According to newton's third law: every action has an equal and opposite reaction, so yes the ground does move backwards. You have 4 forces acting on you at any given time: pushing force, friction force, gravity, and normal force. you push against something to propel forward, you have to overcome gravity and friction, and normal force keeps things upright to prevent them from falling into each other.
<span>If everything is motionless at every instant, and time is entirely composed of instants, then motion is impossible, so it must be an illusion.
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if you really want things to get confusing you can read up on zeno's dichotomy paradox stating that there is infinate amount of times you can divide something such as a distance traveled over time and you will stil
C because you can't control the sun moving across the sky and therefore is not testable in an experiment.
Answer:
* angular momentum throughout the lar process is conserved throughout the entire process
* the angular velocity decreases as the radius of the pizza increases
Explanation:
The system formed by the masses is isolated so its angular momentum is conserved
initial instant, which throws the mass with angular velocity o and radius ro
L₀ = I w₀
final instant. When the mass has a radius r and an angular velocity w
L_f = I_f w
Lo = l_f
I₀ w₀ = I_f w_f
let's analyze this result
* angular momentum throughout the lar process is conserved throughout the entire process
* the angular velocity decreases as the radius of the pizza increases
Answer:
P = 760 torr
Explanation:
Significant figures give information on the pressure of a measurement, and is directly related to the appreciations of the instruments.
When we make several different measures, some have more significant figures than others, but the criterion that ae uses is that we must use it to have the least number of significant figures, since here is the error
In this case we have 3 significant figures so the pressure value must be
P= 759.5 torr = 760 torr
Notice that we have rounded the nine (9) since the following figure is greater than or equal to 5
Answer:
tensile stress = 55 x 10⁷ Pa
Explanation:
given,
radius of the copper wire = 4.1 mm = 0.0041 m
the wire stretches = 5.0×10⁻³ l
l = original length
young's modulus of copper = 11 x 10¹⁰ Pa
strain =
tensile stress = young's modulus x strain
tensile stress = 11 x 10¹⁰ x 5.0×10⁻³
tensile stress = 55 x 10⁷ Pa
The tensile stress on the wire is equal to 55 x 10⁷ Pa