An object is weightless inside a uniform spherical shell. a) True b) False
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An object is weightless inside a uniform spherical shell.
a) True
b) False
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- 11. a) What is the weight (in newtons) of an 80 kg person at the Earth's surface? b) What is the weight of the same person on the surface of a planet with mass 8.0 x 1024 kg and a radius of 5.5 x 10' m? (G = 6.67 x 101 N* m?/kg?)International computer communications are often carried by optical fibers in cables laid along the ocean floor. If one strand of optical fiber weighs 1.75x10-3 lb/m, what is the mass (in kg) of a cable made of six strands of optical fiber, each long enough to link New York and Paris (9.84 x103 km)?3. Verify Stokes' Theorem for fas F. dr, where F = -yx²i + xy²j + zk, and S is the part of the sphere x² + y² + z² = 4 that lies in the upper half-space z ≥ 0.
- A person weighing 260 lbs on the surface of Earth exerts the same force on a bathroom scale on the surface of Planet X whose mass is 1.9 x Earth's mass. Assume the average density of Earth is 5488 kg/cu.m. determine the density of Planet X in kg/cu.m.Determine the angle between a body diagonal of a cube and any one of its face diagonals.11. a) What is the weight (in newtons) of an 80 kg person at the Earth's surface? b) What is the weight of the same person on the surface of a planet with mass 8.0 x 10* kg and a radius of 5.5 x 10ʻm? (G= 6.67 x 1o"N - m'/kg)
- For item 25: TABLE 1. Determining the Weight of Pans 1 2 Actual value of pan 1, P₁ = 25 grams Actual value of pan 2, P₂ = 24.8 grams L₁ L₂ For item 25: Ⓒ 21.22 20.22 23.22 Ⓒ24.22 28.22 Trial W₁ = 10 g W₂ = 5 g W₁ =15 g W₂ =25 g 14.9 cm 12.6 cm choices for number 25 21 cm 19.8 cm L3 16.2 cm 23.7 cm L₁ 13.4 cm 25.) 11.7 cm For item 26: 26.22 28.37 23.37 P₁ (computed) C25.37 24.22 g P₂ (computed) 24.28 g 24.87 g 26.) choices for number 26 gWhile scuba diving, you collect a fallen stalactite. The stalactite is about the size of your arm. After returning to the surface, the specimen is weighed. Which of the following units would be most reasonable for the specimen’s mass? a. g b. cm3 c. mg d. qt e. litersThree spheres are cut from a certain uniform rock. The two spheres have a radius 4.50 cm. The mass of the other is four times greater. Find its radius.
- 11. What is the mass on Mercury of an object that weighs 784 N on theearth’s surface? (a) 80.0 kg (b) 48.0 kg (c) 118 kg (d) 26.0 kg (e) Thereis not enough information to calculate the mass.The force F is applied 45 degrees counter clockwise from the surface of the slope. The slope is 20 degrees counter clockwise from the horizontal. The magnitude of F is 60lbs. Determine the magnitude of the Force F applies along the slopeAn object weighs 432 N on the surface of the earth. The earth has radius R. If the object is raised to a height of 3R above the earth's surface, what is its weight?