Physics, 18.07.2019 11:00 elondamason
Question 1 a magnet is? a) an object whose electrons can be aligned in the same direction b) an object that cannot align its electrons in the same direction c) is an object that has no nucleus and only has electrons question 2 which elements can be magnetic? a) iron, carbon, and gold b) cobalt, nickel, and iron c) nickel, gold, and aluminum question 3 a bar magnet is dipolar. this means it has poles. a) zero b) one c) two question 4 the poles of magnets are like electrically charged particles. opposite poles (north and south) each other, and like poles (north and north or south and south each other. a) attract, repel b) repel, attract c) repel, repel question 5 which of the following is not part of an electromagnet? a) toothpick b) power source c) metal core question 6 how can you make an electromagnet stronger? a) add a light bulb and a switch b) add more wire coils and/or switch c) add more wire coils and/or batteries. question 7 earth is a giant magnet. a) true b) false
Answers: 2
Physics, 22.06.2019 09:30
Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.
Answers: 2
Physics, 22.06.2019 22:30
Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign
Answers: 3
Physics, 23.06.2019 03:30
One soccer player (a) is moving at 4 km/h when she kicks the ball while another soccer player (b) is moving at 8 km/h. what statement accurately compares their kinetic energy if they have the same mass? a) both soccer players have the same kinetic energy. b) player b has twice the kinetic energy of player a. c) player b has four times the kinetic energy of player a. d) their kinetic energy can't be compared without knowing their mass.
Answers: 1
Question 1 a magnet is? a) an object whose electrons can be aligned in the same direction b) an ob...
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