Recent content by Karagoz

But in this case, the persons and the carousel is perceived as one object. And in the calculations the object's rotational kinetic energy increases. The rotational inertia when the persons stand at the edge is different (is higher) from the rotational inertia when the persons stand at the...

Her arms would move outwards. It requires force to move things inwards in a rotating object. Slipping things move them outwards. So isn't that some sort of potential energy when you keep things at the centrum in a rotating object?

Maybe you meant the angular velocity (as angular momentum is conserved). As I understand, because of Coriolis effect, moving inwards on the carousel makes it look like it's moving into the same direction as the rotation, hence increases the speed and energy of the rotation. And again because of...

A carousel has the shape of a circular disc with radius 1.80 m and a mass of 300 kg. There are two people with masses of 30 and 45 kg out on the edge while carousel rotates with the angular speed 0.6 rad / s. The people move towards the center of the carousel Calculations show that the...

Summary:: When we have only three classes (Orange, Banana and Other) and three features (Long, Sweet and Yellow), why P(Other|Long, Sweet, Yellow) + P(Banana|Long, Sweet, Yellow) is not equal to 1 when P(Orange|Long, Sweet, Yellow) = 0 ? In this example...

Hi, On this link: https://physicsteacher.in/2020/07/11/the-formula-for-acceleration-due-to-gravity-at-height-h-with-derivation/ They prove the formula for acceleration due to gravity at height h, which is: g1 = g (1 – 2h/R). There are similar articles online. When they go through the last...

So we should write that way: (Mean ± (σ/√n)) ? σ: standard deviation n: number if samples Maybe ½(max - min) used in the high school book to keep it simple and easy for that level.

p = mv/√(1 - v^2/c^2) p = mv/√(1 - v^2/c^2) divide by m, and multiply by √(1 - v^2/c^2) v = p/m * √(1 - v^2/c^2) ^2 both sides v^2 = p^2/m^2 * (1 - v^2/c^2) = p^2/m^2 - (p^2*v^2)/(c^2*m^2) making some changes on the right side so both have same divsor: v^2 = (p^2*c^2)/(m^2*c^2) -...

Homework Statement We know the momentum of an electron, which is: 1,48*10^-21. Momentum is m*v (mass*speed) If we divide the momentum by the mass of the electron to find electron's speed, it'll give a value where v> 3*10^8 m/s. Since speed can't be above speed of light, we have to calculate...

So when writing (A ± c), the A is the "mean", and c is the standard deviation. This is what's shown as "solution to a physics problem" to a website of a high-school physics book. I and F are taken from a table, B values are calculated (length of the conductor is 0.0500 m). They first find...

The means is: (0,055 + 0,06 + 0,0625 + 0,062 + 0,056666667 + 0,062857143) / 6 = 0.0598373 ≈ 0.060 B = (60 ± c) mT But how then do I put the correct number as in c? The correct way is to put the standard deviation as c? Half the difference between max and min is: (0.062857143 - 0.055) / 2 ≈...

Homework Statement [/B] A 0.02 meters long conductor is placed perpendicular in a homogen magnetic field. Current through the conductor is changed. And we have measured the data here: How can we write the magnetic flux density the correct way? How do I know how many digits my answer should...

There are two polarization filters, A and B. Polarization filter A has angle of 0° and B has an angle of 30°. A photon is in superposition, so it doesn't have a definite polarization axis. The likelihood it's passing through a filter is depend on the difference between angle of the...

Homework Statement We kick a box upwards a ramp. The box slides upwards, then slides backwards again. We ignore the air drag and other factors. We only look at the gravity, normal forces and friction forces. Forces on the box when it's moving upwards: Weight of the box is 0.123 KGs. Angle...

So the formula f(x) means yearly interest of n is compounded once a year. But if banks did use g(x), that would mean the yearly interest of n is compounded far more frequently?