Answer:
wait what do u mean by healthy beccause i choose C
Explanation:
In adding measurements, we should remember that the units of the values to be added should be homogeneous which means all addends should have the same units. For this case, we must convert all the masses to units grams. The total mass of the of the all the masses weighed is:
1.21 kg ( 1000 g / 1 kg ) + 546 mg ( 1 g / 1000 mg ) + 23.14 g = 1233.686 grams
To correctly report this, it should be written in scientific notation which would be 1.23 x 10^3 g. In adding, the least number of significant figures should be followed. In this case, it is 3 significant figures.
Answer: time is the same
Explanation: the distance(H) is the same in each case .
we drop the balls , no drag force using basic kimnematics
y =gt*t/2 , yo=0 , vo=0 , y=H , so : t= sqrt(2H/g)
comment: if distance H starts to grow....we could begin to note a difference because of gravity g is smaller as we go up
The free-body diagram of the forces acting on the flag is in the picture in attachment.
We have: the weight, downward, with magnitude
the force of the wind F, acting horizontally, with intensity
and the tension T of the rope. To write the conditions of equilibrium, we must decompose T on both x- and y-axis (x-axis is taken horizontally whil y-axis is taken vertically):
By dividing the second equation by the first one, we get
From which we find
which is the angle of the rope with respect to the horizontal.
By replacing this value into the first equation, we can also find the tension of the rope: