Aball that has a mechanical energy of 65 j has 12 j of kinetic energy. the ball has j of potential energy.

53 J

Explanation:

The mechanical energy of an object (ME) is equal to the sum of the kinetic energy (KE) and the potential energy (PE):

In this example, the ball has mechanical energy ME=65 J and kinetic energy KE=12 J, therefore we can re-arrange the equation to calculate its potential energy:

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2