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Rainbow [258]
4 years ago
11

1.

Physics
1 answer:
Genrish500 [490]4 years ago
8 0
Divide and then you should get your answer
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After 20 seconds, a 200-kg object increases its velocity from 15 m/s to 40 m/s. Determine the impulse applied to the object. (Al
sleet_krkn [62]

Answer:

Imp_{1-2}=5000[kg*m/s]

Explanation:

In order to solve this problem, we must use the principle of conservation of momentum, which is defined as the product of mass by Velocity.

It must be defined that the impulse after the force is applied is equal to the momentum before the impulse applied on the body.

ΣPbefore = ΣPafter

P = momentum = m*v [kg*m/s]

In this way, we will construct the following equation.

(m_{1}*v_{1})+ Imp_{1-2}=(m_{1}*v_{2})

where:

m₁ = mass of the object = 200 [kg]

v₁ = velocity of the object before the impulse = 15 [m/s]

v₂ = velocity of the object after the impulse = 40 [m/s]

Now replacing:

(200*15) + Imp_{1-2} = (200*40)\\Imp_{1-2}=5000[kg*m/s]

7 0
3 years ago
Which is an example of a physical change?
levacccp [35]

Answer:

salt dissolving

Explanation:

hope it helps

5 0
3 years ago
Read 2 more answers
Numerical problems:
Hatshy [7]

Answer:

this is answer please mark me as brainlest

Explanation:

A force of 500N acts on the area of 2.5m2; calculate the pressure

exerted,

(Ans: 200 Pa]

b. Calculate the force applied when 400 Pa of pressure is exerted by a box

of surface area 2m2.

(Ans: 800 N]

The weight of a stone is 1400N. If it exerts a pressure of 700 Pa, calculate

the area.

(Ans: 2m]

d. A force of 2000 N acts on 5m² surface area. Calculate the pressure

exerted.

(Ans: 400 Pa]

c.​

7 0
3 years ago
My older son Ben is quite a good juggler. He got in some trouble once when he left a set of clear acrylic juggling balls, like t
cluponka [151]
Because he left the clear acrylic balls in the sun for a long time so they could have melted a bit so that would be why you got mad at him

8 0
3 years ago
What is the cooling power P? Recall that the rate at which energy is removed, also called the cooling power, was described earli
gayaneshka [121]

Answer:

36.667

Explanation:

(2.2*10^4)/(10*60)

3 0
3 years ago
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