Answer: Where the charged object is brought near but never contacted to the object being charged, conduction charging involves making the physical connection of the charged object to the neutral object. Because charging by conduction involves contact, it is often called charging by contact.
Real life example: A positively charged aluminum plate comes into contact with a neutral metal sphere
Explanation:
Answer:The lower the refractive index, the faster the velocity of light. Medium A has the smaller refractive index. Light will travel faster through medium A at a velocity equal to the speed of light divided by the refractive index.
Explanation:
THere ya go ! :)
Answer: 4 AU
Kepler's third law states that square of orbital period of a planet is proportional to the cube of the average distance from the Sun.
where, T is the orbital period, r is the average distance from Sun, G is the gravitational constant and M is the mass of the Sun.
If T is in Earth years, M is in Solar mass (1 Solar mass = mass of sun), r is in AU (astronomical unit) then:
Answer:
36.3 kgm2
Explanation:
According to the conservation of angular momentum, the angular momentum is preserved before and after the child grab. Since the moments of inertia increase, the angular velocity decreases.
Let I be the moment of inertia of the merry-go-round and treat the child as a point particle, his moment of inertia would be
Hence the moment inertia of the child-merry-go-round system is:
I + 55.5
From here we can apply the conservation theory
Answer:
B
Explanation:
i got it right on the usatestprep