In spring also the axis point towards the star Polaris.
Polaris star is located on the celestial sphere, directly above the north pole of earth.
In the constellation of Ursa minor, it is the brightest star among others and also known as North star or Pole star as it is directly above the north pole of earth. Sometimes this star is also called as Stella Polaris.
Speed = distance / time
so 420km / 6hrs = 70km/h
Answer:
Picture
Explanation:
I am trying to solve this Q
but not sure if this a correct answer
or not.
Hope this helps.
a) 189.2 J
b) 13.5 W
Explanation:
a)
The work done by the force on the package is equal to the scalar product between force and displacement:
where F is the force and d is the displacement.
In this problem, the force is:
We know the initial position:
and the final position:
So, the displacement is the difference between the two positions:
Therefore, the scalar product between force and displacement is:
b)
The average power of the machine is the rate of work done per unit time; it is given by
where
W is the work done
t is the time elapsed
In this problem, we have:
W = 189.2 J (work done)
t = 14.0 - 0 = 14.0 s (time elapsed)
Therefore, the average power of the machine is:
Answer:
Explanation:
To solve this problem we will use the Ideal Gas Law, which forms the following formula
Where
= Pressure of Gas
= Volume of Gas
= Moles of Gas
= Constant = 0.0821 atm L/mol K
= Temperature of Gas
There are two states to consider
State 1 is given
= 0.741 atm
= 112 mL
= unknown
= 0.0821 atm L/mol K
= 300K
State 2 is based on Standard Room Temperature Pressure (STP) which are fixed values
= 1 atm
= unknown
= unknown
= 0.0821 atm L/mol K
= 273.15K
Since this is the same mass of gas it can be reasoned that the moles of gas are the same. We rearrange the Gas Law Formula to the following
We input the values and equate the formulas for both states by substituting the value of n
Answer