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Tanya [424]
3 years ago
10

What is the mass of a person who has a weight of 647N? Will mark brainliest if u help me!!

Physics
1 answer:
Stels [109]3 years ago
7 0

Answer: i think thats the answer

≈

40.8

kg

Explanation:

Well, assuming the boy is on Earth, then the gravitational acceleration is approximately

9.8

m/s

2

.

So, we get:

m

=

W

g

=

400

N

9.8

m/s

2

≈

40.8

kgExplanation:

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Boston Red Sox pitcher Roger Clemens could routinely throw a fastball at a horizontal
azamat

Answer: 0.145 seconds

Explanation:

Given that Roger Clemens could routinely throw a fastball at a horizontal speed of 119.7 m/s. How long did the ball take to reach home plate 17.3 m away

Since the speed is horizontal

Using the formula for speed which is

Speed = distance/time

Where

Speed = 119.7 m/s

Distance covered = 17.3 m

Time is what we are looking for

Substitute all the parameters into the formula

119.7 = 17.3/ time

Make time the subject of formula

Time = 17.3 / 119.7

Time = 0.145 seconds.

Therefore, it will take 0.145 seconds to reach the home plates

6 0
3 years ago
Any fracture or system of fractures along which Earth moves is known as a
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Any fracture or system of fractures along which Earth moves is known as a D.fault.

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3 0
3 years ago
Help me quick!!! please!!
Rudik [331]

Answer:

39.240 W

Explanation:

Let's start by calculating the work done by the engine. We can assume that it is the same work done by the weight of the object to bring it from 40m to the surface: as much energy it takes to bring it up, the same ammount it takes to bring it down. Said work is w= \vec F\cdot \vec{h} = mg h = 1000 \times 9.81\times 40 = 392.400 J

At this point we can simply apply the definition of power, that is P = \frac wt, to get the power of the engine is 39.240 W

4 0
3 years ago
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You are walking along a small country road one foggy morning and come to an intersection. While you are crossing, you hear an am
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Since the frequency of sound heard is higher than actual frequency, the ambulance is moving towards you!

The frequency of sound waves as heard from a distance for a sound wave coming towards one at v₀ m/s and whose real frequency is f₀ is given by

+f = f₀/[1 - (v₀/v)]

+f = frequency of sound as heard from the distance away = 8.61 KHz

f₀ = real frequency of sound = 7.87 KHz

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v = velocity of sound waves = 343 m/s

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