A fishing reel resting on a shelf 5.00 m above the floor has a gravitational potential energy of 24.5 J with respect to the floor. The reel is now raised to another shelf that is 7.50 m above the floor. What is the new gravitational potential energy of the reel? a. 4.90 J b. 9.81 J c. 73.5 J d. 36.8 J

d. 36.8 J

Explanation:

Given parameters:

Height of the shelf = 5m

Gravitational potential energy  = 24.5J

New height  = 7.5m

Unknown:

New gravitational potential energy = ?

Solution:

The gravitational potential energy of a body is expressed as;

       Gravitational potential energy  = mgh

m is the mass

g is the acceleration due to gravity

h is the height

  Let us find the weight of the fishing reel;

            24.5 = mg x 5

            mg  = 4.9

 mg = weight of the reel

  Since we are using the same reel, weight will be the same;

New gravitational potential energy  = 4.9 x 7.5 = 36.75J

Approximately the new potential energy is 36.8J

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

their crystal patterns have been disrupted by stress