Complete Question
A system consists of a disk of mass 2.0 kg and radius 50 cm upon which is mounted an annular cylinder of mass 1.0 kg with inner radius 20 cm and outer radius 30 cm (see below). The system rotates about an axis through the center of the disk and annular cylinder at 10 rev/s.
(a) What is the moment of inertia of the system
(b) What is its rotational kinetic energy? axis 50 cm 30 cm 20 cm
Answer:
a)
b)
Explanation:
From the question we are told that:
Mass
Disk Radius
Mass of annular cylinder
Inner Radius of cylinder
Outer Radius of cylinder
Angular Velocity
Generally the equation for moment of inertia is mathematically given by
Generally the equation for Rotational Kinetic Energy is mathematically given by
I believe its 17,000 blood cells in your body
Such questions are not at all difficult... You must have patience as well good at trigonometry.. rest it depends whether you are cleared with concepts or not. Practice such questions daily you'll be master then. Hope you are able to see my solution :)
Answer:
Charge, q = 900 C
Explanation:
It is given that,
Current flowing through the circuit, I = 6 A
Time for the flow of current, t = 2.5 minutes = 150 seconds
We have to find the charge delivered to this circuit. The total charge per unit time is called the current flowing through the circuit. It q is the charge flowing, then :
q = I × t
q = 6 A × 150 s
q = 900 coulomb
So, 900 coulomb of charge is delivered to this circuit.
Answer:
One of the leading theories of hot-Jupiter formation holds that gas giants in distant orbits become hot Jupiters when the gravitational influences from nearby stars or planets drive them into closer orbits. They formed as gas giants beyond the frost line and then migrated inwards.
Explanation:
In the migration hypothesis, a hot Jupiter forms beyond the frost line, from rock, ice, and gases via the core accretion method of planetary formation. The planet then migrates inwards to the star where it eventually forms a stable orbit. The planet may have migrated inward smoothly via type II orbital migration.
Hot-Jupiters are heated gas giant planets that are very close to their stars, just a few million miles distant and orbiting their stellar hosts in just a few days. The reason why there isn't one in our Solar System is down to its formation. All gas giants form far from their star but then some migrate inwards.
Hot-Jupiters will just happen to transit about 10% (that is, since orbital planes) this is consistent with the rate expected from geometry of . The actual frequencies of hot Jupiters around normal stars is surprisingly hard to figure out.