0
What is the efficiency of a cars engine when heat input is 2000000 joules and the waste heat is 1500000 joules?
Wiki User
∙ 14y ago
25%
Take Input - Waste = Difference
then D / I = Effeciency
so, 400000 - 300000 = 100000
and 100000 / 400000 = .25 or 25%
now ask the teacher next time...
Dont answer the question if you are going to get an attitude...
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoAssuming the fuel gets turned into heat, kinetic energy and nothing else... (no sound, no vibrations, no light etc)
(2000000 - 1500000) / 2000000 * 100 = 25%
25% is used, the rest (75%) is wasted.
Wiki User
∙ 12y agoEfficiency is output/input, waste heat is what not going to output.
Input = Output + Waste heat
so
Output = Input - Waste heat and efficiency = (input - waste heat)/output
Just press the calculator for the answer outcome XD
25% (apex) :)
Wiki User
∙ 13y ago25%, because three quarters of the input is lost to the environment
Wiki User
∙ 14y agoThe useful work output is (100,000 - 75,000) = 25,000 joules.
Efficiency = (25,000/100,000) = 25%
Wiki User
∙ 13y agoIf you subtract those two, you get the useful energy. Then divide the useful energy by the input, to get the efficiency.
maddiebarraza
APEX: 25%
Wiki User
∙ 15y ago25 percent
Anonymous
25%
Add your answer:
Earn +20 pts
How many joules are in 56 kilo joules?
56 kilo joules = 56,000 joules
What is the heat of solution for barium chloride in joules?
103 joules
Can you Convert 5.42 calories to joules?
Yes. 5.42 calories equates to 22.692456 joules.
How many joules are required to boil 21.1 g of water at 100 C?
The needed heat is 47,65 Joules.
What is the total amount of heat energy in joules absorbed by 25.0 grams of water when the temperature of the water increased from 24.0 C to 36.0 C?
2520 Joules = (X)(4.180J/gC)(30C-10C) 2520J = 83.6X 30.14 grams of water.
What is efficiency of lawn mower's engine when the heat input is 1000 joules and the waste heat is 750 joules?
25 percent
What is the efficiency of a street cleaner's engine when the heat input is 200000 joules and the heat waste is 150000 joules?
25 percent
What is the efficiency of lawn mower's engine when the heat input is 1000 joules and the waste heat is 750 joules?
25 percent
What is the efficiency of a car's engine when the heat input is 100000 joules and the waste heat is 75000 joules?
25%
What is efficiency measured in?
Efficiency is measured in joules.
What is the efficiency of a street cleaners engine when the heat input is 200 000 joules and the waste heat is 150 000 joules?
200,000-150,000= 50,000 25 %
If an engine must do 500 joules of work to pull a 100 newtons load up to a height of 4 meters What is the efficiency of the engine?
400
What is the machine efficiency of a machine that produces 400 joules of work output from a work input of 500 joules?
The efficiency is 80%. To find the efficiency, 400/500 = 80%.
What is the mechanical efficiency of a machine that produces 400 joules of work output from work input of 500 joules?
The efficiency is 80%. To find the efficiency, 400/500 = 80%.
What is the efficiency of a pulley system when its work out equals 100 joules and its work in equals 150 joules?
If the input energy is 210 joules and the efficiency of the system is 30%,then the output energy is30% of 210 = (0.3 x 210) = 63 joules.
What is the efficiency of a machine that requires 100 joules of input energy to do 35 joules of useful work?
The machine efficiency is 35 percent (35/100).
What is the mechanical efficiency of a machine that produce 400 joules of work output from a work input of 500 joules?
The efficiency is 80%. To find the efficiency, 400/500 = 80%.
