Answer:
Explanation:
Let the magnetic field be B = B₁i + B₂j + B₃k
Force = I ( L x B ) , I is current , L is length and B is magnetic field .
In the first case
force = - 2.3 j N
L = 2.5 i
puting the values in the equation above
- 2.3 j = 8 [ 2.5 i x ( B₁i + B₂j + B₃k )]
= - 20 B₃ j + 20 B₂ k
comparing LHS and RHS ,
20B₃ = 2.3
B₃ = .115
B₂ = 0
In the second case
L = 2.5 j
Force = I ( L x B )
2.3i−5.6k = 8 ( 2.5 j x (B₁i + B₂j + B₃k )
= - 20 B₁ k + 20B₃ i
2.3i−5.6k = - 20 B₁ k + 20B₃ i
B₃ = .115
B₁ = .28
So magnetic field B = .28 i + .115 B₃
Part A
x component of B = .28 T
Part B
y component of B = 0
Part C
z component of B = .115 T .
Answer:
a) 482.5N
b) 17.4N
Explanation:
40 rev/min = 40 * 2π / 60 = 4.2 rad/s
3 rev/min = 3 * 2π / 60 = 0.314 rad/s
The centripetal acceleration that the child is subjected to
And their centripetal force is
From here we can plug the number in
(a)
(b)
Answer:
17 N
Explanation:
Constant velocity means acceleration is 0.
If acceleration is 0, then the net force is 0. Which means the i components add up to 0, the j components add up to 0, and the k components add up to 0.
0 = 2.0 N − 8.0 N + Fi
Fi = 6.0 N
0 = 4.0 N + 9.0 N + Fj
Fj = -13 N
0 = -2.0 N − 8.0 N + Fk
Fk = 10. N
The magnitude of the force is:
F² = Fi² + Fj² + Fk²
F² = (6.0 N)² + (-13 N)² + (10. N)²
F = √305 N
F ≈ 17 N
Teaching students about water being not very useful when they are learning
about the states of matter is False.
<h3>States of Matter</h3>
We have three states of matter which include:
Water is regarded as a universal solvent and the most abundant liquid on
earth. It helps to discover the different relationships and bonding that occurs
in substances which are polar and non-polar.
It also has three different states of matter which helps to explain the topic
and they include:
Read more about Water here brainly.com/question/5060579