A cubical box 25.00 cm on each side is immersed in a fluid. The pressure at the top surface of the box is 109.4 kPa and the pressure on the bottom surface is 112 kPa. What is the density of the fluid?
A) 1000 kg/m3
B) 1030 kg/m3
C) 1060 kg/m3
D) 1090 kg/m3
E) 1120 kg/m3
C
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An electron of mass 9.11 × 10^?31 kg moves with a speed of 0.630c. What is its total energy? (c = 3.00 × 10^8 m/s)
a. 6.37E–14 J b. 2.36E–14 J c. 1.63E–14 J d. 1.06E–13 J e. 1.01E–13 J
If your astrological sign is Aries, the Sun should be in the constellation Aries on your birthday. The dates, according to astrological tradition, during which the Sun is in the constellation Aries are March 21 to April 20th
In which constellation is the Sun actually in, during this time period? A) Aquarius B) Pisces C) Aries D) Taurus E) Gemini
A particle (mass = 6.0 mg) moves with a speed of 4.0 km/s in a direction that makes an angle of 37° above the positive x axis in the xy plane. At the instant it enters a magnetic field of (5.0 ) mT it experiences an acceleration of (8.0 ) m/s2 . What is the charge of the particle?
a. ?4.8 ?C b. 4.0 ?C c. ?4.0 ?C d. 4.8 ?C e. ?5.0 ?C
The efficiency of a Carnot engine operating between 100°C and 0°C is most nearly:
a. 7%. c. 27%. b. 15%. d. 51%.