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<span>Work=effective force x distance = 300cos36. 100 ft.lb.</span>
Answers:
a) 9.035 s
b) -88.543 m/s
Explanation:
The described situation is related to vertical motion (especifically free fall) and the equations that will be useful are:
(1)
(2)
Where:
is the final height of the steel ball
is the initial height of the steel ball
is the initial velocity of the steel ball (it was dropped)
is the final velocity of the steel ball
is the time it takes to the steel ball to reach the ground
is the acceleration due to gravity
<u>Knowing this, let's begin with the answers:</u>
<h2>a) Time it takes the steel ball to reach the ground</h2>
We will use equation (1) with the conditions listed above:
(3)
Isolating
:
(4)
(5)
(6)
<h2>b) Final velocity of the steel ball</h2>
We will use equation (2) with the conditions explained above and the calculaated time:
(7)
(8)
(9) The negative sign indicates the direction of the velocity is downwards
Answer:
Ty's blood is slightly alkaline
Explanation:
Answer:

Explanation:
The magnitude of the magnetic field on the axis of the ring is given by:

is the permeability of free space,
is the flowing current through the ring,
is the ring's radius and
is the distance to the center of the ring.
The flowing current through the ring is defined as the ring's charge divided into the time taken by the charge to complete one revolution, that is, the period
. So, we have:

Now, replacing in (1):
