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weqwewe [10]
3 years ago
6

Newtons third law says that if Robert exerts a _______ of 1000 Newtons on an object, it will exert an equal and opposite _______

__on him.
Question 4 options:

force, force


force, mass


force, acceleration


force, inertia
Physics
1 answer:
Free_Kalibri [48]3 years ago
7 0

Answer: force, force

Explanation:

Newton’s third law states that there is an equal and opposite force

I took the test too

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3 years ago
Three identical train cars, coupled together, are rolling east at 1.8 m/s . A fourth car traveling east at 4.5 m/s catches up wi
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Answer:

v = 1.98\ m/s

Explanation:

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u₁ = u₂ = u₃ = 1.8 m/s

m₄ = m             u₄ = 4.5 m/s

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final velocity

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using conservation of momentum

m₁u₁ + m₂u₂ + m₃u₃ + m₄u₄ + m₅u₅ = m₁v₁ + m₂v₂ + m₃v₃ + m₄v₄ + m₅v₅

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5 0
3 years ago
An unknown substance has a mass of 0.125 kg and an initial temperature of 95.0°C. The substance is then dropped into a calorimet
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Answer:

c = 1163.34 J/kg.°C

Explanation:

Specific heat capacity:

"Specific heat capacity is the amount of heat energy required to raise the temperature of a substance per unit of mass. The specific heat capacity of a material is a physical property."

Use this equation:

mcΔT = ( mw c + mAl cAl )  ΔT'

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c = (( mw c + mAl cAl )  ΔT') / (mΔT)

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