A car travels 200km. The trip takes 4 hours. The highest speed the car travels at is 100Km/h and lowest speed is 45km/h. Calculate the average speed of the trip?

Write a polynomial function with the given zeros x= -1,0,2show your work

What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules? a. 75% b. 35% c. 25% d. 85%

Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.