Answer:
202.8m
Explanation:
Given that A pirate fires his cannon parallel to the water but 3.5 m above the water. The cannonball leaves the cannon with a velocity of 120 m/s. He misses his target and the cannonball splashes into the briny deep.
First calculate the total time travelled by using the second equation of motion
h = Ut + 1/2gt^2
Let assume that u = 0
And h = 3.5
Substitute all the parameters into the formula
3.5 = 1/2 × 9.8 × t^2
3.5 = 4.9t^2
t^2 = 3.5/4.9
t^2 = 0.7
t = 0.845s
To know how far the cannonball travel, let's use the equation
S = UT + 1/2at^2
But acceleration a = 0
T = 2t
T = 1.69s
S = 120 × 1.69
S = 202.834 m
Therefore, the distance travelled by the cannon ball is approximately 202.8m.
Answer:
A treadmill get it? but its Ff * d cos theta
Explanation:
Answer:
![\frac{F}{W} = 9.37 \times 10^{-4}](https://tex.z-dn.net/?f=%5Cfrac%7BF%7D%7BW%7D%20%3D%209.37%20%5Ctimes%2010%5E%7B-4%7D)
Explanation:
Radius of the pollen is given as
![r = 12.0 \mu m](https://tex.z-dn.net/?f=r%20%3D%2012.0%20%5Cmu%20m)
Volume of the pollen is given as
![V = \frac{4}{3}\pi r^3](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B4%7D%7B3%7D%5Cpi%20r%5E3)
![V = \frac{4}{3}\pi (12\mu m)^3](https://tex.z-dn.net/?f=V%20%3D%20%5Cfrac%7B4%7D%7B3%7D%5Cpi%20%2812%5Cmu%20m%29%5E3)
![V = 7.24 \times 10^{-15} m^3](https://tex.z-dn.net/?f=V%20%3D%207.24%20%5Ctimes%2010%5E%7B-15%7D%20m%5E3)
mass of the pollen is given as
![m = \rho V](https://tex.z-dn.net/?f=m%20%3D%20%5Crho%20V)
![m = 7.24 \times 10^{-12}](https://tex.z-dn.net/?f=m%20%3D%207.24%20%5Ctimes%2010%5E%7B-12%7D)
so weight of the pollen is given as
![W = mg](https://tex.z-dn.net/?f=W%20%3D%20mg)
![W = (7.24 \times 10^{-12})(9.81)](https://tex.z-dn.net/?f=W%20%3D%20%287.24%20%5Ctimes%2010%5E%7B-12%7D%29%289.81%29)
![W = 7.1 \times 10^{-11}](https://tex.z-dn.net/?f=W%20%3D%207.1%20%5Ctimes%2010%5E%7B-11%7D)
Now electric force on the pollen is given
![F = qE](https://tex.z-dn.net/?f=F%20%3D%20qE)
![F = (-0.700\times 10^{-15})(95)](https://tex.z-dn.net/?f=F%20%3D%20%28-0.700%5Ctimes%2010%5E%7B-15%7D%29%2895%29)
![F = 6.65 \times 10^{-14} N](https://tex.z-dn.net/?f=F%20%3D%206.65%20%5Ctimes%2010%5E%7B-14%7D%20N)
now ratio of electric force and weight is given as
![\frac{F}{W} = \frac{6.65 \times 10^{-14}}{7.1 \times 10^{-11}}](https://tex.z-dn.net/?f=%5Cfrac%7BF%7D%7BW%7D%20%3D%20%5Cfrac%7B6.65%20%5Ctimes%2010%5E%7B-14%7D%7D%7B7.1%20%5Ctimes%2010%5E%7B-11%7D%7D)
![\frac{F}{W} = 9.37 \times 10^{-4}](https://tex.z-dn.net/?f=%5Cfrac%7BF%7D%7BW%7D%20%3D%209.37%20%5Ctimes%2010%5E%7B-4%7D)
Answer:
<u>Facts about 258</u>
<u>Sig Figs</u>
3
<u>258</u>
<u>Decimals</u>
0
<u>Scientific Notation</u>
2.58 × 102
<u>E-Notation</u>
2.58e+2
<u>Words</u>
two hundred fifty-eight
Explanation:
258 Rounded to Fewer Sig Figs
2 260 2.6 × 102
1 300 3 × 102
Answer:
Which sentence from the passage shows that the function of the river depicted here has carried through to modern times?
Explanation:
Which sentence from the passage shows that the function of the river depicted here has carried through to modern times?