Answer:
Their are 750 Centimeters in 7.5 meters if that what your asking (:
Explanation:
Conductivity,<span>the degree to which a specified material conducts electricity, calculated as the ratio of the current density in the material to the electric field that causes the flow of current. It is the reciprocal of the resistivity.</span>
Answer: 19.2°
Explanation:
Air has a refractive index of 1.00
Crown glass has a refractive index of about 1.52
Using Snell's law n₁sinθ₁ = nsinθ₂
1.00sin30.0 = 1.52sinθ₂
θ₂ = 19.2°
Answer:
3 N to the right
Explanation:
There are two forces acting on the car:
- A force of 10 N towards the right
- A force of 7 N towards the left
Therefore, the net force is given by the difference between the two, since they are in opposite directions:
![F=10 N-7 N=3 N](https://tex.z-dn.net/?f=F%3D10%20N-7%20N%3D3%20N)
And the direction is to the right, since the force to the right has greater magnitude than the force to the left.
Yes, the volume of the cylinder will remain constant. As the radius decreases, the height will increase to make sure that the volume is kept the same.
We have been given a value of dr/dt and are required to find dh/dt
Because the volume is constant, we can plug it into the formula for the volume of the cylinder and rearrange it to make h the subject:
128 = πr²h
h = 128/πr²
Now we differentiate both sides:
dh/dr = -256/πr³
Applying the chain rule:
dh/dt = dh/dr x dr/dt
dh/dt = (-256/πr³) x -0.05
dh/dt = 64/5πr³; substituting the value of r
dh/dt = 64/5π(1.5)³
dh/dt = 1.21 in/sec