Physics, 28.12.2019 05:31 josie122

The north pole of a strong magnet is dragged down an iron nail from the top to the point 50 times. what will most likely happen when the nail is brought near a pile of small paper clips?

a. the nail will not pick up any paper clips because its domains are not aligned.
b. the nail will not pick up any paper clips because its domains have been aligned.
c. the nail will pick up some paper clips because its domains are not aligned.
d. the nail will pick up some paper clips because its domains have been aligned.

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 08:30

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.

Answers: 3

Answer

Physics, 22.06.2019 09:20

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers

Answers: 1

Answer

Physics, 22.06.2019 18:30

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)

Answers: 3

Answer

Physics, 22.06.2019 18:50

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.

Answers: 3

Answer

You know the right answer?

The north pole of a strong magnet is dragged down an iron nail from the top to the point 50 times. w...

Questions