Answer:
<em><u>0</u></em><em><u>.</u></em><em><u>9</u></em><em><u>1</u></em>
Explanation:
as equivalence resistance can be found out using the
1/Req = 1/r1 +1/r2 +1/r3......
now, 1/req= 1/2+1/3+1/4
=6/12+4/12+3/12
=13/12
i.e, req =12/13 =0.91
✌️:)
Answer:
the force it exert on track is
46600N
Explanation:
The car acceleration
a = V²/R
= (18.0m/s)²/(24.0)
= 13.5m/s²
net force
F(net) = m * a
= 2000kg * 13.5m/s²
= 27000N
F(net) = F₀ - F₁
where
F₀ = upward force
F₁ = downward force
F₁ = m * g
= (2000kg) * (9.8m/s²)
= 19600N
upward force which is F₀
F₀ = F(net) + F₁
= 27000N + 19600N
= 46600N
Answer:
N1 / N2 = 1.0016
Explanation:
The apparent weight of the student is the value that a balance would have this corresponds in this case to the normal of the student. Let's write Newton's second law in the lower and upper part of the loop
For lower rotating wheel
N1 - W = m a
a = v² / r
N1 = W + v² / r
The relationship between linear and angular velocity is
v = w r
As the wheel rotates at a constant speed, we can use angular kinematics
w = θ / t
θ = 3 rev (2π rad / 1rev) = 6π rad
w = 6π / 150
w = 0.04π rad / s = 0.1257 rad / sec
calculate
N1 = mg + w² r
N1 = 55 9.8 + 0.1257² 27
N1 = 539 + 0.4267
N1 = 539.426 N
Now we perform the same calculation for the top
-N2 - W = -m a
N2 = -W + ma
N2 = 539 - 0.4267
N2 = 538.5733 N
The relationship between the weight at the bottom and top is
N1 / N2 = 539.4267 / 538.5733
N1 / N2 = 1.0016
Answer:
B, produces animals that can yield greater amounts of milk, meat, or eggs
Explanation:
it is the only answer that is a positive outcome of selective breeding
Answer:
Density of the object is
Density of the oil is
Explanation:
Given Information:
Part one: Find the density of the object
To find the volume of an object we use
Where is the Buoyant force and is the density of the object
The Buoyant force is given by
The density of water is
Therefore Volume will be
Mass of the object is given by
Density of the object is given by
Part two: Find the density of the oil
The Buoyant force is given by
Rearranging above equation yields