Answer:
potential energy
Answer : During the winding of the spring of a clock, the kinetic energy gets converted into stored potential energy of the spring.
 
        
             
        
        
        
The particle has constant acceleration according to

Its velocity at time  is
 is



Then the particle has position at time  according to
 according to


At at the point (3, 6, 9), i.e. when  , it has speed 8, so that
, it has speed 8, so that

We know that at some time  , the particle is at the point (5, 2, 7), which tells us
, the particle is at the point (5, 2, 7), which tells us

and in particular we see that

and

Then



That is, there are two possible initial velocities for which the particle can travel between (3, 6, 9) and (5, 2, 7) with the given acceleration vector and given that it starts with a speed of 8. Then there are two possible solutions for its position vector; one of them is

 
        
             
        
        
        
Answer:
49.3 N
Explanation:
Given that Pulling up on a rope, you lift a 4.25 kg bucket of water from a well with an acceleration of 1.80 m/s2 . What is the tension in the rope?
The weight of the bucket of water = mg.
Weight = 4.25 × 9.8
Weight = 41.65 N
The tension and the weight will be opposite in direction. 
Total force = ma
T - mg = ma
Make tension T the subject of formula 
T = ma + mg
T = m ( a + g )
Substitutes all the parameters into the formula 
T = 4.25 ( 1.8 + 9.8 )
T = 4.25 ( 11.6 )
T = 49.3 N
Therefore, the tension in the rope is 49.3 N approximately. 
  
        
             
        
        
        
Answer:
materials which exhibit a spontaneous net magnetization at the atomic level, even in the absence of an external magnetic field.
Explanation:
When a material is placed within a magnetic field, the magnetic forces of the material's electrons will be affected. This effect is known as Faraday's Law of Magnetic Induction. However, materials can react quite differently to the presence of an external magnetic field. This reaction is dependent on a number of factors, such as the atomic and molecular structure of the material, and the net magnetic field associated with the atoms. The magnetic moments associated with atoms have three origins. These are the electron motion, the change in motion caused by an external magnetic field, and the spin of the electrons.
 
        
             
        
        
        
I'm assuming the question is time it will take for ball to reach ground, if it is then set equation to zero then use the quadratic formula, the possible t value is your answer then