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Physics

  • $1.79 0.50 mm diameter hole is …
    0.50 mm diameter hole is illuminated by light of wavelength 500 nm.What is the width (in mm) of the central maximum on a screen 2.0 m behind the slit?

  • $1.79 1 The drawing shows a crystalline quartz sla
    1. The drawing shows a crystalline quartz slab (nquartz= 1.544) with a rectangular cross section. A ray of light strikes the slab at an incident angle of Ž¸1 = 34‚°, enters the quartz, and travels to point P. This slab is...

  • $1.79 1 While a magnet is moved towards the end of
    1. While a magnet is moved towards the end of a solenoid, a voltage difference is induced between the two ends of the solenoid wire. The voltage difference would be larger if (A) the speed of the magnet were increased. (B)...

  • $1.79 1 A long hollow cylindrical conductor (inner
    1. A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 12 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal...

  • $1.79 14) Evolutionary theories often emphasize th
    14)Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking?even if they are...

  • $1.79 1A certain electric motor uses electricity a
    1.A certain electric motor uses electricity at the rate of 140 W. It has an efficiency of 85 percent when lifting a weight. How large a weight can lift at a speed of 8.0 cm/s?

  • $1.79 1A space station is composed of two cylindri
    1.A space station is composed of two cylindrical chambers; the large outer chamber A surrounds a smaller inner chamber B. To create artificial gravity, the space station is rotating at a rate of 1.00 rpm. The radii of the...

  • $3.22 2.0 g of helium at an ini…
    2.0 g of helium at an initial temperature of 300 K interacts thermally with 8.0 g of oxygen at an initial temperature of 600K . What is the initial thermal energy of each? What is the final thermal energy of each? How...

  • $1.79 4 Arrange the following according to their wavelength s
    4. Arrange the following according to their wavelength, starting with the shortest and going to the longest: radio waves, x-¬‐rays, gamma rays, visible light, microwaves, infrared light, ultraviolet light...

  • $1.79 7 80-g bullet moving at 510 m s penetrates a tree trunk
    7.80-g bullet moving at 510 m/s penetrates a tree trunk to a depth of 5.10 cm. (a) Use work and energy considerations to find the average frictional force that stops the bullet. _____ N (b) Assuming the frictional force is...




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