Physics, 24.03.2020 22:30 silvernekoo

A 20-cm long solenoid consists of 100 turns of a coil of radius r = 3.0 cm. A current of I_0 in the coiled wire produces a magnetic field of B_0 in the middle of the solenoid.
If we wish to produce a field that is 4-times larger, which of the following changes could work?

a) quadruple the number of turns in the 20-cm long solenoid.
b) half the length of the 100-turn solenoid but maintain 100 turns across that length.
c) quadruple the length of the 100-turn solenoid, but also double the radius of the coil.
d) half the length of the solenoid, and double the number of turns to 200 total turns.
e) double the current in the wire, and double the number of turns in the 20-cm long solenoid.
f) cut the radius of the coil to one-half.

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 13:00

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.

Answers: 1

Answer

Physics, 22.06.2019 16:50

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

Answers: 2

Answer

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 21:00

How is the acceleration of an object in uniform circular motion constant? a - in magnitude only b - in direction only c - in both magnitude and direction d - in magnitude, direction & orientation

Answers: 3

Answer

You know the right answer?

A 20-cm long solenoid consists of 100 turns of a coil of radius r = 3.0 cm. A current of I_0 in the...

Questions