# Yahoo Web Search

1. ### Temperature changes from [25∘C] up to [125∘C] a tungsten wire filament [15 cm ] long with a diameter of [1.7 mm ] will be used.?

(A) By J = σE, where J is the current density at a given location in a resistive material, E is the electric field at that location, and σ (sigma) is a material-dependent parameter called the conductivity.  =>E = J/σ =>E...

1 Answers · Science & Mathematics · 05/07/2020

2. ### Water rises in a glass capillary tube to a height of 17 cm . What is the diameter of the capillary tube?

By the formula you provide, r = 2T / hpg = 2*0.07199kg/s² / (0.17m * 1000kg/m³ * 9.8m/s²) r = 8.6e-5 m so the diameter d = 2r = 1.7e-4 m = 0.17 mm Hope this helps!

1 Answers · Science & Mathematics · 22/11/2019

3. ### Help me pls?? Provide me an answer with solution/formula. Thanks!!!?

... water has a density of 1 gm/ cm ^3, so our column needs to be 15000/49 cm tall 15000/49 => 306 cm => 3.06 meters So a depth of about 10...

1 Answers · Science & Mathematics · 23/12/2019

4. ### Physics question?

...new load has to be added closer to the left string. When they have the same tension, that...500g*g*15cm g cancels I get x = 6.25 cm = 62.5 mm from the center If you find this helpful, please select...

1 Answers · Science & Mathematics · 13/08/2020

5. ### pls help asap?

...6.0m * 90K = 0.00918 m = 9.18 mm 3) using α = 24e-6, 0.0066 m... * 135º L = 2.03 cm Whoever made your...answer key did a bad conversion from cm to m. No doubt the answer they want here...

1 Answers · Science & Mathematics · 14/09/2020

6. ### Simple volume questions?

...they cancel out, it's much more likely to recognize unit mistakes versus ... should realize that 200 m of 1.4 mm diameter wire can't possibly be this much... have 3.08 * 10^-4 m^3.  8.8 g/ cm ^3 = 8800 kg/m^3 = 2.71 kg   For...

3 Answers · Science & Mathematics · 21/05/2020

7. ### Physics help!!?

...ignore relativistic effects Both answers should be rounded to two digits. If you find this helpful, please select Favorite...

1 Answers · Science & Mathematics · 08/02/2020

8. ### Volume flow rate through tube from beaker?

The pressure difference between the ends of the tube is produced by the 40cm height of water: ΔP = ρgΔh = 1000*9.8*0.40 Poiseuille’s formula for flow rate Q = πR⁴ΔP/(8ηL). Q = π(0.0035/2)⁴ * 1000...

1 Answers · Science & Mathematics · 30/08/2020

9. ### If a single gold atom has a diameter of 2.9×10^−8 cm , how many atoms thick was Rutherford's foil?

Considering atoms lined up side to side number of atoms in the thickness = (4 x 10⁻³ mm )/(2.9 x 10⁻⁷ mm ) = 13793 atoms

1 Answers · Science & Mathematics · 14/09/2020

10. ### SPEED X VELOCITY PHYSICS?

100,000 cm = 1,000 m = 1 km forward 1,000,000 mm = 1000 m = 1 km backward Distance is 2 km. Displacement...

2 Answers · Science & Mathematics · 10/09/2020