Answer: force = mass x accelegation
Explanation: 15x3 = 45 N
Answer:
sound Requires a medium in order to travel.
The force required is
(15 kg) x (the acceleration, in m/s²) newtons.
Answer: 7 km
Explanation: 12 minutes is 1/5 of an hour. 35/5=7
Heat absorbed by the solar collector = Area*Irradiance = 5.3*995 = 5273.5 W
Heat Q in joules absorbed in t hours = Heat used to heat water. That is,
5273.5*t = mCΔT; where mass = volume*density = 1*1000 = 1000 kg
Therefore;
5273.5t = 1000*4186*(65-20) = 188370000
t = 188370000/5273.5 = 35720.11 seconds = 35720.11/(60*60) hours ≈ 9.92 hours.
It will take approximately 9.92 hours.
