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Lerok [7]
3 years ago
12

Please I need help on Physics ASAP!!!

Physics
1 answer:
Dafna11 [192]3 years ago
7 0

Answer:

you cant cheat on test

Explanation:

you will get repoted

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If the electrical field in some region or space is zero, does that imply that there is no electrical charge in that region?
mrs_skeptik [129]
No
It means the resultant electrical charges had canceled each other out so there is no field to be sensed .
7 0
3 years ago
In very cold weather, a significant mechanism for heat loss by the human body is energy expended in warming the air taken into t
Pie

Answer:

A) Q_a=74256\ J

B) Q=93562560\ J

Explanation:

Given:

  • temperature of air, T_a=-19+273=254\ K
  • temperature of lungs, T_l=37+273=310\ K
  • specific Heat exchanged from the lungs , c_l=0.47\ J.kg^{-1}.K^{-1}
  • specific heat of air, c_a=1020\ J.kg^{-1}.K^{-1}
  • mass of 1 L air, m'=1.3\ kg
  • breath rate, b=21\ breath.min^{-1}

A)

Now,

amount of heat needed to warm the air of lungs to the body temperature:

Q_a=m'.c_a.\Delta T

Q_a=1.3\times1020\times (310-254)

Q_a=74256\ J

B)

Amount of heat lost per hour:

<u>No. of breaths per hour:</u>

B=b.60

B=21\times 60

B=1260

<u>Now the total loss of energy in 1 hr.:</u>

Q=Q_a.B

Q=74256\times 1260

Q=93562560\ J

7 0
3 years ago
Particle motion in surface waves is __________ motion.
Debora [2.8K]
Surface wave is defined as the type of wave that is capable of moving at the interface between two different types of mediums/materials (example is surface wave that is between the water and air).
Particles in the surface wave usually move in orbital or elliptical shapes and their motion is a combination of both longitudinal and transverse motions.

Based on the above, the correct choice is:
<span>A) a combination of longitudinal and transverse
</span>
5 0
3 years ago
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Explain how water changes state using physical changes.
Marat540 [252]

Answer:

Explanation:

Gbuu g by. Out vvuitguvvigvvvug. It uby

6 0
3 years ago
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I really need help i’m in a really big rush
kompoz [17]


1. The speed is at a constant rate same with the acceleration and velocity

2. When there getting close to the top there speed, acceleration, and velocity all start to decrease

3. The speed and acceleration and velocity all on the way down drastically increase number

hope I helped
3 0
3 years ago
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