Answer:
The diameter of the piston of the players equals 55.136 cm.
Explanation:
from the principle of transmission of pressure in a hydraulic lift we have
Since the force in the question is the weight of the individuals thus upon putting the values in the above equation we get
Solving for we get
Answer:
If you threw a baseball at the speed of light, the ball would move 299,792,458 kilometers per second. Unlike light, a baseball has mass as it approaches the speed of light, its mass would increase towards infinity. As nothing can go faster than the speed of light, it is known as the speed limit of the universe.
Explanation:
They moved to different islands and adapted to the habitats of their islands
Answer:
Explanation:
ignoring air resistance, the kinetic energy at water impact will equal the potential energy converted
½mv² = mgh
v = √(2gh)
v = √(2(9.81)2.1) = 6.4188... m/s
after impact, an impulse will result in a change of momentum.
There is a downward impulse due to gravity equal to the weight of the stone and an upward average force due to water resistance and buoyancy force.
FΔt = mΔv
(F - mg)Δt = m(vf - vi)
(F - mg) = m(vf - vi)/Δt
F = m(vf - vi)/Δt + mg
F = m((vf - vi)/Δt + g)
F = 1.05(((½(-6.4188) - -6.4188)/ 1.83) + 9.81)
F = 12.14198...
F = 12.1 N
Answer:
T=12544 N*m
Explanation:
Given
L=4.0m
ms=500kg
mw=70kg
Torque is the force in a distance the relation is proportional so the torque of weight first is:
Ts = Fs*d
Ts = ms*g*L
Ts = 500kg*9.8m/s^2*2m
Ts = 9800 N*m
now torque of the worker
Tw = Fw*d
Tw = 70kg*9.8m/s^2*4m
Tw = 2744 N*m
Torque net is
Tnet = Tw+Ts
Tnet= 2744 + 9800 =12544 N*m