A team of bicyclists are on bikes that require 512 J of work to ride. It takes 432 J of work for the bike to turn the gears. Wha
1 answer:
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Answer:
Explanation:
Let the charge on bead A be q nC and the charge on bead B be 28nC - qnC
Force F between them
4.8\times10^{-4} =
=120 x 10⁻⁸ = 9 x q(28 - q ) x 10⁻⁹
133.33 = 28q - q²
q²- 28q +133.33 = 0
It is a quadratic equation , which has two solution
q_A = 21.91 x 10⁻⁹C or q_B = 6.09 x 10⁻⁹ C
Answer:
a) Knowns, initial speed , final speed
and gravity due it is a constant
b) The maximum high reached by the dolphin is
c) Total time is
Explanation:
a) First of all the initial speed is given at the start of the problem, gravity is constant and final speed is known any object thrown straight up reaches its max high at speed.
b) Second, now that we know final speed we use , as we clear for
.
Then we use
c)Third, finally we can use , as we know
when the dolphin fall into the water again and
, then we have
is a quadratic form
so we have
and