<span>c.the chemical energy of the fluids inside the wand</span>
Sn is Tin which has 50 atomic number
it means it has 50 electrons in its outer shells
+2 shows its valency
plus sign comes when electrons are removed from an atom
so here 2 electrons are removed from Sn atom
remaining electrons are 50-2
48 electrons
Answer:
H = 109.14 cm
Explanation:
given,
Assume ,
Total energy be equal to 1 unit
Balance of energy after first collision = 0.78 x 1 unit
= 0.78 unit
Balance after second collision = 0.78 ^2 unit
= 0.6084 unit
Balance after third collision = 0.78 ^3 unit
= 0.475 unit
height achieved by the third collision will be equal to energy remained
H be the height achieved after 3 collision
0.475 ( m g h) = m g H
H = 0.475 x h
H = 0.475 x 2.3 m
H = 1.0914 m
H = 109.14 cm
Answer:
The work-energy theorem states that a force acting on a particle as it moves over a <u>distance</u> changes the <u>kinetic</u> energy of the particle if the force has a component parallel to the motion.
Explanation:
The correct answer is presented below and all reasons are presented to explain all facts:
The work-energy theorem states that a force acting on a particle as it moves over a <u>distance</u> changes the <u>kinetic</u> energy of the particle if the force has a component parallel to the motion.
Reasons:
According to the Work-Energy Theorem, the work done on a particle () equals the change in its kinetic energy (). That is:
(1)
By definition of work we expand this definition:
(2)
Where:
- Vector force.
- Vector travelled distance.
And by definition of dot product we conclude that:
Where:
- Magnitude of the vector force.
- Magnitude of the differential of the vector travelled distance.
- Angle between vectors, measured in sexagesimal degrees.
- Initial and final position of the particle.
From this expression we infer that change in kinetic energy is maximum if and only if in every point of the path travelled by the particle. In addition, change in kinetic energy occurs when component of force parallel to path is not zero.