This is not homework. I'm studying fluid mechanics/dynamics in the heart/blood vessels and I just want to understand this, so I can have a better appreciation for it's clinical relevance. I'm more of biology/biochem type of person so this has been a bit of challenge. I have basic physics course...
F=Gm1m2/r^2
2.67 = (6.67x10^-11)(m1xm2)/25000000
M1xM2 = 1 x 10^18
M2 = 1x10^18/M1 (Equation 1)
From the question stem, we know M1 + M2 = 2.5x10^9 (Equation 2)
So, substituting Equation 1 into Equation 2 we get:
1x10^18/m1 + m1 = 2.5 x 10^9
I'M STUCK FROM HERE ONWARDS... in the solutions...
I thought the definition of a Lever was a machine that will decrease the force needed to do work by increasing distance. Since Class III levers always have a mechanical advantage less than 1, and they actually increase the force needed, how could they be considered levers at all? I don't get it.
Homework Statement
I got an experimental vertical acceleration of -12 m/s^2 of projectile motion for an experiment I did at home where I just had to throw a ball at around 45 degree to the horizontal up in the air and record it's motion, then analyze the motion via computer software. Obviously...
Homework Statement
How come altitude of a mountain is a scalar?
Homework Equations
Scalars = only magnitude
Vectors = have magnitude & direction
The Attempt at a Solution
- Doesn't altitude of a mountain have both magnitude and direction (direction being measured straight up 90 degrees to the...
Figured it out.
Yes, measuring a distance of 1 meter using this tape that has units of inches. Yes, I just wanted to calculate the uncertainty, but it's basically the smallest increment by which the measuring tool (tape in this case) increases... so +/- 0.0625 inches.
Homework Statement
This conversion factor 1m = 39.3701 inches was used, when measuring a tape that had inches on it to a full meter. The measuring tape increased by 0.0625 inch increments, so the 1 meter (39.3701) was estimated to be in between the 39.3125 and 39.3750 on the actual measuring...
Homework Statement
An object of mass m=2.3±0.1kg moves at a speed of v=1.25±0.03m/s. Calculate the kinetic energy (K=1/2mv2) of the object and estimate the uncertainty δK?
Homework Equations
- Addition error propagation--> z = x + y and the Limit error--> δz = δx + δy
-...
Homework Statement
Calculate the circumference (including uncertainty) of a circle whose measured radius is r=7.3 ± 0.2cm.
2.Relevant equations & 3.The attempt at a solution
- Circumference of circle --> C = 2πr = 2π7.3 = 45.87 cm
- Exact constant error propagation --> z =...
Homework Statement
The problem asks to convert time in minutes to time in hours, and to also calculate the uncertainty for the time in hours.Specifically 10 minutes +/- 0.2min being converted to hours with uncertainty.
2. Homework Equations & 3.The attempt at a solution
conversion of time...
Yea, the Kelvin scale makes more intuitive sense to me, but yea the arbitrary nature of that zero point makes sense too, as representing another temperature scale. Thank you!