D, releases a massive amount of energy as heat Hope this helps
Answer:
F = 0.768 i ^ - 0.576 j ^ + 0.24 k ^
the correct answer is "b"
Explanation:
The magnetic force is
F = i l x B
The bold are vectors, in this case they give us the direction of the current and the magnetic field, for which we can solve as a determinant
resolver
F = i ^ (4 12 - 0) + j ^ (0- 3 12) + k ^ (3 5 - 0)
F = i (48 i ^ - 36 j ^ + 15 k⁾
in this case i is the value of the current flowing through the cable
i = 16 mA = 0.016 A
F = 0.768 i ^ - 0.576 j ^ + 0.24 k ^
When reviewing the different answers, the correct answer is "b"
Answer:
a) Velocity = 4.2m/s
b) Acceleration = 2.94m/s^2
c) Force exerted on the floor= 1401.4×10^3N
Explanation:
a) Velocity,V=sqrt(2×9.8×0.900)
V= 4.2m/s
b) Vf2= V^2+2ay2
a= 4.2^2 - 0/2×3
a= 17.64/6= 2.94m/s^2
c) Newton's 2nd law indicates:
Fnet= F - mg=ma
F= m(g+a)
F=110(9.8+2.94)
F=110×12.94
F= 1401.4N
Explanation:
It is given that total distance is 3.65 m and times is 33.1 s. Therefore, calculate the average speed as follows.
Average speed =
=
= 0.11 m/s
Also, we know that
Average velocity =
Where, displacement means that how far final point is from the initial point, here, that is 0.0463 m.
Hence, calculate the average velocity as follows.
Average velocity =
= 0.0014 m/s
Thus, we can conclude that gnat's average speed is 0.11 m/s and magnitude of the gnat's average velocity is 0.0014 m/s.
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