Chemistry, 04.12.2020 07:00, rhineharttori
A group of students conducted an activity for science class. They used a galvanometer, which is an instrument that can detect an electric current. They followed these steps:
Obtain a 100 foot long electrical extension cord.
Connect each end of the extension cord to the galvanometer.
Using duct tape, secure part of the extension cord to the ground as shown below.
Swing the top part of the extension cord as if a person were to enter to jump rope.
Have a student observe the galvanometer while the cord is rotating.
Students observed that the needle of the galvanometer moves. What does this demonstrate?
A.
Moving an electrical conducting wire through a magnetic field changes the wire's conductivity.
B.
Moving an electrical conducting wire close to the ground changes Earth's magnetic field.
C.
Moving an electrical conductor through Earth's magnetic field induces an electric current.
D.
Moving an electrical conductor next to an electric current produces a magnetic field.
Answers: 3
Chemistry, 22.06.2019 09:00, bibhu42kumarp7o4ss
At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure
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Chemistry, 22.06.2019 17:20, banna01man
Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.
Answers: 2
Chemistry, 22.06.2019 17:40, aaliyahthomas37
Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.
Answers: 1
A group of students conducted an activity for science class. They used a galvanometer, which is an i...
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