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Fantom [35]
3 years ago
8

On a cold winter day, a penny (mass 2.50 g) and a nickel (mass 5.00 g) are lying on the smooth (frictionless) surface of a froze

n lake. With your finger, you flick the penny toward the nickel with a speed of 2.00 m/s .
Physics
1 answer:
aleksklad [387]3 years ago
8 0
Ey64udnhsufifjyueuhhekr
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how much heat is produced in one hour by an electric iron which draws 2.5ampere when connected to a 100V supply​
love history [14]

Explanation:

I=2.5 Ampere ; V=100V ;t = 1 hour=60secs

We know Heat = VIt

H=100×2.5×60=15,000J

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2 years ago
g An object with mass 1kg travels at 3 m/s and collides with a stationary object whose mass is 0.5kg. The two objects stick toge
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Answer:

2

Explanation:

since the second object was in it stationary, it velocity is 0 m/s

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Hey guys. What is physically?<br><br> Help me to find a moderator!!!! Please.
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Answer:

Physical indicates connected with, pertaining to, the animal or human body as a material organism: physical strength, exercise. Bodily means belonging to, concerned with, the human body as distinct from the mind or spirit: bodily pain or suffering.

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Uncle Harry weighs 80 newtons. What is his mass in<br> kilograms?
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You are sitting 3 m away from you friend who is watching a cartoon on his phone. How will the sound itensity change if your frie
Zinaida [17]

Answer:

Decreases by $3.6 \times 10^{-3}$ times

Explanation:

The intensity of a sound is defined as the energy of the sound that is flowing in an unit time through the unit area which is in the direction that is perpendicular to the direction of the sound waves movement.

The intensity of energy is described by the inverse square law. It states that the intensity varies inversely with the distance square of the distance.

In other words, the sound intensity decreases as inversely proportional to the squared of the distance.  i.e. $\frac{1}{r^2}$

In the context when the distance was 3 m, the intensity of the sound was = $\frac{1}{9}$

But when the distance became 6 cm or 0.06 m, the sound intensity decreases by =  $\frac{1}{0.06^2}$

                       = $3.6 \times 10^{-3}$ times

3 0
3 years ago
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