<span>During
an investigation, a student determines that a copper sample has a
density of 8.10 g/ml. What is the students percent error of the accepted
density for copper is 8.96 g/ml
</span>
Answer:
646,800
Explanation:
If you multiply the 7,700N and the 444kg your answer would be 646,800.
Answer:
magnetic force acts between moving charged particles
Explanation:
bc i looked it up
To solve this problem it is necessary to apply the second derivative of the function to find the maximum time reference and thus calculate the maximum voltage.
With the maximum voltage by Ohm's Law it is possible to find the maximum current.
Ohm's law defines that
E = I*R
Where,
I = Current
R= Resistance
On the other hand by faraday studies and the potential can be expressed at the rate of change of the electric flow, that is

Replacing with our values we have that


The second derivative is

When E' = 0 we have a Maximum, then
0 = -36t+36
t = 1
Therefore when the time is 1s E has a Maximum, replacing at the function



Then the maximum current will be given by



Therefore the maximum current induced in the ring is 6.42A
Explanation:
It is given that,
When the front wheels are over the scale, the weight recorded by the scale is 5800 N, F₁ = 5800 N
When the rear wheels are over the scale, the scale reads 6500 N, F₂ = 6500
The distance between the front and rear wheels is measured to be 3.20 m, x₂ = 3.2 m
We need to find the location of center of mass behind the front wheels. Let the center of is located at a distance of x₁. Thus balancing the torques we get :

On solving the above equation we get, x₂ = 1.69 m
So, the center of mass is located at a distance of 1.69 meters behind the front wheels.