Advantage and Efficiency
This deals with the output and input of force.
mechanical advantage
a pully that increases the amount of force applied but does not change the direction of the force.
movable.
The transfer of energy to an object by using a force that causes the object to move in the direction of the force.
Work
This kind of energy is created when playing an acoustic instrument.
sound energy
name three natural resources.
coal, wind, uranium, oil, hydro, solar, geothermal, hydrogen, electricity, natural gas, biomass, tidal,
What is the ME of a machine whose work input is 90 J and the work output is 54 J
60%
A doorknob is this kind of machine
wheel and axle
For work to be done on an object, the object must move in the what?
same direction as the force.
what is the most common energy that we convert?
electrical
Waht is a nonrenewable resource formed from the remains of organisms that lived long ago.
fossil fuel
A lever is designed to have a MA of 4. If the lever applies a force of 1640 N to an object, how much force is being applied to the lever?
410
A human arm is this kind of machine. BE SPECIFIC
class 3 lever
Work depends on two things.
distance and force
energy must be used to overcome this?
friction
Being this isn’t a permanent label but rather a quality that a resource current has.
renewable
A force of 44 N is applied to a screwdriver to pry a lid offa can of paint. the screwdriver applies 330 of force to the lid. What is the MA?
7.5
name three incline plane exmaples
ramp, slide, street, funnel, roof
The rate at which work is done or energy is transformed. Also tell me what it's unit is.
power in Joules
photosynthesis deals with these two energies
light and chemical
As i mentioned, what does most if not all power plants do with energy resources?
coverts it into electrical energy for consumption.
What is the work input if the work output is 30 J and the ME 27%?
111.111
What are the three main parts of levers.
the force, load, and fulcrum.
The difference between work input and work output?
input - the work done on a machine.
output - the work done by the machine.
kinetic energy and potential energy both involve this?
movement
this resource requires little land and can be almost an unlimited resource of energy if the location is correct.
geothermal.