What two things do you need to know to describe the velocity of an object?
2 answers:
By definition, we have that the speed of an object is given by:
Where,
d: distance [in units of length: meters, feet, miles]
t: time [in units of time: minutes, seconds, hours]
Therefore, knowing the distance traveled, and the time to travel this distance, we can know the speed of an object.
Then, since velocity is a vector, then we need the direction of the vector.
Therefore, the velocity vector can be written as:
Answer:
two things you need to know to describe the velocity of an object are:
1) Magnitude (speed)
2) direction
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Answer:
Explanation:
First of all, we need to calculate the total energy supplied to the calorimeter.
We know that:
V = 3.6 V is the voltage applied
I = 2.6 A is the current
So, the power delivered is
Then, this power is delivered for a time of
t = 350 s
Therefore, the energy supplied is
Finally, the change in temperature of an object is related to the energy supplied by
where in this problem:
E = 3276 J is the energy supplied
C is the heat capacity of the object
is the change in temperature
Solving for C, we find: