Answer:
creativity is the personal trait that scientists mainly depend upon when they design an experiment.
Answer:
1. One is more compact than the next hence more density
2. A: 0.67g/cm3 hence will sink
B:0.56g/cm3 hence will sink
C:0.91g/cm3 hence will sink
Explanation:
Use the formula mass/volume to find its density with S.I unit is g/cm3
And to determine weather or not it sink use the relative density formula
Density of substance / Density of water
Answer:
Fnet = 20 Newton
Explanation:
Let the force applied by Brian be Fb.
Let the force applied by Alice be Fa.
<u>Given the following data;</u>
Force, Fb = 10N
Force, Fa = 30N
To find the net force, Fnet;
Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.
Mathematically, net force is given by the formula;
Where;
- Fapp is the applied force
- Fg is the force due to gravitation
Since the two force applied to the box are acting in opposite direction, we would subtract their values to find the net force.
Fnet = Fa - Fb
Fnet = 30 - 10
Fnet = 20 Newton
It’s a.carbon according to Siri
Explanation:
(a) The given data is as follows.
T = = (55 + 273) K
= 328 K
P = 35 bar = 3500 kPa
Let us assume that moles of ethylene present are 1 kmol and according to the ideal gas equation, PV = nRT.
Or, V =
=
= 0.779
Hence, the volume occupied by 18 kg of ethylene at and 35 bar is 0.779 .
(b) The given data is as follows.
V = 0.25
T = = (50 + 273) K
= 323 K
P = 115 bar = 11500 kPa
Using ideal gas equation first, we will calculate its moles as follows.
n =
=
= 1.07 mol
Since, moles =
Hence, mass of ethylene will be calculated as follows.
moles =
1.07 mol =
mass = 29.96 g
Therefore, mass of given ethylene is 29.96 g.