A girl pushes her little brother on his sled with a force of 300 N for 750 m. a. How much work is this? b. How much energy is used? c. How much power does she use if it takes her 25s? d. How much power does she use if she runs and complete the 750m in 10s?

For the below questions, consider a consumer that consumes two goods, x and z with the following utility function. u with bar on top space equals space x to the power of 1 third end exponent z to the power of 2 over 3 end exponent suppose initial values for income and the prices of goods x and z are y equals 90, p subscript x equals space 10, and p subscript z equals 15 respectively, then the price of good x falls to syntax error from line 1 column 89 to line 1 column 100. unexpected '\'.. what is the magnitude of the total effect