Answer:
ω₂ = 5.578 rads⁻¹
Explanation:
The moment of inertia of,
turn table =
block =
By the law of conservation of angular momentum, as no external torque acts on system the total angular momentum of the system when block sits at center and when block at the outer edge must be same.
Also to find ω, ω = 2πf where f is rpm
= 2π×63/60 = 6.597
So
I₁ω₁ = I₂ω₂
( + )×6.597 = ( + )×ω₂
ω₂ = 5.578 rads⁻¹
Lose electrons because they have a negative charge.
Answer:
Explanation:
<u><em>Given:</em></u>
Mass = m = 100 kg
Acceleration due to gravity = g = 1.62 m/s²
<u><em>Required:</em></u>
Weight = W = ?
<u><em>Formula:</em></u>
W = mg
<u><em>Solution:</em></u>
W = (100)(1.62)
W = 162 N
<h2>
Answer: 502.08 J</h2>
Explanation:
The heat (thermal energy) needed in to raise the temperature in a process can be found using the following equation:
(1)
Where:
is the heat
is the mass of the element (<u>water</u> in this case)
is the specific heat capacity of the material. In the case of water is
is the variation in temperature <u>(which is increased in this case)</u>
Knowing this, let's rewrite (1) with these values:
(2)
Finally:
Stage 2 sleep shows Theta waves