Answer:
What Electricity questions?
Explanation:
Answer:
As 28m/s = 28m/s
Explanation:
r = the radius of the curve
m = the mass of the car
μ = the coefficient of kinetic friction
N = normal reaction
When rounding the curve, the centripetal acceleration is
![a = \frac{v^{2}}{r}](https://tex.z-dn.net/?f=a%20%3D%20%5Cfrac%7Bv%5E%7B2%7D%7D%7Br%7D)
therefore
![\mu mg = m \frac{v^{2}}{r} \\\\ \mu = \frac{v^{2}}{rg}](https://tex.z-dn.net/?f=%5Cmu%20mg%20%3D%20m%20%5Cfrac%7Bv%5E%7B2%7D%7D%7Br%7D%20%5C%5C%5C%5C%20%5Cmu%20%3D%20%20%5Cfrac%7Bv%5E%7B2%7D%7D%7Brg%7D)
![v = \sqrt{\mu rg}](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B%5Cmu%20rg%7D)
![\mu = \sqrt{0.8 \times 100\times9.8} \\\\= 28m/s](https://tex.z-dn.net/?f=%5Cmu%20%3D%20%5Csqrt%7B0.8%20%5Ctimes%20100%5Ctimes9.8%7D%20%5C%5C%5C%5C%3D%2028m%2Fs)
As 28m/s = 28m/s
Answer:
perimeter of the bottom of the tank is 450 cm
Explanation:
If you want to get area you need the Length, width,and height.
Answer:
1: a measuring instruments the students should use for time is a stopwatch
2: a measuring instruments the students should use for distance is a measuring tape
Explanation:
pls mark brainliest
A displacement is a vector quantity that takes into account the shortest distance from the starting point to the endpoint.
The given above gave a time interval in minutes which needs to be converted to seconds. Given that each minute is 60 seconds, 5 minutes equal 300 seconds. To determine the distance, multiply time with speed. The product is 225 m.
Thus, the displacement is 225 m.