What type of simple machine is in scotch tape dispenser?

What experiment can test the theory that air has weight? Which type of em spectrum has the order highest to the lowest wavelength? What is mwant by wave trapper? How are the input and output forces of the parts of a compound machine relate? What is the differrence between a contact force and a field force? What is the resistance of a 40 watt bulb? What is the density of a glass stopper that weighed two comma four newtons in air two newtons in water with a density of one thousand? What China's main source of energy? What is motion relative to? How much is 11st in kilos? How much work is done by the force of gravity when a 15 kilogram rock falls off a bridge 20 meters high? How does an apple power a clock? What is the definition of density in scientific terms? Do objects usually travel at a constant speed? What are the difference between the law of conversation of energy and law of degradation? What is the relationship between the strength of magnetic fields and the distance between 2 magnets? What knife can pierce world's strongest metal? What Italian scientist help design the atomic bomb? what forces most strongly affects a picture hanging on nail on the wall? What is the maximum distance you can pull underground wire before needing a pull box?

What type of simple machine is in scotch tape dispenser?