Physics College

Which statement accurately describes impulse?
State corrrect ans

Answers

Answer 1
where are the statements at ?
Answer 2

Answer:

2nd option on edge2021

Explanation:

Related Questions

I need help pls help

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You want all those boxes filled in (0,0)

What function do you think a flower that can stay warm at night might have for a plant?

Answers

Answer:

it keeps it growing because if it stays warm and yuh put it by a plant that needs sun yk

Explanation:

A flower of a plant that can stay warm at night as it keeps it growing.

What are the function of different parts of plant ?

The roots are the underground part of the plant which plays a major role in pulling the water and minerals,  expands within the ground  for better water absorption, anchors which helps in creating better stability.

A stem present above the ground bears leaves, fruits plus flowers.  as it distributes the nutrients and minerals to the leaves, shields the plant and assists in asexual dissemination.

leaf is one of the most major parts of a plant as it contain chlorophyll pigment which assists the plants in preparation for food, the veins allow the flowing of nutrients plus water, it has the parts like petiole, leaf base and lamina help in photosynthesis.

Flower is the most bright and beautiful part of the plant show an important role in making food, used in fertilization process , the basic parts are petals, sepals, stamens, and pistil.

For more details  plant,  visit

https://brainly.com/question/1283049

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If 0.5 kg of this material is used in a transformer core, how long would it have to operate at a frequency of 60 cps to heat up 1

Answers

Answer:

Hello your question is incomplete attached below is the complete question

answer : 49 seconds

Explanation:

considering only Hysteresis loss

we have to calculate the Area affected/under the  Hysteresis loss

= volume * area

= 4 * ( 1.5 * 20 ) =  120 tesla. A/m

next we calculate the volume of the material

= mass of material / density

= 500 grams / 7.9 g/cm^3  = 6.33 * 10^-5 m^3

next we calculate the heat lost per cycle

= 6.33 * 10^-5 m^3 * 120 = 0.007596 joules

The total heat required to raise  temperature by 1°c

= Cp * ΔT * n

= 3R * n * ΔT  = 3(8.314) * 8.95 * 1  = 223.23 Joules

where n = number of moles = 500grams / 55.85 = 8.95moles

ΔT = 1

Therefore the time required to have to operate at a frequency of 60 cps

= Total heat required  / heat lost per cycle

=( 223.23 / 0.007596 ) 60 cps

= 489.796 seconds ≈  49 seconds

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