We first determine the vertex by using the formula,<span>-b/2a = vertex, in order to get the values for the t-coordinate. That is why we got
</span>
v_y=26.5 sin(53)=21.163v_x=26.5 cos(53)=15.948
then
let x=0since you are going to land on a 3m tally=-.5(9.8)t^2+ 21.163*t
y=0=-4.9t+21.163t=4.31
vx*4.31= total distance travelled=68.88m
Then for the first wheel, you have 15.948m=vxdetermine the time when he reaches 23 meters, that is
23/15.948=1.44218 sec
substitute t with1.44218 sec, then determine the height.
h(1.44218)=20.329
determine vertex by using a graphing calculatort=2.1594s h=22.85m
using the time value of the vertex, determine horizontal distance travelled
34.438m away from cannon
Answer:
The method to determine whether a string contains a value that can be converted to a specific data type before it is converted to that data type
Explanation:
The Java string includes () method to check whether a particular sequence of character is the part of given sub string or not.
One string contain another string in Java or not.
The indexof() to check the string and substring in java
Hence java string include () method to check whether a string contains a value that can be converted to a specific data type before it is converted to that data type
Answer:
2.2 meters
Explanation:
Potential energy, PE created by a charge, q at a radius r from the charge source, Q, is expressed as:
![KE=\frac{kQq}{r}\ \ \ \ \ \ \ ...i](https://tex.z-dn.net/?f=KE%3D%5Cfrac%7BkQq%7D%7Br%7D%5C%20%20%20%20%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20...i)
is Coulomb's constant.
#The electric field,
at radius r is expressed as:
![E=\frac{kQ}{r^2}\ \ \ \ \ \ \ \ \ \ ...ii](https://tex.z-dn.net/?f=E%3D%5Cfrac%7BkQ%7D%7Br%5E2%7D%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20...ii)
From i and ii, we have:
![KE=Eqr](https://tex.z-dn.net/?f=KE%3DEqr)
![r=(KE)/Eq](https://tex.z-dn.net/?f=r%3D%28KE%29%2FEq)
#Substitute actual values in our equation:
![r=\frac{75J}{(7.2\times 10^{-5}C)(4.8\times 10^5 V/m)}\\\\=2.1701\approx2.2\ m](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B75J%7D%7B%287.2%5Ctimes%2010%5E%7B-5%7DC%29%284.8%5Ctimes%2010%5E5%20V%2Fm%29%7D%5C%5C%5C%5C%3D2.1701%5Capprox2.2%5C%20m)
Hence, the distance between the charge and the source of the electric field is 2.2 meters
There won't be another period where many brilliant discoveries are made in such a span of time because of the high degree of advancement already.
<h3>What is Technology?</h3>
Tgis is defined as the application of scientific knowledge for practical purposes.
We have advanced technological advancement which is why there won't be many discoveries in such time span.
Read more about Technology hee brainly.com/question/7788080
Answer:![3.6\ kW](https://tex.z-dn.net/?f=3.6%5C%20kW)
Explanation:
Given
Power Supplied
[/tex]
Efficiency of the motor ![\neta =90\%](https://tex.z-dn.net/?f=%5Cneta%20%3D90%5C%25)
and ![\neta =\dfrac{\text{Power output}}{\text{Power input}}](https://tex.z-dn.net/?f=%5Cneta%20%3D%5Cdfrac%7B%5Ctext%7BPower%20output%7D%7D%7B%5Ctext%7BPower%20input%7D%7D)
![\Rightarrow 0.9=\dfrac{P_{out}}{4}](https://tex.z-dn.net/?f=%5CRightarrow%200.9%3D%5Cdfrac%7BP_%7Bout%7D%7D%7B4%7D)
![\Rightarrow P=0.9\times 4](https://tex.z-dn.net/?f=%5CRightarrow%20P%3D0.9%5Ctimes%204)
![\Rightarrow P=3.6\ kW](https://tex.z-dn.net/?f=%5CRightarrow%20P%3D3.6%5C%20kW)
So, vacuum cleaner delivers a power of ![3.6\ kW](https://tex.z-dn.net/?f=3.6%5C%20kW)