Ohm's law states that:
Explanation:
Ohm's law states that in a conductor, the potential difference across the conductor is directly proportional to the current flowing through it. Mathematically,
where
V is the potential difference
I is the current
The constant of proportionality is called resistance (R), and it gives a measure of "how much the conductor opposes" to the flow of current. Therefore Ohm's law can be rewritten as
where R is the resistance. By rewriting the equation as
we see that the larger the resistance, the lower the current in the conductor.
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speed of balloon which is rising upwards with constant speed is
speed of the camera which is thrown up from the ground
the distance between camera and balloon when it is thrown from the ground
now let say after time "t" the camera is catch by her friend in the balloon
So the position of balloon and camera must be same
Solving above quadratic equation we got
So after t = 0.39 s her friend will get her camera on the balloon.
Answer:
It takes 20 minutes and 24 seconds more on Friday than that of normal days.
Explanation:
Given:
Average speed on normal days (s₁) = 115 km/h = 71 mi/h
Time taken on normal days (t₁) = 1 hr and 13 min
Average speed on Friday (s₂) = 90 km/h = 56 mi/h
Time taken on Friday (t₂) = ?
Distance covered is same in both case.
Converting time from minutes to hours using the conversion factor, we have:
1 min = hour
∴ 13 min =
So,
Using the distance formula for both the days, we get:
Therefore,
So, time taken on Friday is 1.56 hours.
Time taken on Friday is more and the difference is given as:
Time difference = Time taken on Friday - Time on normal days
Time difference = 1.56 - 1.22 = 0.34 hours
Converting time from hours to minutes using the conversion factor, we have:
1 hour = 60 min
∴ 0.34 hours = 0.34 × 60
= 20.4
= 20 mins + 0.4 mins
= 20 min + (0.4 × 60) = 20 mins + 24 s
So, it takes 20 min and 24 seconds more on Friday than that of normal days.
Answer:
The force is
Explanation:
From the question we are told that
The tangential resistive force is
The mass of the wheel is m = 1.80 kg
The diameter of the wheel is
The diameter of the sprocket is
The angular acceleration considered is
Generally the radius of the wheel is
=>
=>
Generally the radius of the sprocket is
=>
=>
Generally the moment of inertia of the wheel is mathematically represented as
=>
=>
Generally the torque experienced by the wheel due to the forces acting on it is mathematically represented as
Here is the force acting on the sprocket
So
Generally the torques that will cause the wheel to move with is mathematically represented as
So