You and your classmates are experimenting with things that can affect the strength of an electromagnet. For this trial, you tested the strength of the electromagnet with 25 coils of wire at different voltages. The data table includes the number of paperclips picked up in each trial. If you were to increase the coils of wire to 50 turns, what would you expect to happen to the strength of the magnet at each of the voltages? Estimate the average number of paperclips that can be picked up for each voltage using 50 turns of wire.
A) 1.5 V = 11.2; 3 V = 16; 4.5 V = 29.5; 6V = 44
B) 1.5 V = 9; 3 V = 10; 4.5 V = 11; 6V = 12
C) 1.5 V = 5.6; 3 V = 8; 4.5 V = 14.6; 6V = 22.4
D) 1.5 V = 10; 3 V = 20; 4.5 V = 30; 6V = 40

Keneila is attempting to ski down a 20 m high friction free hill for the first time. she has a speed 10 m/s at the top. what is her kinetic energy when she is a the bottom, 20 m ? (a)2500 j (b)9800 j (c)12300 j (d)3100j (e)15000j

The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island