Their average velocity is 0.98 m/s east.
Explanation:
The average velocity of an object is defined as the ratio between the displacement and the time taken:
The displacement is a vector connecting the initial point to the final point of motion: so, being displacement a vector, velocity is a vector as well, having the same direction of displacement.
Here, Heather and Matt walk 2.0 km eastward, so their displacement is
d = 2.0 km = 2000 m (east)
While the time they took is
Therefore, their average velocity is
And the direction is the same as the displacement (east).
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Answer:
The correct answer is singing. See the explanation below, please.
Explanation:
The right cerebral hemisphere deals with functions related to emotion: musical, artistic, imagination, intuition. On the other hand, the left hemisphere is related to language, reasoning, numerical and scientific ability.
After all the ice melts the temperature of water inside the beaker starts rising. As the temperature of water inside beaker is less than temperature of surrounding.So heat transfer from surrounding to water inside beaker because we heat transfer from high temperature to low temperature.
Answer: Temperature inversion
Explanation: Temperature inversion is a reverse of the normal temperature flow or distribution of the air,it usually causes temperature to rise as altitude increase towards the troposphere instead of reduction of temperature.
Temperature inversion is caused when warm,dense air flow above cold,less dense air. Temperature inversion is hazardous to man as it traps pollutants close to the Earth surface,this condition limits vertical circulation.