A6 kg penguin gets onto a ferris wheel, with a radius of 5m, and stands on a bathroom scale. the wheel starts rotating with a constant acceleration of .001 rad/s2 for two minutes and then runs at a constant angular velocity. after the wheel is rotating at a constant rate, what is the penguin’s a) angular momentum about the center of the ferris wheel, b) tangential velocity c) maximum & minimum readings on the bathroom scale (and where do they occur? )

Part a)

Part b)

Part c)

Explanation:

As we know that Ferris wheel start from rest with angular acceleration

time taken = 2 min

so here we have its angular speed after t = 2min given as

Part a)

Angular momentum of the Penguine about the center of the wheel is given as

Part b)

tangential speed is given as

Part c)

Maximum reading of the scale at the lowest point is given as

Minimum reading of the scale at the top point is given as

The correct answer is option D.

Explanation:

Cobalt and Nickel both are transition metals which means that their last electron enter d-orbitals.

These two elements have similar atomic masses but differ in the atomic number.

Atomic number is equal to the number of protons or electrons present in that element.

Atomic number = number of protons =  number of electrons

Atomic Mass is the sum of protons and neutrons in an element

Atomic mass = Number of protons + Number of neutrons

Atomic Number = 27

Number of protons = 27

Atomic mass = 59

Number of neutrons = 59 - 27 = 32

Hence, Number of protons in this element is 27 and number of neutrons are 32.

Atomic Number = 28

Number of protons = 28

Atomic mass = 59

Number of neutrons = 59 - 28 = 31

Hence, Number of protons in this element is 28 and number of neutrons are 31.

Hence, the correct answer is option D.