Micah knows that a car had a change in velocity of 15 m/s. To determine acceleration, Micah also needs the_____ of the total trip in seconds.

 The mass  of solid formed  is 2.654  g

       calculation

step 1: write the balanced molecular  equation

=2AgNO3(aq)  + k2CrO4(aq)→ Ag2CrO4(s) + 2 KNO3(aq)

step 2:  calculate the moles of  K2CrO4

moles =  molarity  x volume in  liters

 molarity  = 0.200 M =  0.200   mol/L

volume  = 40 .0 ml  in  liters  = 40/1000 = 0.04 liters

moles is = 0.200 mol/l  x0.04 L =0.008  moles

Step 3:  use the  mole  ratio  to determine the   moles of solid formed( Ag2CrO4)

K2CrO4 :Ag2CrO4  is   1:1  therefore  the  moles of Ag2CrO4  is  also  

0.008 moles

step 4:  calculate the mass  of Ag2CrO4

mass  = moles  x   molar  mass

  from periodic table  the   molar mass   of Ag2Cro4  

=(107.87 x2) + 52 +(16  x4)  =331.74  g/mol

mass = 0.008 moles   x 331.74 = 2.654  g

Answer: tyre made out of rubber, tread pattern on wheels

Explanation:

the material of rubber generally grips better than other materials whilst still allows the car to move smoothly

tread patterns are essential on all tires as it increases the traction between the wheels and the road which increases the friction

Answer:

Identify the formula to calculate velocity.

Explanation:

Sorry I have no explanation.

:(

But hope this helps!!!

Answer:

f=ma

mass of box =7kg

Explanation:

The answer is that it is lower because it is harder to get something to move than to make it continue moving due to molecular interactions and inertia.

He reasoned that there must be a source of positive charge within the atom to counterbalance the negative charge on the electrons.