You spot a plane that is 1.50 km north, 2.5 km east, and at an altitude 5.0 km above your position. (a) how far from you is the plane? (b) at what angle from due north (in the horizontal plane) are you looking? (c) determine the plane’s position vector (from your location) in terms of the unit vectors, letting be to- ward the east direction, be toward the north direction, and be in vertically upward. (d) at what elevation angle (above the hori- zontal plane of earth) is the airplane?

newton's first law of motion

it becomes positively charged by charging it

  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

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete