4 years ago

During or after exercise, it is normal for a student to comment that his/her heart feels like it is "beating out of my chest."

Physics

2 answers:

mixer [17]4 years ago

7 0

Yes because they’ve probably exercised a lot and exercise has been proven to make your heart beat faster

Bumek [7]4 years ago

6 0

Answer: yes

Explanation:

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5. What is an excess of electric charge on an<br> object?

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Answer:

Explanation:. What is an excess of electric charge on an

object?

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3 years ago

A machine that transforms electrical energy into mechanical energy to produce motion.

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3 years ago

A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising th

erik [133]

Answer:

$P = 36068.7 Watt$

Explanation:

As we know that average power is the ratio of total work done and total time interval

so we will have

$Power = \frac{Total \: Work}{time}$

now we know that

$Work = \frac{1}{2}mv^2 + mgh$

$W = \frac{1}{2}(700)(11^2) + 700(9.8)(9.6)$

so we will have

$W = 42350 J + 68856 J$

$W = 108206 J$

now power is given as

$P = \frac{108206}{3}$

$P = 36068.7 Watt$

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3 years ago

during a crash, the acceleration was less than 30g. Calculate the force on a 70 kg person accelerating at this rate.

Igoryamba

Answer:

less than 20580 N

Explanation:

According to the newton's second law of motion

Force = mass * acceleration

(assuming gravitational acceleration =9.8 m/s2 )

acceleration = 30*9.8 = 294 m/s2

acting Force = 70 * 294

= 20580 N

Since the acceleration was less than 30g , acting force should also be less than 20580 N

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3 years ago

Un incendie s'est déclaré ce jeudi vers 18h30 dans un entrepôt de 2000m2 de l’usine Metalutex. Une entreprise de stockage de mat

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