What is the force on the top surface of a 10.5 cm-diameter soup can that is submerged in 350 m of seawater, whose density is 1017 
The air pressure outside is 101.5 kPa.
A. 30.2 kN
B. 31.1 kN
C. 124 kN
D. 121 kN
D. 121 kN
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Kinetic Energy: An electron has a relativistic momentum of 1.1 × 10-21 kg ? m/s. What percent of its total energy is its kinetic energy? (melectron = 9.11 ×10-31 kg, c = 3.0 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
If the escape speed of a star is equal to the speed of light, its radius is the so-called Schwarzschild radius. What is the Schwarzschild radius of the sun, whose mass is 
A. 4.5 km B. 1.5 km C. 5.9 km D. 3.0 km
A sample of a diatomic ideal gas occupies 33.6 L under standard conditions. How many moles of gas are in the sample?
A) 3.0 B) 4.5 C) 1.5 D) 2.0 E) 0.75
A 5-kg piece of lead (specific heat 0.03 cal/g×°C) having a temperature of 80°C is added to 500 g of water having a temperature of 20°C. What is the final equilibrium temperature (in °C) of the system?
a. 79 b. 26 c. 54 d. 34 e. 20