Answer:

Explanation:
Four people standing on the ground each of mass and usually this questions have to find the final angular velocity

The radius 
Angular velocity 
The moment of inertia total is 
Momento if inertia


Angular momentum

Solve to w2



Answer:

Explanation:
Given:
Capacitance, C = 85 pF = 85 × 10⁻¹² F
Resistance, R = 75 MΩ = 75×10⁶Ω
Charge in capacitor at any time 't' is given as:

where,
Q₀ = Maximum charge = CE
E = Initial voltage
t = time
also, Q = CV
V= Final voltage = 90% of E = 0.9E
thus, we have

or

or

taking log both sides, we get

or

or

or

The person does not sink into the snow because the force acts on a larger area so that the pressure is less
The edge of the sharp knife has a smaller area so the force acting on the knife produces a larger pressure
Answer: Leandra puts on her mittens because if you do not you will burn your self, due to extremely high temperatures.
Explanation: