For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 81 N acts on
a certain object, the acceleration of the object is 9 /ms2 . If the acceleration of the object becomes 2/ms2 , what is the force?
1 answer:
Answer:
18 N
Explanation:
You have to do:
81 N: 9 ms2= x: 2 ms2
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Answer:
7.344 s
Explanation:
A = 0.15 x 0.3 m^2 = 0.045 m^2
N = 240
e = - 2.5 v
B1 = 0.1 T
B2 = 1.8 T
ΔB = B2 - B1 = 1.8 - 0.1 = 1.7 T
Δt = ?
e = - dФ/dt
e = - N x A x ΔB/Δt
- 2.5 = - 240 x 0.045 x 1.7 / Δt
2.5 = 18.36 / Δt
Δt = 7.344 s
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