The two jovian planets that contain the highest proportions of hydrogen compounds are

A. Saturn and Neptune
B. Jupiter and Neptune
C. Jupiter and Saturn
D. Saturn and Uranus
E. Uranus and Neptune
F. Jupiter and Uranus


Answer: E. Uranus and Neptune

Physics & Space Science

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What does this diagram represent?

A) a particle and antiparticle colliding and converting all their mass into photons B) two photons spontaneously turning into a particle and an antiparticle C) a blue electron and a red electron turning into to pink light rays D) a particle of ordinary matter and a particle of dark matter colliding and becoming two photons of dark energy

Physics & Space Science

Glycerin, with a viscosity of 1.50 Ns/m2, is flowing with an average speed of 1.20 m/s through a tube that has a radius of 5.00 mm and is 25.0 cm long. What is the drop in pressure?

A) 144 kPa B) 45.8 kPa C) 72.0 kPa D) 76.3 kPa E) 129 kPa

Physics & Space Science

The heat transfer rate from hot air by convection at 100°C flowing over one side of a flat plate with dimensions 0.1-m by 0.5-m is determined to be 125 W when the surface of the plate is kept at 30°C. What is the average convective heat transfer coefficient between the plate and the air?

GIVEN
• Flat plate, 0.1-m by 0.5-m, with hot air flowing over it
• Temperature of plate surface (Ts) = 30°C
• Air temperature (T?) = 100°C
• Rate of heat transfer (q) = 125 W
FIND
• The average convective heat transfer coefficient, hc, between the plate and the air
ASSUMPTION
• Steady state conditions exist
SKETCH

Physics & Space Science

Which of the following statements best describes the Franck-Hertz experiment?

A. Alpha particles slam into gold foil to measure the recoil angle. B. Light incident on a metal surface ejects electrons and the more energetic ones establish a current. C. Accelerated electrons collide with atoms in a gas and excite them. D. A strong electric field tears electrons off of atoms in a gas to establish a current. E. Passing electrons through a magnetic field to separate electrons with different spin components.

Physics & Space Science