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Questions and Answers
What is the primary effect of the upthrust force acting on an object in water?
What is the primary effect of the upthrust force acting on an object in water?
- It decreases the buoyancy of the object.
- It causes water to be displaced. (correct)
- It increases the density of the object.
- It converts kinetic energy into potential energy.
Under what condition will an object float in water?
Under what condition will an object float in water?
- If it is submerged completely without any air inside.
- If its mass is less than or equal to the mass of water displaced. (correct)
- If it is made of a material denser than water.
- If its volume is greater than the volume of water displaced.
What unit is used to measure the strength of electricity?
What unit is used to measure the strength of electricity?
- Amperes (A)
- Volts (V) (correct)
- Ohms (Ω)
- Watts (W)
Which statement correctly defines voltage in an electrical component?
Which statement correctly defines voltage in an electrical component?
If an object sinks in water, which condition is likely true about its mass and buoyancy?
If an object sinks in water, which condition is likely true about its mass and buoyancy?
Flashcards
Upthrust Force
Upthrust Force
The upward force exerted by fluid that displaces an object.
Displaced Water
Displaced Water
Water that is pushed out of the way by an object submerged in it.
Floatation Condition
Floatation Condition
An object floats if its mass is less than or equal to the displaced water's mass.
Voltage
Voltage
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Electrical Component Needs
Electrical Component Needs
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Study Notes
Upthrust and Floating
- Upthrust is a force that causes water to be displaced or pushed out of the way.
- If the mass of an object is less than or equal to the mass of the water displaced by the upthrust, the object will float.
Electrical Strength
- The strength of electricity is measured in units called volts (V).
- The strength of electricity that a component needs to work is called the voltage.
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