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saul85 [17]
3 years ago
8

PLZ HELP 30 PNTS AND BRAINLIST IF CORRECT! (accidentally put 10 pnts, i get u the points if u get the answer right)

Physics
2 answers:
Rus_ich [418]3 years ago
7 0

Answer:

the net force is acting upon the object. The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude. Hope this helps you.

RideAnS [48]3 years ago
5 0

Answer:

3 N towards right            

Explanation:

Force is a vector quantity. It has both magnitude and direction. In vertical direction, the weight of the box is balanced by the normal force acting on the box. Thus, in vertical direction,

4 N - 4 N =0

net force = 0

In Horizontal direction,

5 N - 2 N = 3 N

Thus, net force on the box is 3 N towards right.

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An arrow of mass 415 g is shot at a target with a speed of 68.5m/s. The target, which has a mass of 3.3 kg, is moving toward the
Murrr4er [49]

The velocity of the target and arrow after collision is 6.67m/s

<u>Explanation:</u>

Given:

Mass of arrow, mₐ = 415g

Speed of arrow, vₐ = 68.5m/s

Mass of the target, mₓ = 3.3kg = 3300g

speed of the target, vₓ = -1.1m/s (Because the target moves in opposite direction

Velocity of the target and arrow after collision, vₙ = ?

Applying the conservation of momentum,

mₐvₐ + mₓvₓ = (mₐ+mₓ) vₙ

415 X 68.5 + 3300 X -1.1 = (415+3300) X vₙ

28427.5 - 3630 = 3715 X vₙ

24797.5 = 3715 X vₙ

vₙ = 6.67m/s

Therefore, the velocity of the target and arrow after collision is 6.67m/s

4 0
3 years ago
How is heat related to phase changes​
bekas [8.4K]

The heat is used to break the bonds between the ice molecules as they turn into a liquid phase. Since the average kinetic energy of the molecules does not change at the moment of melting, the temperature of the molecules does not change.

7 0
3 years ago
during a journey, a car travels at 40 km in 2.5 hours, next 62 km in 3 hours, then took a break for 30 minutes, again travelled
wlad13 [49]
45mph is the answer if you do the math right
6 0
3 years ago
1. What were the 3 basic concepts of government that the English brought with them to North America?
aev [14]

Answer:

1)limited system of government

2)representative system of government

3)individual rights system of government

Explanation:

the 3 basic concepts of government that the English brought with them to North America are listed in the answer

7 0
3 years ago
Light waves from the sun can travel trough outer space and reach the earth
konstantin123 [22]

Answer:

this is true

Explanation:

7 0
3 years ago
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