Answer: t = 10s
Explanation:
Assuming there's no air resistance,
Initial velocity (u) = 0 m/s
Acceleration by gravity (a) = 9.81 m/s^2
Displacement (s) = 500m
Time taken (t) = ?
Now,
Use formula,
s = u×t + (1/2)×a×t^2
s = 0×t + (1/2)×9.81×t^2
500 = 4.905×t^2
t = 10s
Answer:
i don't think it will work
Explanation:
because in order to lose weight, you have to do more than one stretch because weight loss takes multiple steps and not just one exercise, it would also involve you to eat healthy and to increase the pace, your friend could go running, do yoga, eat healthier, drink more water, and do more than just a core workout and etcetera.
Answer: a) 24.2 rad/s² b) 6.95 rad/s
Explanation:
So the cylinder's moment of inertia is , where M is the mass of the cylinder and R is its radius.
The problem you have here is that the axle is modifying it, so we use the parallel axis theorem:
Therefore
where D is the distance from the center of mass to the axis which is a radius R
Next the Momentum with respect to the center of mass of the cylinder is
because there are no other forces rather than the cylinder's weight, now kg*m^2
a ) replace and find
b) we start by assuming that the energy is conserved because the cylinder is rolling without sliding:
so the potential energy is given by
now you have that the same amount is going to be equal to the kinetic rotational energy of the cylinder so
The potential barrier in the depletion region is due to ions.
<u>Explanation:</u>
A pn junction diode forms a depletion region or layer when the charge carriers of the respective sides gets away from their diffusion region. For example, say the p-sides in diode has holes as charge carriers and n-sides in diode has electrons as charge carriers.
So when current passes via the diode, at one point, the charge carriers will be drifted away from the diffusion region and their corresponding ionized minority carriers will be forming a layer. This layer will be resisting the flow of current and is termed as depletion region.
So the potential barrier is the potential difference required to diffuse these ionized electrons from one side to another. Thus, the potential barrier at the depletion regions is due to ions.
Answer:
Work done = 2218.97 kJ
Explanation:
Work = Force x Displacement.
Force = Weight of water.
Weight of water = Mass of water x Acceleration due to gravity.
Mass of water = Volume of water x Density of water.
Volume of water = Base area of swimming pool x Depth of water.
Base area of swimming pool
Depth of water = 1.5 m
Volume of water
Mass of water = 75.40 x 1000 = 75400 kg
Weight of water = 75400 x 9.81 = 739656 N
Work done = 739656 x 3 = 2218.97 kJ