Answer:
The work done by the weightlifter, W = 700 J
The power of the weightlifter, P = 350 watts
Explanation:
A weightlifter lifts a set of weights a vertical distance, s = 2 m
The force exerted to lift the weight, F = 350 N
The work done by the body is defined as the product of the force applied by the body to the displacement it caused.
W = F x s
= 350 N x 2 m
= 700 J
The work done by the weightlifter, W = 700 J
The time taken by the weightlifter to lift the weight, t = 2 s
The power is defined as the rate of body to do work. It is given by the equation,
P = W / t
= 700 J / 2 s
= 350 watts
Hence, the power of the weightlifter, P = 350 watts
Answer:
Precipitation is the formation of a solid from a solution. It is necessary to centrifuge the precipitate to exert sufficient forces of gravity to bring the solid particles in the solution to come together and settle
Explanation:
When you centrifuge precipitate it enables the nucleation to form.
Centrifuging the precipitate helps in determining whether a certain element is present in a solution or not.
If you'r referring to some objects, it means that the mass of the object is less than the water so it floats. If the mass of an object is greater than the mass of the water, it will sink. Compare it to a balloon, helium makes it rise, while normal air makes it sink.
Answer:
10,035
Explanation:
Length of the beam is 3.2m
Mass of steel beam is 500kg
Weight of steel =mg
Ws=400×9.8=4900N
Also, man of mass =70kg
Weight of man(Wm)=70×9.8=686N
The weight of the man will act as the middle of the beam
Torque is given as Force ×distance
tnet=Wm×L + Ws×L/w
tnet=686×3.2+4900×1.6
tnet=10,035.2Nm
The net torque about where the beam is bolted is 10,035.2Nm
Check attachment for diagram
Answer:
I don't know
Explanation:
Please give me Brainliest answer
