<h3>Answer:</h3><h3>T
wo possible smallest and largest angles are 11.78° and 78.22°.</h3>
Step-by-step explanation:
Minigolf ball will follow a trajectory to get into the hole.
Since range of a trajectory is calculated by the formula,
![R=\frac{u^{2}sin2\theta}{g}](https://tex.z-dn.net/?f=R%3D%5Cfrac%7Bu%5E%7B2%7Dsin2%5Ctheta%7D%7Bg%7D)
Where u = initial speed of the ball
θ = angle between the hole and direction in which the ball has been projected
g = gravitational pull
Now we plug in the values in the formula,
![2=\frac{7^{2}sin(2\theta)}{9.8}](https://tex.z-dn.net/?f=2%3D%5Cfrac%7B7%5E%7B2%7Dsin%282%5Ctheta%29%7D%7B9.8%7D)
sin2θ = ![\frac{2\times 9.8}{49}](https://tex.z-dn.net/?f=%5Cfrac%7B2%5Ctimes%209.8%7D%7B49%7D)
2θ = ![sin^{-1}(0.4)](https://tex.z-dn.net/?f=sin%5E%7B-1%7D%280.4%29)
2θ = 23.57° or 156.43°
θ = 11.78° or 78.22°
Hence two possible smallest and largest angles are 11.78° and 78.22°.
Answer:
(-3)^13
Step-by-step explanation:
(-3) is a constant value so there is no change
You must add 4 and 9 together to create one exponent of 13
The answer to your question is D.
Answer:
34 classes
Step-by-step explanation:
First, subract 180 from 1200. You should get 1020. then do 1020/30. So 34 classes can watch the performance of 180 students.
Current density of solution a/m2 is given below
Step-by-step explanation:
Current density is the measure of current generated per unit surface area of electrode.
Eg: In microbial fuel cell/fuel cells, if you are using electrode with size of 5cm x 2cm and current produced is 200mA, then current density will be,
CD= Current/(projected area of electrode)
area of rectangle= LxB= 5cm x 2cm =10cm2
CD= 200mA/10cm2
CD= 20mA/cm2
Your Current will be 200mA.
Current density will be 20mA/cm2.