How do clouds form?
What will be an ideal response?
Clouds form when gases in the atmosphere condense into liquid or solid form. The cause is often convection which lifts warm air from near the surface of a planet into the upper colder regions.
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The magnetic field in a superconducting solenoid is 3.0 T. How much energy per unit volume is stored in the solenoid, in J/m3? ?0 = 4? × 10^?7 T / A/m
Two solenoids are each made of 2 000 turns of copper wire per meter. Solenoid I is 2 m long, while solenoid II is 1 m long. When equal currents are present in the two solenoids, the ratio of the magnetic field BI along the axis of solenoid I to the magnetic field BII along the axis of solenoid II, BI/BII, is
a. 1/4. b. 1/2. c. 1. d. 2 e. 4.
A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.30, and the coefficient of kinetic friction is 0.20
What horizontal force must be applied to the box to cause it to start sliding along the surface?
Two in-phase loudspeakers are some distance apart. They emit sound with a frequency of 572 Hz. A microphone is moved between the speakers to record the wave amplitude at points along that line
What is the spacing between points where constructive interference occurs? The speed of sound in air is 343 m/s. A) 0.300 m B) 0.600 m C) 0.900 m D) 1.20 m E) 1.50 m