Well, we usually assume that the resistance of a circuit component
is constant and doesn't change. But the truth is that for anything
that conducts current, its resistance always increases somewhat
when it warms up.
For things like light bulbs, electric toasters, space heaters, electric
stove burners, the heat coils in a blow-dryer ... anything that's
designed to be really hot when it's doing its job ... the resistance
of those things increases significantly when they come up to their
operating temperatures.
Answer:
Explanation:
The bodies in circular motions experience a force directed towards the center of the circular path called centripetal force.
The force is directed along the radius of the circular path.
The acceleration of the body is also directed along the radius.
The velocity of the rotating body at any instant is directed along the tangent line at the point.
The centripetal force is given by the formula
F = ½ mv²/r
Where,
v²/r = [/tex]a_{c}[/tex] - The centripetal acceleration
The centripetal acceleration can also written in terms of the time period of the rotation,
Hence, the answer is
Refer to the diagram shown below.
Define
= unit vector in the eastern direction
= unit vector n the northern drection.
Then the displacement vectors are
Vector #1:
Vector #2:
Vector #3:
Because the vector sum of all three vector is zero, therefore
1381.1 +0.6561a - 0.891b = 0
703.7 - 0.9873a + 0.454b = 0
That is,
0.6561a - 0.891b = -1381.1 (1)
-0.9873a + 0.454b = -703.7 (2)
From (1), obtain
b = 0.7364a + 1550.1 (3)
Substitute (3) into (2).
-0.9873a + 0.454(0.7364a + 1550.1) = - 703.7
-0.653a = -1407.4
a = 2155.3 mles
From (3), obtain
b = 3137.2 mles
Answer:
The magnitudes of the two displacement vectors are
2155.3 miles and 3137.2 miles.
Answer:
C
Explanation:
25% is two half lives.
Each half life requires 5730 years.
So two half lives requires
2
×
5730
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