Recent content by syllll_213

Hi, I wonder how C should be calculated. I tried finding the ratio of new intensity to the original intensity, which gives the exponential chunck, and I wonder if that is enough to show that doubling the shield thickness would not halve the dose? Is there a clearer and more numerical representation?

-40?

Hi, I came across this question and I wonder if my option is correct? I was thinking in Y and Z the current both divide (Kirchoff's Current Law) so they should be the same, while in X the current does not seem to divide and in Y I am struggling to visualise the division or current flow...

Hi, I just want to check if my working is correct cuz I seems to get the wrong answer in my first attempt by inserting 0.054mm as the heigh.... the height seems a bit small to me.

I attempted and keyed in the answer as 63 but I was graded wrong. What am I missing?

Hi, I am struggling to understand your response here. Should I focus on perpendicular lines or parallel? The link direct me to parallel line rules but I struggle to find any lines that have parallel relationship in the diagram.

NO? Because the friction is too little to contribute to the net force of the car, and so the net force will not be enough to push the truck? // May I clarify my understanding? So when the car starts its engine, it will exert force horizontal to the truck (3rd law discussed above) . Meanwhile...

Does it come from the car? Maybe the car's friction with the ground when the engine starts to move the car? Does that create an equal magnitude but opposite force on the truck as well which contributes to the net force of the car?

yes? I think I would have chosen C instead. That makes some more sense now , thank you so much!

I see. I was confused because I thought if there is an acceleration, then there should be a net force to the right. But I just realised (through your comment) that they are just asking about the impact of car on truck and truck on car in this care, therefore I should focus on the third law and...

Its exerting forces on the ground too?

Is it the third law? But I am unsure why the third law should be the main factor here?