The correct answer is C.)
It has made road vehicles safer because magnetometers are used to detect particles found in radiation emitted during combustion of fuel.
h a v e a g r e a t d a y
41.2 = h-1/2g(t-1)^2
<span> {-h = -1/2gt^2-1/2g+g*t-41.2
</span><span> {h = 1/2gt^2
</span><span> summing them up
</span><span> 0 = -1/2g+g*t-41.2
</span><span> 41.2 +4.9 = g*t
</span><span> t = 46.1/9.8 = 4.70 sec
</span><span> h = 1/2gt^2 =4.9*(4.70^2) = 108.241 m </span>
Answer:
The value of current through the rod becomes half
Explanation:
As per Ohm's law we know that the current through a resistor is given as
here we know that
here we know that the length of the cylinder is L and area is A so the value of current through the rod is given as
now we have change the length of the conductor to twice of initial value and rest all parameters will remain the same
so we will have
now from above two equations we have
so new current will become
The density of the metal sphere is 2 times the density of the liquid as proved.
<h3>Net upward force acting on the metal sphere</h3>
The net upward force acting on the sphere as it is dropped into the liquid is calculated as follows;
F = σVg - ρVg
ma = σVg - ρVg
where;
- ρ is density of the liquid
- σ is the density of the metal
- a is acceleration of the metal
σV(a) = σVg - ρVg
σ(a) = σg - ρg
σ(g/2) = σg - ρg
g(σ/2) = g(σ - ρ)
σ/2 = σ - ρ
σ/2 - σ = - ρ
-σ/2 = - ρ
σ = 2ρ
Thus, the density of the metal sphere is 2 times the density of the liquid as proved.
Learn more about density here: brainly.com/question/1354972
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