Examlex
Superconductors can carry very large currents with no resistance.If a superconducting wire is formed into a solenoid of length 50.0 cm with 500 turns,what is the magnetic field inside the solenoid when the current is 104 A? (µ0 = 4p x 10-7 T*m/A)
Farming Populations
Communities of people who primarily engage in agriculture to produce food and other crops.
Portal Doorway
An architectural element or metaphorical concept implying transition between distinct worlds, dimensions, or phases.
Stonehenge
A prehistoric monument in Wiltshire, England, made of a circle of standing stones.
Winter Solstice
The shortest day of the year, occurring when one of the Earth's poles has its maximum tilt away from the Sun, marking the start of winter.
Q17: The Earth is 1.49 x 10<sup>11 </sup>m
Q28: When a light bulb is turned on,its
Q30: What is the angle of incidence
Q41: For a standing wave on a string
Q42: Monochromatic light hits a piece of glass.What
Q49: Niobium metal becomes a superconductor (with electrical
Q64: A fiber optic cable (n =
Q67: A light ray in air is
Q70: Equal wavelength waves of amplitude 0.25 m
Q75: The Doppler shift of ultrasonic waves can