Answer:
I don't know why you are asking me?
Answer:
See explanation
Explanation:
Nuclear energy refers to energy trapped in the nucleus of atoms. Nuclear energy holds the greatest promise for large scale electricity generation. For instance, the amount of energy released by a given mass of uranium is 2.5 million times the energy released by combustion of an equal mass of carbon.One gram of uranium produces the same energy as 1 ton of coal, 17000 cubic feet of natural gas, 5000 pounds of wood and 149 gallons of oil.
Nuclear energy does not pollute the atmosphere as fossil fuels do. However, the challenges of effective control of the nuclear reactor and disposal of radioactive waste still remain a serious concern.
However, exploitation of nuclear energy as a source of electricity remain expensive and it is not quite easy to set up a nuclear power plant. Not many countries can afford to pay for the services of experts who operate nuclear energy plants talk more of providing the required equipment.
Answer:
Weight = 6.919 n
Buoyant force = 4.397 N
Apparent weight = 2.522 N
Explanation:
radius, r = 0.0199 m
density of platinum = 2.14 x 1064 kg/m^3
density of mercury = 1.36 x 1064 kg/m^3
Weight of sphere= volume of sphere x density of platinum x g
= 4/3 x 3.14 x (0.0199)^3 x 2.14 x 10^4 x 9.8 = 6.919 N
Buoyant force acting on sphere = Volume of sphere x density of mercury x g
= 4/3 x 3.14 x (0.0199)^3 x 1.36 x 10^4 x 9.8 = 4.397 N
Apparent weight = True weight - Buoyant force = 6.919 - 4.397 = 2.522 N
<span>Answer:
Fn is the force acting on the nut and d is the distance of the nut from the pivot.
F is the applied force at one end and D is the distance of the end from the pivot.
F.D = Fn*d</span>
Answer:
268.2 m/s (1dp)
Explanation:
600 miles = 965,606m (1mile = 1609.34m)
965606/60 = 16,0943.43 ..... (metres traveled every minute)
16,0943.43/60 = 268.2238 .....