Answer:
<em>The vertical acceleration is -9.81 m/s^2</em>
Explanation:
When a body is projected, the body experiences an acceleration in the vertical axis that is proportional to the acceleration due to gravity of the earth, which is equal to 9.81 m/s^2. In this case, the acceleration acts to stop the vertical motion of the paper plane, and hence is a deceleration, which explains the negative vertical acceleration.
Answer:
ω = 2.9 rad/s, v = 31.7 m/s, α = 0.78 rad/s², a = 91,6 m/s²
Explanation:
I will assume the given equation reads as Ф = 0.39t².
The angular velocity ω is the time derivative of Ф.
ω = 0.78t
The linear velocity v is given by ωr, where r is the radius of the centrifuge.
v = 0.78t r
The tangential acceleration α is the time derivative of ω.
α = 0.78
The radial acceleration a is given by: a = ω²r
a = (0.78t)²r
Attractive Property – Magnet attracts ferromagnetic materials like iron, cobalt, and nickel.
Repulsive Properties – Like magnetic poles repel each other and unlike magnetic poles attract each other.
Directive Property – A freely suspended magnet always points in a north-south direction.
Have a good day!
Answer:
Radio waves
Explanation:
Radio waves have the longest wavelength.
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