Answer:
Explanation:
I=Q2- Q1
And I = F. (t2-t1)
t = 0,32s
v = 8,5 m/s
Q = m.v
Q=66,5.8,5 = 565,25 kg.m/s
F. (t2-t1) = 565,25
F.0,32 = 565,25
F = 1766,4 N
Answer:
ρ = 4.4 10⁻⁸ Ω m
Explanation:
For this exercise let's start by finding the value of the resistance using Ohm's law
V = I R
R = V / I
The voltage is related to the electric field
V = E L
let's substitute
R = E L / I
R = 8.2 10⁻² / 20
R = 4.1 10⁻³ L
now we can use the resistance relation
R = ρ L / A
the area of a circular wire is
A = π r² = π d² / 4
ρ = R π d² / (4 L)
let's calculate
ρ = (4.1 10⁻³ L) π 0.0037² / (4 L) = (4.1 10⁻³) π 0.0037² / (4)
ρ = 4.4 10⁻⁸ Ω m
Answer:
The force and texture of an object matter a lot.
Explanation:
If you were to try and run up a glass hill, could you? You maybe could, but it would be harder to than up carpet.
Answer:
The time is
Explanation:
From the question we are told that
The diameter of the circular saw is
The peripheral speed is
The time taken for the blade to come to rest is t = 17 s
The total acceleration of the tooth considered is
Generally the radius of the blade is mathematically represented as
Generally the tangential acceleration of the blade is mathematically represented as
Here v is the final velocity of the tooth of the blade which is zero since the blade came to rest
so
=>
Generally the total acceleration of the tooth of the blade is mathematically represented as
Here is the radial acceleration , now making the subject of the formula we have that
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Generally radial acceleration is mathematically represented as
Here is the velocity at which the total acceleration is 130 ft/s2.
=>
=>
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Generally the time at which the total acceleration is 130 ft/s2. is mathematically represented as
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Answer:
hand trowel
Explanation:
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