Answer: P = 120 kg·9.81 m/s² · 2 m / 30 s = 78 W
Explanation: power P = Work done / time
Work is lifting work = mgh in which g = 9.81 m/s²
Time 30 s
Answer:
3WGGRGWERGRG
Explanation:
GERAGAETGAERR GHERUERHGRRGF;SBDF;JKSRDMFNSDFLDGGD;GDVF
The ozone layer absorbs most of the incoming ultraviolet rays radiation
from the sun. The ozone layer is found at the second layer of the atmosphere, stratosphere.
Answer:
5.709 m/s
Explanation:
Assuming compression of spring as 0.6m and spring constant of 602 N/m
The initial energy stored in the spring will be given by
By substitution, the initial energy is \
Kinetic energy of the 6 Kg block is given by subtracting energy lost due to friction from the initial stored energy hence
where m is mass, v is speed, g is acceleration due to gravity, x is the spring compression and is the coefficient of friction
Making v the subject then