A63.2-kg climber finds herself dangling over the edge of a cliff. fortunately, she’s connected by a rope of negligible mass to a 1220-kg rock located 48.6 m from the edge of the cliff. unfortunately, the ice is frictionless, so the climber accelerates downward. what’s her acceleration, and how much time does she have before the rock goes over the edge?

Explanation:

Given

mass of climber

Distance between rock and cliff=48.6 m

mass of rock

let T be the tension in the rope

Thus ------1

where a is the acceleration of system

Also for Rock

------2

From 1 & 2 we can say that

g+a=19.303 a

g=18.303 a

Thus climber is decelerating with

time to cover 48.6 m

t=13.47 s

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.