Answer:
scalar d = 54000 m
, v_average = 16,667 m / s
vector d = -4000 m
, moved 4000 to the west
v_average = 0
Explanation:
his is a uniform motion exercise, but we must be careful with quantities that are scalars and vector quantities
The distance traveled is a scalar
d = d₁ + d₂
d = 25000 + 29000
d = 54000 m
the speed is a scalar, in the exercise it is not specified if the speed of each trajectory or the average speed. Therefore we will calculate the two
v₁ = d₁ / t₁
v₁ = 25000/1500
v₁ = 16,667 m / s
v₂ = 29000/1740
v₂ = 16,667 m / s
Since the two speeds are equal, the average speed is
v = (v1 + v2) / 2
v_average = 16,667 m / s
now let's calculate the displacement that is a vector, so it has direction in addition to modules
suppose the eastward direction is positive and the bold are vectors
d = d₁ - d₂
d = 25000 - 29000
d = -4000 m
this means that it moved 4000 to the west
velocity is a vector, we assume positive eastward movement
v₁ = 16,667 m / s
v₂ = - 16,667 m / s
v_average = (v1 -v2) / 2
v_average = 0
Accordingly Newton's findings, astronomy and physics have industrialized
hugely over the period. Scientists now recognize that every object in the
world has a force that draws each other and the power of the force hinge on the
mass of the object. Also, Newton's Laws of Motion offer individuals a
better understanding of what is likely concerning movement. This is very helpful,
particularly in mechanics and space travel. Generally, Newton had a
huge and permanent impact on science.
Answer:
The SI base units are the standard units of measurement defined by the International System of Units (SI) for the seven base quantities of what is now known as the International System of Quantities: they are notably a basic set from which all other SI units can be derived.
Explanation:
in a monoprotic acid , its capable of dissociating 1 H⁺ ion . The base used is NaOH which is capable of giving out 1 OH⁻ ion.
Therefore both base and acid react in a 1:1 molar ratio, that means for each 1 mol of monoprotic acid there is , it requires 1 mol of NaOH to be neutralised.
So at equivalence point the number of acid moles present should react with an equal number of NaOH moles to be neutralised
number of NaOH moles added - concentration x volume
number of NaOH moles - 0.0950 mol/dm³ x 27.4 x 10⁻³ dm³ = 0.00260 mol
since molar ratio of NaOH to Acid is 1:1
number of acid moles present is also - 0.00260 mol
mass of acid added - 0.2140 g
we can find molar mass using following equation
molar mass = mass / number of moles
molar mass = 0.2140 g / 0.00260 mol = 82.3 g/mol
therefore molar mass of monoprotic acid is 82.3 g/mol
Answer:
3 Ω
Explanation:
Recall that Voltage = Current x Resistance
We are given that voltage = 6.0V and Current is 2.0 A.
Substituting these into the equation:
Voltage = Current x Resistance
6.0 = 2.0 x Resistance
Resistance = 6.0 / 2.0 = 3 Ω
