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What is the buoyant force that acts on a 100-ton ship? (To make things simple, give your
answer in tons.)
If the buoyant force on a submerged object is less than the weight of the object, how do
the densities of the object and water compare?
How does the volume of a completely submerged object compare to the volume of
water displaced?
How does the buoyant force that acts on a fish compare to the weight of the fish?
What is the relationship between liquid pressure and the depth of a liquid? Between
liquid pressure and density?
1. What is the force exerted by Big Ben on the Empire State building? Assume that Big Ben has a mass of 10^8 kilograms and the Empire State building 10^9 kilograms. The distance between them is about 5000 kilometers and Big Ben is due east of the Empire State building
2. How far apart are the centers of two objects with masses of 4,100kg and 6,500kg. The graviational attraction between them is 86 N.
3. The moon has a mass of 7.35 x 10^22 kg and a radius of 1.738 x 10^6 m. At what speed must a rocket be launched from the moon's surface so as not to fall back to the moon.
4. What must be the radius of a star of mass 2 x 1030 kg so that the escape speed from this star is equal to 2 x 10^8 m/s
calculate the force of gravity of the husband and wife, the husband has a mass of 85kg and the wife has a mass of 65kg. they are 0.75 m apart
a student on roller skates glides across a floor with a lunch tray. Total mass is 1.3 kg at waist level 1.1 above the floor from the cash register to her table 23.4 m away how much work is done
2. What is the image distance and image size if a 3.00-cm tall light bulb is placed at a distance of 30.5 cm from a diverging lens having a focal length of -10.2 cm?
1. What is the image distance and image size if a 10.00 cm. tall light bulb placed a distance of 91 cm. from a convex lens having a focal length of 30.8 cm ?
