Summary
- Kepler's laws of orbits
- Newton's explanation of Kepler's law
- Gravitational energy and orbits
sj6 1.5
What mass of a material with density ρ is required to make a hollow spherical shell having inner radius
r1 and outer radius r2?
A. 
B. 
C. 
D. 
Answer
If a 70.0-kg person stands on one foot, the area of which is 0.0200 m2, what pressure do
they exert on the floor?
A. 34.3 kPa
B. 13.7 Pa
C. 3.50 kPa
D. 1.40 Pa
Answer
sj6 14.5
What is the total mass of the Earth's atmosphere? Assume g = 9.80 m/s2
A. 3.55×1014 kg
B. 5.29×1018 kg
C. 8.78×1021 kg
D. 1.15×1025 kg
Answer
What force can a 2-inch (5.08 cm) diameter suction cup support?
A. 0.205 N
B. 205 N
C. 51.0 kN
D. 5.10×107 N
Answer
PoP5 15.18
How tall must a barometer be if it uses red wine
(ρ = 984 kg/m3 ) as its working liquid?
A. 0.964 m
B. 1.02 m
C. 10.5 m
D. 101 m
Answer
sj6 14.6
At a depth of 1000 m in sea water of ρ=1024 kg/m3, how much force must a 30-cm-diameter submarine porthole
withstand?
A. 67.7 kN
B. 283 kN
C. 422 kN
D. 709 kN
Answer
Walker4e
In which of the tubes is the pressure at the dashed line the greatest?
A. A
B. B
C. C
D. D
E. The pressures are all the same at the dashed line.
Answer
gc6 10.12
The maximum gauge pressure in a hydraulic lift is 17.0 atm. What is the largest mass vehicle it can lift if the diameter of the output line is 28.0 cm?
A. 10,800 kg
B. 7,710 kg
C. 1100 kg
D. 476 kg
Answer
A.
answer
A. 34.3 kPa
B. 5.29×1018 kg
answer
B. 205 N
answer
C. 10.5 m
D. 709 kN
E. The pressures are all the same at the dashed line.
The pressure in a fluid is determined only by the depth in the
fluid, not the shape of the container.
answer
A. 10,800 kg
