Answer:
787528.7 J
Explanation:
Work done: This can be defined as the product of force and distance along the direction of force. The S.I unit of work is Joules (J).
From the question,
W = Tcos∅(d)............. Equation 1
Where W = work done, T = tension in the rope, ∅ = the angle of the rope to the horizontal, d = distance.
But,
d = v(t)..................... equation 2
Where v = velocity, t = time
Substitute equation 2 into equation 1
W = Tcos∅(vt)............. Equation 3
Given: T = 210 N, ∅ = 23°, v = 7 km/h = 1.94 m/s, t = 35 min = 2100 s
Substitute into equation 3
W = 210(cos23°)(1.94×2100)
W = 787528.7 J
Answer:
The capacitance is 1.75 nF
Explanation:
From the question we are given that
The inner radius is
The outer radius is 000.1
Length of the capacitor is L = 1m
The dielectric constant is Di = 2
The dielectric constant is Di2 = 4
Generally the capacitance of a capacitor can be mathematically represented as
1.75nF
Answer:
(a) ![\alpha =-1.43rev/sec^2](https://tex.z-dn.net/?f=%5Calpha%20%3D-1.43rev%2Fsec%5E2)
(b) 4.17 rev
(c) 6.40 sec
Explanation:
We have given the angular velocity of fan decreases from 550 rev/min to 180 rev/min
So initial angular speed ![\omega _0=550rev/min=\frac{550}{60}=9.166rev/sec](https://tex.z-dn.net/?f=%5Comega%20_0%3D550rev%2Fmin%3D%5Cfrac%7B550%7D%7B60%7D%3D9.166rev%2Fsec)
Final angular speed ![\omega =180rev/min=\frac{180}{60}=3rev/sec](https://tex.z-dn.net/?f=%5Comega%20%3D180rev%2Fmin%3D%5Cfrac%7B180%7D%7B60%7D%3D3rev%2Fsec)
Time is given as t = 4.3 sec
(a) We know that angular acceleration is given by ![\alpha =\frac{\omega -\omega _0}{t}=\frac{3-9.166}{4.3}=-1.43rev/sec^2](https://tex.z-dn.net/?f=%5Calpha%20%3D%5Cfrac%7B%5Comega%20-%5Comega%20_0%7D%7Bt%7D%3D%5Cfrac%7B3-9.166%7D%7B4.3%7D%3D-1.43rev%2Fsec%5E2)
(b) We know the relation \Theta =\omega _0t+\frac{1}{2}\alpha t^2=9.166\times 4.3-\frac{1}{2}\times 1.43\times 4.3^2=26.1935rad=\frac{26.1935}{2\pi }=4.17rev
(c) Now final angular velocity ![\omega =0rev/sec](https://tex.z-dn.net/?f=%5Comega%20%3D0rev%2Fsec)
So time ![t=\frac{0-9.166}{-1.43}=6.40sec](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B0-9.166%7D%7B-1.43%7D%3D6.40sec)
Answer:
The ability of our bodies to adapt to different levels of gravity. You would become weaker and your heart is use to zero gravity. Boredom because there isn't much to in space. When intelligent people get bored, it's not pretty all the time...
Answer:
Hey mate....
Explanation:
This is ur answer.....
Dancing is a great cardio workout. Like any good, low-impact cardio workout, dancing can improve cardiovascular health, increase stamina, strengthen bones and muscles and stave off illnesses....
SO IT'S YES!
Hope it helps you,
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