Answer:
The sphere C carries no net charge.
Explanation:
- When brougth close to the charged sphere A, as charges can move freely in a conductor, a charge equal and opposite to the one on the sphere A, appears on the sphere B surface facing to the sphere A.
- As sphere B must remain neutral (due to the principle of conservation of charge) an equal charge, but of opposite sign, goes to the surface also, on the opposite part of the sphere.
- If sphere A is removed, a charge movement happens in the sphere B, in such a way, that no net charge remains on the surface.
- If in such state, if the sphere B (assumed again uncharged completely, without any local charges on the surface), is touched by an initially uncharged sphere C, due to the conservation of charge principle, no net charge can be built on sphere C.
Answer:
Explanation:
doubling the speed will have a greater impact on kinetic energy as KE is a product of mass and the square of velocity.
KE = ½mv²
Base KE = ½(0.005)2.0² = 0.01 J
doubling the mass
KE = ½(0.010)2.0² = 0.02 J
doubling the velocity
KE = ½(0.005)4.0² = 0.04 J
Hello!
I believe the answer is
A) if the mixture is a solid suspended in a gas
Answer:
Impulse will be 8.4788 kgm/sec
Explanation:
We have given mass of the ball m = 0.212 kg
Initial velocity u = 18.8 m/sec
We know that momentum P = mass×velocity
Taking initial velocity as negative
So initial momentum = 0.212×-18.8 = -3.9856 kgm/sec
Final velocity is given as v = 21.2 m/sec
So final momentum = 0.212×21.2 = 4.4944 kgm/sec
We know that impulse is given by change in momentum
So impulse = final momentum-initial momentum = 4.4944-(-3.9844 ) = 8.4788 kgm/sec
velocity is given as
when the object reached to its turning its velocity will be zero
so it will reach its turning at two time instant
Part b)
For acceleration we know that
now at t = 2
also at t=5
