Two lifeguards pull on ropes attached to a raft. If they pull in the same direction, the raft experiences a net external force o
1 answer:
Explanation:
Let is the two forces acting on the raft. If they pull in the same direction, the net force is given by :
...............(1)
If they pull in opposite direction, net force is given by :
...............(2)
It is required to find the magnitude of both forces. On solving equation (1) and (2) we get :
So, the forces are 207.5 N and 92.5 N. Hence, this is the required solution.
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Answer:
distance r from the uranium atom is 18.27 nm
Explanation:
given data
uranium and iron atom distance R = 44.10 nm
uranium atom = singly ionized
iron atom = doubly ionized
to find out
distance r from the uranium atom
solution
we consider here that uranium electron at distance = r
and electron between uranium and iron so here
so we can say electron and iron distance = ( 44.10 - r ) nm
and we know single ionized uranium charge q2= 1.602 × C
and charge on iron will be q3 = 2 × 1.602 × C
so charge on electron is q1 = - 1.602 × C
and we know F =
so now by equilibrium
Fu = Fi
=
put here k = and find r
=
r = 18.27 nm
distance r from the uranium atom is 18.27 nm