Recent questions tagged gatees-2025

An incandescent light bulb operated for two hours per day uses $12.2 \: \text{kWh}$ of energy per month. Burning of one kg of coal generates $2 \: \text{kWh}$ of electric...

A street sweeping machine starts from point $P$ and ends at $S$, as shown in the network of streets below. It sweeps all the streets at least once.Length of the streets, ...

A solid waste of composition $\mathrm{C}_{60} \mathrm{H}_{135} \mathrm{O}_{50} \mathrm{~N}_{5}$ is to be composted aerobically in a closed vessel mechanical composting fa...

An industry releases three greenhouse gases $\mathrm{(GHGs)}$, $\mathrm{CO}_{2}(5 \mathrm{~kg} /$ day $), \mathrm{CH}_{4}(0.5$ $\mathrm{kg} /$ day $)$, and $\mathrm{N}_{2...

Water from a hand pump located near a landfill has $1 \mathrm{mg} / \mathrm{L}$ arsenic (oral carcinogenic potency factor $=1.75(\mathrm{~kg-day}) / \mathrm{mg})$. A pers...