Answer: Scientist don't know where energy comes from and how it was created but God created energy.
Explanation:
Total energy before the toss:
Total energy at the roof:
Energy must be conserved so :
If v₁ is the initial velocity and v₂ is the final velocity, which is zero at the roof:
Answer:
(A) 14.7 N
(B) 0.15 m
(C) the speed will become 24.8 m/s while wavelength becomes 0.21 m
Explanation:
frequency (f) = 120 Hz
mass (m) = 1.5 kg
linear mass density (μ) = 0.0480 kg/m
acceleration due to gravity (g) = 9.8 m/s^{2}
(A) tension on the rope (T) = mg = 1.5 x 9.8 = 14.7 N
speed =
speed =
speed = 17.5 m/s
(B) wavelength = velocity / frequency
wavelength = 17.5 / 120 = 0.15 m
(C) when the mass are increased to 3.00 kg
tension now becomes = mg = 3 x 9.8 = 29.4 N
therefore speed = = = 24.8 m/s
wavelength now becomes = velocity / frequency = 24.8 / 120 = 0.21 m
hence the speed will become 24.8 m/s while wavelength becomes 0.21 m
Ig its Air and noise pollution
Answer:
Explanation:
Water potential is defined as potential energy of water per unit volume with respect to potential energy of pure water. When some salt is dissolved in water , its potential energy becomes negative . Pressure on water increases its potential . Physical phenomena like osmotic pressure, surface tension etc influences the water potential.
Direction of flow of water is guided by water potential. Water always flows from higher water potential to lower water potential. In the given problem water will flow fro solution having water potential of -3.25 bars to that having water potential of - 6.25 bars.