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Results tagged with homework-and-exercises
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user 31337
Applies to questions of primarily educational value - not only questions that arise from actual homework assignments, but any question where it is preferable to guide the asker to the answer rather than giving it away outright. Please READ THE GUIDANCE IN META before asking homework-like questions.
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Comparing unknown temperature scales [closed]
Source: Principles of Physics by Resnick, Halliday, Walker. $9^{th}$ edition. Chapter 18. Problem 6.
On a linear $X$ temperature scale, water freezes at $-125.0^0X$ and boils at $360.0^0X$. On a line …
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Error calculation in parallel resistances
This is the question:
There are two resistors with resistance values $R_1=100\pm3$ ohm and $R_2=200\pm4$ ohm. Find the equivalent resistance of parallel combination.
According to what I've learn …
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Minimum acceleration so that mass $m$ falls freely [closed]
A block of mass $m$ rests on a frictionless wedge of angle $\theta$ as in the figure. The wedge is given an acceleration $a$. What is the minimum value of $a$ so that the mass $m$ falls freely?
I h …
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Finding the value of velocity $u$ [closed]
A block of mass $m$ is pushed towards a moveable wedge of mass $\eta m$ and height $h$, with a velocity $u$. All surfaces are smooth. The minimum value of $u$ for which the block will reach the top of …
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Why does a difference in approach to projectile motion yields different results?
A body is projected vertically upwards from the surface of the earth with a velocity equal to half the escape velocity. If $R$ is the radius of the earth, then find the maximum height attained by the …
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1D Kinematics - Relative Motion involving non-inertial frames of reference
Let us assume we are standing inside the lift. For us, relative initial velocity $(u_{rel})$ is $0\:ms^{-1}$. The relative diplacement $s_{rel}$ is $5\:m$. The relative acceleration $a_{rel}$ is $10\: …
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