physical science
asked by
jane

posted by drwls
Respond to this Question
Similar Questions

science
if an engine must do 500 joules of ork to pull a 10 kg load up to a height of 4 meters what is the efficiency of the engine 
physical science
if an engine must do 500 joules of work to pull a 10 kg load up to to a height of 4 meters ,what is the efficiency of the engine ? 
Physical Science
If an engine must do 500 joules of work to pull a 100 N load up to a height of 4 meters, What is the efficiency of the engine? 
physics
If 250 joules of work are performed by an engine using 600 joules of energy in 5 seconds, what is the efficiency of the engine? 
Science check
I was wondering if someone could check the problems for me? Thanks I can go back and show work if needed..this was just easier to type out. 1)An object has a mass of 615 grams and a volume of 105cm3.What is the density of the 
mathvariation 2(steve,reiny,reed) pls I need help!
the force E needed to make a machine pull a load is partly constant and partly varies as the load to be pulled itself.when the load is 20g,the force needed is 1.4n,where as the force needed for 30g load is 2N. Find the: A)law 
maths (variation)
different questions pls! Very urgent! 1) the force E needed to make a machine pull,a load is partly constant and partly varies as the load to be pulled itself.when the load is 20g,the force needed is 1.4n,where as the force needed 
Math
The force E needed to make a machine pull a load is partly constant and partly varies as the load L to be pulled.For a load of 20kg the force needed is 14N while 20N is needed for a load of 30kg find: a)The formula connecting E 
physics
a giant crane was tested by lifting 2.232*10^6 kg load.find the magnitude of the force needed to lift the load with a net acceleration of 0m/s^2. if the same force is applied to pull the load up a smooth slope that makes 30 
physics
a giant crane was tested by lifting 2.232*10^6 kg load.find the magnitude of the force needed to lift the load with a net acceleration of 0m/s^2. if the same force is applied to pull the load up a smooth slope that makes 30