Physics, 16.04.2020 00:31 leo4687

Amanda is holding a compass and notices that the north pole of the compass points towards the north pole of Earth. She is confused because she knows from her science classes that the north poles of two magnets will repel each
other. How can she explain this phenomenon?
The geographic north pole of Earth is actually near Earth's magnetic south pole
The north pole of the compass was probably pushed in the wrong direction by a nearby magnet
Earth's magnetic poles may have reversed positions while Amanda was observing the compass
Earth's poles are not strong enough to attract any handheld magnets, so it was probably a coincidence that the compass
pointed towards the north pole

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 18:30

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?

Answers: 3

Answer

Physics, 22.06.2019 19:50

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.

Answers: 3

Answer

Physics, 22.06.2019 22:10

M1 = 2.8 kg, m2 = 6.72 kg, m3 = 11.2 kg, byas in .is ,is .toof m3 it 0.91 m. (in m/s)

Answers: 3

Answer

Physics, 22.06.2019 23:20

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?

Answers: 2

Answer

You know the right answer?

Amanda is holding a compass and notices that the north pole of the compass points towards the north...

Questions