Answer:
A) 0.188
B) 53.1 ⁰
Explanation:
taking moment about 0
∑ Mo = Lo∝
mg 1/2 sin∅ = 1/3 m L^2∝
note ∝ = w∅
forces acting along t-direction ( ASSUMED t direction)
∑ Ft = Ma(t) = mr∝
mg sin ∅ - F = m* 1/2 * 3g/2l sin∅
therefore F = mg/4 sin∅
forces acting along n - direction ( ASSUMED n direction)
∑ Fn = ma(n) = mr()
= mg cos∅ - N = m*1/2*3g/1 ( 1 - cos∅ )
hence N = mg/2 ( 5cos∅ -3 )
A ) Angle given = 30⁰c find coefficient of static friction
∪ = F/N
= = 0.188
B) when there is no slip
N = O
= 5 cos ∅ -3 =0
therefore cos ∅ = 3/5 hence ∅ = 53.1⁰
It is important to note that the electromagnetic spectrum has a variety of wavelength and frequency of light in it. Some lights we can see, while others are not visual to our naked eye. It is actually very important to determine the kind of light as different lights have different wavelengths and frequencies. some lights are of very high frequency like the gamma rays, while others are of far lower frequency.
the answer is 40mph because 200 divided by 5 is 40
Answer:
Explanation:
<u>Speed</u>
The speed is calculated as the ratio of the distance d by the time t:
If we need to calculate the distance, the equation is solved for d:
d=v*t
The speed of light is
It takes t=9.221 seconds for light reflected from the moon Vega to reach planet Xartan.
We can calculate the average distance the light traveled:
Or, in scientific notation:
Correct option: B
The water is a precious resource as it is used everywhere. Once we use the water it becomes dirty or unusable and can only be recycled by snow melting or rainfall. Clean water can get used up and it can only be replenished by rain or snow melting. Hence, Penelope was correct when she said that water (clean) can be used up. If you use water for washing, cleaning and other industrial purposes, it becomes dirty and you cannot reuse it. Hence, you have to wait for rain to get clean water again. Hence, the clean water can be used up.