

What is unit?what it's type