Which of the following will increase if the voltage in a circuit is increased?A.The diameter of the wire.B.Resistance.C.Power.D.
2 answers:
You might be interested in
Answer:
The value is
Explanation:
From the question we are told that
The mass of the ice cube is
The temperature of the ice cube is
The mass of the copper cube is
The final temperature of both substance is
Generally form the law of thermal energy conservation,
The heat lost by the copper cube = heat gained by the ice cube
Generally the heat lost by the copper cube is mathematically represented as
The specific heat of copper is
Generally the heat gained by the ice cube is mathematically represented as
Here L is the latent heat of fusion of the ice with value
So
=>
So
=>
Answer:
The time taken to stop the box equals 1.33 seconds.
Explanation:
Since frictional force always acts opposite to the motion of the box we can find the acceleration that the force produces using newton's second law of motion as shown below:
Given mass of box = 5.0 kg
Frictional force = 30 N
thus
Now to find the time that the box requires to stop can be calculated by first equation of kinematics
The box will stop when it's final velocity becomes zero
Here acceleration is taken as negative since it opposes the motion of the box since frictional force always opposes motion.