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Bess [88]
3 years ago
13

Calculate the man’s mass. (use pe = m × g × h, where g = 9.8 n/kg.) a man climbs a wall that has a height of 8.4 meters and gain

s a potential energy of 4,620 joules. his mass is about kilograms.
Mathematics
1 answer:
Helen [10]3 years ago
8 0
Potential energy is a stored energy, which  is caused by the gravitational pull of the earth, that is why when you go up the potential energy will increase. to calculate the mass, just substitute the given to the formula and solve for m

PE = m x g x h
4620 = m x 9.8 x 8.4
m = 4620 / ( 9.8 x 8.4)
m = 56.1 kg is thr mass of the man
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hjlf

Answer: 3.82 miles

Step-by-step explanation:

According to the shown figure, we can imagine the scene as a <u>right triangle</u>, where the tower is located at the right angle, and the fireman and the forest fire located at each of the other two vertices.

So, since we are dealing with a right triangle we can use the Pithagorean Theorem, in order to find the distance from the fireman to the fire d, which is also the hypotenuse.

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d=\sqrt{(2.1 miles)^{2} +(3.2 miles)^{2}}

Finally:

d=3.82 miles

7 0
4 years ago
Jessica wants to buy a new chair that has a regular price of $75.00 this week the chair will be on sale at a 12% discount how mu
Novosadov [1.4K]

Answer: $9.

Step-by-step explanation:

It is given that,

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8 0
3 years ago
PLZ help me this is hard
Assoli18 [71]

Answer:

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Step-by-step explanation:

4 0
3 years ago
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Answer:

y = 3

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Step-by-step explanation:

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3 0
3 years ago
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Answer:

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4 0
3 years ago
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