There is strong evidence indicating that 3.8 billion years ago there was a higher impact rate. This deduction starts from comparing the number of craters in the lunar highlands with those of the Mary. If this comparison is made, it will be observed that there are 10 times more craters in the highlands than in a similar area of Mary. It should be borne in mind that through radioactive dating processes the samples indicate that there is a slightly greater antiquity in the highlands than those of Maria. This allows us to deduce that if the impact rates had been constant, the highlands would have been 10 times older. They would have to be formed 38 billion years ago, long before the universe itself began.
Therefore one of the most obvious reasons is there are ten times more craters on the older highlands than the Younger Maria.
Answer:
The angular acceleration of the blades is .
Explanation:
Given that,
Initial angular velocity of the blade of fan,
Final angular velocity of the blade of a fan,
Time, t = 5.95 s
The angular acceleration of the blades is equal to the rate of change of its angular velocity. It is given by :
So, the magnitude of the angular acceleration of the blades is .
I believe the answer would be 446.9 J.
Answer:
0 MN/C, 2.697 MV
4.1953 MN/C, 1.2586 MV
19.2642857143 MN/C, 2.697 MV
Explanation:
k = Coulomb constant =
Electric field at r = 8 cm
E = 0 (inside)
Electric potential is given by
Electric potential is 2.697 MV
r = 30 cm
Electric field is 4.1953 MN/C
Electric potential is 1.2586 MV
r = R = 14 cm
The electric field is 19.2642857143 MN/C
The potential is 2.697 MV
A material is said to be ductile if it can be stretched thin when tensile stress is administered. Such a material can be stretched into a wire.
This is different from malleability which describes a material that can bend or alter shape using compressive force e.g. hammering , rather than tensile stress.
Tensile stress is a type of force or stress that alters the length of a material in the same direction as the force being applied.
The opposite of ductile is brittle. Brittle materials can break when subjected too much tensile stress.