Answer:
7.90 N/C
Explanation:
<u>Given:</u>
- = initial velocity of the electron =
- = final velocity of the electron = 0 m/s
- = distance traveled by the electron before coming to rest = 9 cm = 0.09 m
<u>Assume:</u>
- = charge on an electron =
- = mass of an electron =
- = electric field along the direction of motion
- = electric force on the electron
- = work done by the electric force
Since the electron is moving in the direction of the electric field, then the electric force on it will act in the direction opposite to its displacement whose magnitude is given by:
Since the displacement of the electron opposite to the direction of electron, the work done by electric force will be given by:
Since the electron enters the region of the uniform electric field with an initial speed u and travels a distance x to come to rest. The change in kinetic energy of the electron can be given by:
Since only the electric force is doing work on the electron, then the change in kinetic energy will be equal to the work done by electric force. This is due to the work-energy theorem.
Hence, the magnitude of electric field is given 7.90 N/C which point in the direction of the displacement of the electron.
Streamlining helps to cut through and reduces the force acting on any object. It helps the object to move swiftly.
Answer:
The acceleration of each ball while in motion is acceleration due to gravity, that is 9.81 m/s²
Explanation:
Here one child simply drops a ball. At the same time, the second child throws a ball downward so that it has an initial speed of 10 m/s.
In first case acceleration on the ball is acceleration due to gravity,
In second case also acceleration on the ball is acceleration due to gravity,
Only gravitational force is acting on both cases so their acceleration is acceleration due to gravity.
The acceleration of each ball while in motion is acceleration due to gravity, that is 9.81 m/s²
Answer:
D
Explanation:
its mass would be the same
because the mass of an object is constant or its independent of the gravitational force or pull
True statements that reflect why infants experience more fluid and electrolyte changes are that dehydration can upset the balance of electrolytes in an infant or child and the newborn is at risk of excessive water loss and hypernatremia as the result of high evaporative water loss through the skin.
As infants are not used to the environment around , they are more sensible towards problems such as Dehydration because of fast metabolism.
Dehydration can upset the balance of electrolytes in an infant or child. Children are especially vulnerable to dehydration due to their small size and fast metabolism, which causes them to replace water and electrolytes at a faster rate than adults.
Infants are particularly prone to the effects of dehydration because of their greater baseline fluid requirements (due to a higher metabolic rate), higher evaporative losses (due to a higher ratio of surface area to volume), and inability to communicate thirst or seek fluid.
The newborn is at risk of excessive water loss and hypernatremia as the result of high evaporative water loss through the skin, insensible water loss (IWL), as well as decreased capacity to concentrate the urine.
To Learn more about dehydration here
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