Physics, 30.11.2019 10:31, sarahabuadas7396
You are on roller blades on top of a small hill. your potential energy is equal to 1,000.0 joules. the last time
you checked your mass was 60.0 kilograms.
a. what is your weight in newtons?
b. what is the height of the hill?
c. if you start skating down this hill, your potential energy will be converted to kinetic energy. at the
bottom of the hill, your kinetic energy will be equal to your potential energy at the top. what will be
your speed at the bottom of the hill?
Answers: 3
Physics, 21.06.2019 20:00, mystaxkkks
You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?
Answers: 1
Physics, 22.06.2019 14:40, kellypechacekoyc1b3
Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?
Answers: 3
Physics, 22.06.2019 22:50, cbogrett
Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. these cyclotrons typically accelerate h- (the hydride ion, which has one proton and two electrons) to an energy of 5 mev to 20 mev. this ion has a mass very close to that of a proton because the electron mass is negligible—about 1 2000 of the proton’s mass. a typical magnetic field in such cyclotrons is 1.9 t. (a) what is the speed of a 5.0-mev h-? (b) if the h- has energy 5.0 mev and b = 1.9 t, what is the radius of this ion’s circular orbit?
Answers: 1
You are on roller blades on top of a small hill. your potential energy is equal to 1,000.0 joules. t...
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