Answer:
Explanation:
Let consider a car travelling at a speed . The ratio of final kinetic energy to initial kinetic energy:
The final speed is:
In a position vs time graph if the line is curved then the motion of the object may be
1 answer:
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Answer:
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
Q = Heat absorbed= 16.7 kJ = 16700 J (1kJ=1000J)
m= mass of benzene = 225 g
c = specific heat capacity = 1.74 J/gK
Initial temperature of the water = = 20.0°C = 293 k
Final temperature of the water = = ?
Change in temperature ,
Putting in the values, we get:
The final temperature will be
Answer:
A.The positive z-direction
Explanation:
We are given that
Linear charge density of long line which is located on the x-axis=
Linear charge density of another long line which is located on the y-axis=
We have to find the direction of electric field at z=a on the positive z-axis if and
are positive.
The direction of electric field at z=a on the positive z-axis is positive z-direction .
Because and
are positive and the electric field is applied away from the positive charge.
Hence, option A is true.
A.The positive z-direction