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Why was the bone 30 times not 80 times ?
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i didnt have time so just said C im not sure :Soh thank god. I am so relieved now I know I scored 5 marks at least!! and what about that multiple chose question about the angle was it tan-1 b/a option D
malleable shows large platisic deformation under compressive stress not tensile stress (ductile) so it can be hammered into sheets but not draw into wires And explained some morethe question that says "lead is a malleable and the difference between malleable and ductile?" what is the answer?? can u help me guys
If he is accelerating, forces acting on him will be unbalanced, so how could normal contact and weight be equal?The Einsten question guys i said when he is stationary the normal contact is pushing him with a force equals to the weight since he is at equilbream when he is in space the normal contact causes him to accelerate with a rate of 9.81 so the normal contact is equal in magnitude to the force of weight therefore he wouldnt know the difference ( i explained more )
no while he is accelerating only normal contact is acting upon him but it has an equal magnitude of weight since mass is constant and weight causes an acceleration of 9.81 and the normal in space is causing an acceleration of 9.81 so they are equal in magnitude sincen normal contact on earth equals to weight and the normal contact on space has same magnitude as the weight on earth so he feels the same pushIf he is accelerating, forces acting on him will be unbalanced, so how could normal contact and weight be equal?
okey thank umalleable shows large platisic deformation under compressive stress not tensile stress (ductile) so it can be hammered into sheets but not draw into wires And explained some more
The bone has some of the other bone whch has a comparatively low Maximum Stress and so it's 30. :|No one answered me why is the bone breaks at 30 times not 80 times ?
oh good wrote it right pfft i lost 5 marks silly mistakes in the video explainantion i said we calculate the vertical height and then using the video camera we measure how many images were taken and divide them by 30 to get the time then we use equation of motion and i said v=u+at i was supposed to say s=ut+1/2at^2 so a mark in here and the property of steel i should have explaiend low density but i didnt and the quesiton above it i said air resistance act on the ball , the rubber question i calculated extension instead of finding force from the graph i i used f=kx forgot it doesnt obeys hooks law :S those are the mistake i shouldnt have done but i made someother mistake didnt know how to draw the vector diagram of the boat , the last circile i used c i think it was D eThe bone has some of the other bone whch has a comparatively low Maximum Stress and so it's 30. :|
oh good wrote it right pfft i lost 5 marks silly mistakes in the video explainantion i said we calculate the vertical height and then using the video camera we measure how many images were taken and divide them by 30 to get the time then we use equation of motion and i said v=u+at i was supposed to say s=ut+1/2at^2 so a mark in here and the property of steel i should have explaiend low density but i didnt and the quesiton above it i said air resistance act on the ball , the rubber question i calculated extension instead of finding force from the graph i i used f=kx forgot it doesnt obeys hooks law :S those are the mistake i shouldnt have done but i made someother mistake didnt know how to draw the vector diagram of the boat , the last circile i used c i think it was D e
hahaha center of mass what was defination i said the point where the weight acts upon the body im not sure about itI calculated the time to fall 30 m and then number of pictures/time
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