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1. ### Calculation on the energy

Total surface of 4 walls and roof = (144 + 135) m^2 = 279 m^2 Heat loss by conduction = (1/2) x 279 x (25 - 10...

2. ### toolbox

...2).(95/g)v^2 + 79.2 where v is the speed of the toolbox at the edge of the roof , and g is the acceleration due to gravity, taken to be 10 m/s^2 hence...

3. ### Physics---density and pressure

...the pressure to be reduced accordingly and hence avoiding damage to the roof . b) Weight of 850N is uniformly carried by the bottom...

4. ### High or low conductance??

... Ice-Cream container (polystyrene) An oven glove (nylon) Roof Insulation (polythene) Use high conductance materials for...

5. ### S1 Maths

... temperature = 285-355 = -70(degree) 2. A boy standing one the roof of his school building of height 34 meters threw a...

6. ### 家租住頂樓, 業主把天台租出電訊公司做發射站

...non-ionizing radiation, they could not penetrate the concrete slab on your roof . The phone signals that you receive when you stay at home is due...

7. ### Compare Hong Kong against US situation...(In English)

... this concept could be incorporated into the facades, roofs and shading devices of buildings. Two grid-...

8. ### projectile

...40)t + 13 = 0 t = 2.38 or 1.09 We take t = 2.38 for it to land on the roof . So horizontal displacement = 27 cos 40 x 2.38 = 49.2 m (2) Velocity...

9. ### Does wood have liquid state?

..., wood will still be found as a supporting material (notably in roof construction) or exterior decoration. Wood to be used for construction work...

10. ### kinematics (urgent)

...v =? v = [-10.213 + (-9.81) x 1] m/s = -20.023 m/s For the journey from the roof to ground, use equation: v^2 = u^2 + 2a.s with v = -20.023 m/s, u = 0 m...

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1. ### 相關詞

 roof island屋頂 棕櫚餐廳 roof安全帽 roof m cafe 嘉義roof roof屋頂 roof餐廳 roof 高雄 roof helmet