Answer:
Explanation:
We define our values, we know that,
our total mass is given by,
making summatory in y, we have that
Re-arrange for a,
Answer:
A(many people think that no energy or matter exists outside the universe)
Explanation:
To solve this problem we will apply the linear motion kinematic equations, specifically the concept of acceleration as a function of speed and time, as well as Newton's second law.
PART A) Acceleration can be described as changing the speed in a period of time therefore,
Force is the proportional change between mass and acceleration therefore
PART B) We will apply the same concept given but now we will change the time to 21s therefore:
Now the force
Answer:
Electrical energy; chemical energy.
Explanation:
Energy can be defined as the ability (capacity) to do work. The various forms of energy are solar energy, electrical energy, chemical energy, thermal energy, wind energy, nuclear energy etc.
In this scenario, electrical energy is present in the charger and the cable while we have chemical energy in the battery of the mobile phone.
The Law of Conservation of Energy states that energy cannot be destroyed but can only be transformed or converted from one form to another.
This ultimately implies that, the electrical energy in the charger and cable is used to charge the battery of the mobile phone as chemical energy.