A40 kg dog is sitting on top of a hillside and has a potential energy of 1,568 j. what is the height of the hillside? (formula: pe = mgh) how do you figure this?

4 meters

Given in the question,

mass of dog = 40kg

potential energy posses by dog = 1568 J

Formula to use

where m - mass of object

           g - acceleration due to gravity = 9.8 m/s²

           h - height

Plug values in the formula

1568 = 40(9.8)(h)

h = 1568/392

h = 4 m

Explanation:

Potential energy is the energy obtained by an object due to its position.

Mathematically,         P.E = mgh

where               m = mass

                         g = acceleration due to gravity = 9.8 m/s

                         h = height

Therefore, it is given that mass of dog is 40 kg and potential energy is 1,568 J. Hence, calculate the height of hill side as follows.

                                 P.E = mgh

                           1,568 J =  

                                h = 4 m

Thus, we can conclude that the height of the hillside is 4 meter.

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

explanation: