an effort of 200N is used to lift a load of 800N by using a lever. If the load is at a distance of 40 cm from the fulcrum then find the effort distance​

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire