The answer is <span>thermoplastics
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Ep = F * d
F = 20 N
d = 5 m
Ep = 20 N * 5 m
Ep = 100 J
So pick B. A Newton Meter is a joule.
Answer:
Explanation:
Given that,
Charge through a wire is
Q = 4000C
Time for charge to pass through the wire is
t = 50seconds
Then,
Current through the wire is the rate of charge passing through the wire
Q = it
Where
Q is charge.
I is current
t is time taken
Therefore,
I = Q / t
I = 4000 / 50
I = 80 Amps
The final momentum of the system would be 6680 Kg m/s
<h3>What is momentum?</h3>
It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.
Mathematically the formula of the momentum is
P = mv
Two cars are driving toward each other in a straight line. Car A is 1400 kg and driving at 11 m/s. Car B is 1090 kg and driving at 8 m/s. If the two cars collide inelastically, As we know that the momentum of a system is conserved during the collision
initial momentum = final momentum
the initial momentum of the system = 1400 ×11 + 1090×(-8)
= 6680 Kg m/s
The final momentum of the system = 6680 Kg m/s
Thus,The final momentum of the system would be 6680 Kg m/s
Learn more about momentum from here
brainly.com/question/17662202
#SPJ1
Resistance
R
of a conducting wire of length
l
and of area of cross section
A
is given by the expression
R
=
ρ
l
A
where
ρ
is resistivity or specific resistance of the material of the conductor.
Inserting given values in the expression in SI units we get
34
=
(
1.7
×
10
−
8
)
l
π
(
0.1
1000
)
2
4
⇒
l
=
34
1.7
×
10
−
8
×
π
4
(
0.1
1000
)
2
⇒
l
=
15.71
m
, rounded to two decimal places.
