i-beams are the choice for structural skyscrapers because of their high functionality.
the shape of i-beams makes them excellent for unidirectional bending parallel to the web.
the horizontal flanges resist the bending movement, while the web resists the shear stress.
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So it takes, 2.44 Joules of energy, to change 1 gram of ethanol by 1 degree Celsius.
Answer:
Torque is 93 Nm anticlockwise.
Explanation:
We have value of torque is cross product of position vector and force vector.
A force of 38 N, directed 30° above the x axis in the x-y plane.
Force, F = 38 cos 30 i + 38 sin 30 j = 32.91 i + 19 j
A particle is located on the x axis 4.9 m and we have to find torque about the origin on the particle.
Position vector, r = 4.9 i
Torque, T = r x F = 4.9 i x (32.91 i + 19 j) = 4.9 x 19 k = 93.1 k Nm
So Torque is 93 Nm anticlockwise.
Answer:
W = 2 eV
Explanation:
Given that,
The wavelength of a photon = 455 nm
The kinetic energy of a photon, K = 0.73 eV
We need to find the work function of the electron. It can be solved using Einstein's equation such that,
E is the energy of the photon
So,
So, the work function of the metal is 2 eV.
Answer:
This is simply my opinion, im putting it in the explanation
Explanation:
Karl Marx's idea that religion is the opium of the people can be looked at as how he sees religion as a sort of medicine for mankind. Though this is theoretically correct for a large percentage of the world, especially within those who practice religion, it should not be taken as the only viable way to look at things. I can say that humans in their nature are greedy, selfish, and in some cases evil, so it isn't hard to predict that not everyone will open their hearts to religion and accept what it stands for. Religion should not be looked at as the cure for all that is bad because it isn't up to faith, it's up to us. There is a difference between righting wrongs yourself and believing that god will get you through. He is right however in this idea, when it refers to the human race having a bit more heart or soul so that we can all better ourselves, but not necessarily through religion. If we were to all open ourselves up more and show our vulnerabilites, the world would progress. So, what I am trying to say is that I agree with the fact that we as people need to be kind and have soul and fight not to let ourselves succumb to immoral doings. I do not however believe that religion is the only way or the 'opium' of the people. It can be for individuals who decide but many people work in many ways. That is what I can say about Marx's idea.