Answer:
The acceleration will become zero
Explanation:
When the parachute of a falling soldier is opened the wide surface area decreases his velocity. This also translates to the drag force acting on the fallen soldier
The acceleration will become zero when the velocity of the fallen soldier is constant. This principle is the reason the parachute is used for safety reasons .
Answer:
a. 
, 
Explanation:
From the information given;
Using the work-energy theorem
ΔKE = W = 
K =
∴
Since 
and r_1 = 4, and r_2 = 2 (from the missing diagram which is attached below)
Then;
Answer: The weight of a girl with a mass of 40kg is 392.266 Newtons.
Explanation:
There is many activities you can do like running, sit-ups, push-ups, and squats.
Answer:
7.5
Explanation:
The dielectric constant of ceramics is about 7.5.
The dielectric constant of a substance is the ratio of the electric permeability of a substance to the electric permeability of free space.
Dielectric constant gives a good overview about the ability of substance to store charges compared to another.
Most substances have their electric constant and they suggest the ease by which they can store electrical energy. This is very important in developing capacitors.
