Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Physics Chapter 19
| Question | Answer |
|---|---|
| Pressure in a liquid depends on the _____. | depth of the measuring point and density of the liquid |
| Archimedes' principle says that an object is buoyed up by a force that is equal to the _____. | weight of the fluid displaced |
| Water pressure on a submerged object is greatest against the _____. | bottom of the object |
| A block of balsa wood floats on water while a same-size block of lead lies submerged in the water. The buoyant force is __________. | greater on the lead |
| The buoyant force on an object is least when the object is _____. | partly submerged |
| The volume of water displaced by a floating 10,000-N boat _____. | is the volume of 10,000 N of water |
| One liter of water weighs about 10 N. Suppose a 2-liter container is filled with 300 N of mercury and then lowered into a container of water. Assuming the container is completely submerged, what is the buoyant force acting on it? | 20N |
| Suppose a stone weighs 8 N in the air, but in water it weighs only 3 N. What is the buoyant force acting on the stone? | 5N |
| A hydraulic press multiplies a force by 100. This multiplication is done at the expense of _____. | the distance through which the force acts |
| Pascal's principle says that changes in pressure at any point in an enclosed fluid _____. | are transmitted to all points in the fluid |
| In a hydraulic device, the output piston has 100 times the cross-section area as the input piston. This means the device will multiply force _____. | 100 times |
| When you float in salt water compared to floating in fresh water, the buoyant force that supports you is _____. | the same |
| An ice cube floating in a glass of water contains many air bubbles. When the ice melts, the water level will _____. | remain unchanged |
| A hydraulic press multiplies a force by 100. This multiplication is done at the expense of _____. | the distance through which the force acts |
| A hydraulic arrangement consists of a water-filled U-tube that is wider on one end than on the other. Pistons are fitted in both ends. To multiply an input force, the input end should be the one having the _____. | smaller-diameter piston |
| When a boat sails from fresh water to salt water, the boat will float _____. | higher in the salt water |
| When first put in water, a plastic toy boat will sink until _____. | it displaces a weight of water equal to its own weight |
| If an object has a density greater than the density of water, it will _____. | sink |
| A boat loaded with a barrel of water floats in a swimming pool. When the water in the barrel is poured overboard, the swimming pool level will _____. | remain unchanged |
| There is a legend of a Dutch boy who bravely held back the Atlantic Ocean by plugging a leak near the top of a dike with his finger until help arrived. Which of the following is most likely? | The force on his finger would have been less than 1 N. |
| If a weighted, air-filled balloon sinks in a lake, it will _____. | always sink to the bottom |
| A kilogram of lead and a kilogram of aluminum are submerged in water. The buoyant force is _____. | greater on the aluminum |
| Compared to an empty ship, the same ship loaded with plastic foam will float _____. | lower in the water |
| The principle reason a hydraulic press works is that it is an exception to energy conservation. | Always false |
Created by:
Cinda