Answer:
B. The particles that make up material B have more mass than the
particles that make up material A.
Explanation:
Use the equation potential energy =m*g*h
m-mass,
g-gravitational acceleration,
h-height
Potential energy = 2*10*10
=200
This is the unit of the energy
Answer:
The value speed is
Explanation:
From the question we are told that
The mass of the ping pong ball is
The radius is
The depth of the ping pong inside the water is
Gnerally the force with which the ball will emerge will from the water is mathematically represented as
Here B is the Buoyant force on the ball which is mathematically represented as
Here is the volume of the ball which is mathematically represented as
=>
=>
is the density of water with value
So
=>
So
=>
=>
Generally force is mathematically represented as
So
=>
Generally from kinematic equation
Here u is the velocity of the ping pong at depth of 0.3 m and the value is zero given that at that point there was no motion
So
=>
Answer : The correct option is, (B)
Explanation :
Electrical energy : It is defined as the movement of the electrons thought the wire.
Chemical energy : It is a type of energy which is stored in the bonds of a chemical compounds. During the chemical reaction, chemical energy is released in the form of heat.
Sound energy : It is a type of energy which is produced when an object vibrate.
Mechanical energy : It is a type of energy that can be used to do work.
The option A is incorrect because in this process, electrical energy being converted to the sound energy.
The option B is correct because in this process, electrical energy being converted to chemical energy. An oxidation-reduction reaction occurs in the storage battery.
The option C is incorrect because in this process, mechanical energy being converted to mechanical energy.
Hence, the option (B) A storage battery is charged using an electric current is an example of electrical energy being converted to chemical energy.
The infection of plant and fungal cells is different from that of animal cells. Plants have a rigid cell wall made of cellulose, and fungi one of chitin, so most viruses can get inside these cells only after trauma to the cell wall.