An open milk carton is pierced by an ice pick 12 cm below the surface of the liquid. Calculate the speed at which milk exits through the resulting hole. [Hint: Be careful with units!]

v = 1.54 m/s.

Explanation:

Given that,

An open milk carton is pierced by an ice pick 12 cm below the surface of the liquid.

We need to find the speed at which milk exists through the resulting hole.

Let the speed is v. We can find it using the third equation of motion as follows :

u = 0

So, milk exists through the resulting hole is 1.54 m/s.

false

explanation:

boats, things on boats luggage are way more heavy then water.

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂