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Kamila [148]
3 years ago
7

A force of 20 N acted on a 5 kg object, moving it a distance of 4 m. How much work was done on the object?

Physics
1 answer:
Maksim231197 [3]3 years ago
5 0

Answer:

400J

Explanation:

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The function of the ___________________ system is to keep the human species on this planet.
Talja [164]
The function of the "Reproductive" <span>system is to keep the human species on this planet.

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4 0
4 years ago
A cosmic ray muon with mass mμ = 1.88 ✕ 10−28 kg impacting the Earth's atmosphere slows down in proportion to the amount of matt
anyanavicka [17]

Answer:

a. the magnitude of the force experienced by the muon is 2.55 × 10⁻¹⁹N

b.  this force compare to the weight of the muon; the force is 1.38 × 10⁸ greater than muon

Explanation:

F= ma

v²=u² -2aS

(1.56 ✕ 10⁶)²=(2.40 ✕ 10⁶)²-2a(1220)

a=1.36×10⁹m/s²

recall

F=ma

F = 1.88 ✕ 10⁻²⁸ kg × 1.36×10⁹m/s²

F= 2.55 × 10⁻¹⁹N

the magnitude of the force experienced by the muon is 2.55 × 10⁻¹⁹N

b.  this force compare to the weight of the muon

F/mg= 2.55 × 10⁻¹⁹/ (1.88 ✕ 10⁻²⁸ × 9.8)

= 1.38 × 10⁸

6 0
3 years ago
A child walks 5m east, then 3m north, then 1m east. What is the magnitude of the child's displacement? What is the direction of
kykrilka [37]
You should first break up all the distances and directions into vectors and then add all horizontal vectors and verticle vectors. 
He goes, 5 + 1 m east = 6m East
3 m north
displacement = root(6^2 + 3^2) = 6.708m
direction = arcTan(verticle/horizontal) = arcTan(3/6) = 26.565 degrees
7 0
3 years ago
The body system responsible for absorbing chemical energy from food is the-
fredd [130]
I think the answer is digestive system

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8 0
4 years ago
Problem 4:
Olegator [25]

Answer:

v2^2 - v1^2 = 2 g s        fundamental formula

v2 = v1 + 2 g    = v1 + 19.8         increase in velocity in 2 sec

v1^2 + 39.6 v1 + 392 - v1^2 = 2 * 9.8 * 123.1 = 2412.76

v1 = (2412.76 - 392) / 39.6 = 51.03

v2 = 51.03 + 19.6 = 70.63

T = 70.63 / .8 = 7.207 sec     time to fall height of tower

S = 1/2 g T^2 = 4.9 * 7.207^2 = 254.5 m

(Note  v2^2 - v1^2 = 70.63^2 - 51.03^2 = 2385 m

2385 / (2 * 9.8) = 122 m (close to 123.1    as was given

6 0
3 years ago
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