Answer:
Walking
1914000 J
Explanation:
P = Power
Time is given by
![t=\dfrac{Distance}{Speed}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7BDistance%7D%7BSpeed%7D)
Energy is given by
Running
![E=Pt\\\Rightarrow E=700\times \dfrac{5.5}{10}\times 3600\\\Rightarrow E=1386000\ J](https://tex.z-dn.net/?f=E%3DPt%5C%5C%5CRightarrow%20E%3D700%5Ctimes%20%5Cdfrac%7B5.5%7D%7B10%7D%5Ctimes%203600%5C%5C%5CRightarrow%20E%3D1386000%5C%20J)
Walking
![E=Pt\\\Rightarrow E=290\times \dfrac{5.5}{3}\times 3600\\\Rightarrow E=1914000\ J](https://tex.z-dn.net/?f=E%3DPt%5C%5C%5CRightarrow%20E%3D290%5Ctimes%20%5Cdfrac%7B5.5%7D%7B3%7D%5Ctimes%203600%5C%5C%5CRightarrow%20E%3D1914000%5C%20J)
It can be seen that the energy walking requires more energy
Because the time taken cycling is less the energy is less.
When you hit a ball it collides with the bat. When you catch a ball it collides with your hand.
Answer:
High winds, hail, excessive precipitation, and wildfires are forms and effects of severe weather, as are thunderstorms, downbursts, tornadoes, waterspouts, tropical cyclones, and extratropical cyclones. Regional and seasonal severe weather phenomena include blizzards (snowstorms), ice storms, and duststorms.
Explanation:High winds- wind speeds as low as 23 knots (43 km/h) may lead to power outages when tree branches fall and disrupt power lines. Once wind exceed 135 knots (250 km/h) within strong tropical cyclones and tornadoes, homes completely collapse, and significant damage is done to larger buildings. Total disruption occurs once wind exceeds 175 knots (324 km/h)
Tornado- Typically look like a narrow funnel reaching from the clouds to the ground. Their wind speed goes from 65 to 250 miles per hour.
"An extreme weather condition in which we face the high speed wind in combination with heavy snow."
As for any blizzard has the normal wind speed of about 40 mph, and the visibility range reduces to less then 500 ft.
Answer:
25.06s
Explanation:
Remaining part of the question.
(A large stone sphere has a mass of 8200 kg and a radius of 90 cm and floats with nearly zero friction on a thin layer of pressurized water.)
Solution:
F = 60N
r = 90cm = 0.9m
M = 8200kg
Moment of inertia for a sphere (I) = ⅖mr²
I = ⅖ * m * r²
I = ⅖ * 8200 * (0.9)²
I = 0.4 * 8200 * 0.81
I = 2656.8 kgm²
Torque (T) = Iα
but T = Fr
Equating both equations,
Iα = Fr
α = Fr / I
α = (60 * 0.9) / 2656.8
α = 0.020rad/s²
The time it will take her to rotate the sphere,
Θ = w₀t + ½αt²
Angular displacement for one revolution is 2Π rads..
θ = 2π rads
2π = 0 + ½ * 0.02 * t²
(w₀ is equal to zero since sphere is at rest)
2π = ½ * 0.02 * t²
6.284 = 0.01 t²
t² =6.284 / 0.01
t² = 628.4
t = √(628.4)
t = 25.06s
The answer is 167 pounds.