Answer:
P=F/A where F is the weight of the water and A is the area on which it is resting. The weight of the water is mg. The mass of the water is dv where d is the density and v is the volume. Finally, the volume of the water in a vessel is equal to the area of the base of the vessel times the height of the vessel. (v=Ah)
Plugging everything in we get:
P = dAhg/A
So
P=dhg
So we have shown that liquid pressure is directly proportional to height of liquid in a vessel.
Chemical energy because it transfer to the pencil
Answer:
The laptop battery is capable of supplying 253980 J.
Explanation:
Given;
voltage of the battery, V = 11.4 V
power consumed by the laptop, P = 8.3 W
duration of the battery before depletion, t = 8.5 hours
Determine the amount of energy supplied by the laptop battery within 8.5 hours.
Energy, E = Power x time
Energy, E = 8.3 W x 8.5 h = 70.55 Wh
Energy, E in joules = 70.55 wh x 3600 s/h = 253980 J
Therefore, the amount of energy supplied by the laptop battery within 8.5 hours is 253980 J.
Answer:
Explanation:
We shall represent all the forces in vector form .
Force of 95 pounds
F₁ = 95cos100 i + 95sin100j
= -16.5 i +93.55 j
force of 75 pounds
F₂ = 75cos200 + 75sin200j
= -70.47 i - 25.65 j
force of 146 pounds
F₃ = 146cos300 i + 146sin300j
= 73i -126.44 j
Resultant force
R = F₁+ F₂ + F₃
= -16.5 i +93.55 j -70.47 i - 25.65 j +73i -126.44 j
= -13.97 i - 58.54 j
Magnitude of R = √ ( 13.97² + 58.54² )
= 60.18
If Ф be angle of resultant with axis
tanФ = - 58.54 / -13.97
Ф = 76.57 + 180 = 256.57 , because both x and y components are negative. So the resultant will be in third quadrant.
