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viktelen [127]
2 years ago
14

4. What are three tips parents can use to improve communication with their children? Discuss one that you think is most importan

t
Physics
1 answer:
Mumz [18]2 years ago
4 0
Have them give up there phone for 15 minutes
talk to them when there in a good mood
watch a movie then have a disscution about it



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Which quantity can be calculated using Newton’s second law of motion?
DiKsa [7]

Newton's 2nd law of motion:

          Net Force  =  (mass) x (acceleration) .

The law shows the relationship among an object's mass
and acceleration, and the net force acting on it.

If you know any two of the quantities in the formula,
the law can be used to calculate the third one.
3 0
2 years ago
During an experiment of momentum, trolley, X, of mass (2.34 ± 0.01) kg is moving away from another trolley, Y, of mass (2.561 ±
Alla [95]

Answer:

P = 1 (14,045 ± 0.03 )  k gm/s

Explanation:

In this exercise we are asked about the uncertainty of the momentum of the two carriages

            Δ (Pₓ / Py) =?

 Let's start by finding the momentum of each vehicle

car X

        Pₓ = m vₓ

        Pₓ = 2.34 2.5

        Pₓ = 5.85 kg m

car Y

        Py = 2,561 3.2

        Py = 8,195 kgm

How do we calculate the absolute uncertainty at the two moments?

          ΔPₓ = m Δv + v Δm

          ΔPₓ = 2.34 0.01 + 2.561 0.01

          ΔPₓ = 0.05 kg m

         ΔP_{y} = m Δv + v Δm

         ΔP_{y} = 2,561 0.01+ 3.2 0.001

         ΔP_{y} = 0.03 kg m

now we have the uncertainty of each moment

          P = Pₓ / P_{y}

          ΔP = ΔPₓ/P_{y} + Pₓ ΔP_{y} / P_{y}²

          ΔP = 8,195 0.05 + 5.85 0.03 / 8,195²

          ΔP = 0.006 + 0.0026

          ΔP = 0.009 kg m

The result is

           P = 14,045 ± 0.039 = (14,045 ± 0.03 )  k gm/s

7 0
3 years ago
Who does more work - a man who lifts a large box from the ground up into the back of a truck, or a man who puts the same box on
Viefleur [7K]
Answer :
The man who uses the trolley
4 0
3 years ago
Joe places two solid objects in contact with each other.
Tasya [4]

Answer:

B. temperature of the objects

5 0
2 years ago
A bottle 5.89 cm tall is 56.2 cm to the left of a plane mirror. What is the height of the image formed?
Hoochie [10]

Answer:

5.89cm

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4 0
2 years ago
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