1). There will be one great spark across the terminals of the switch as it closes.
2). Current will start to flow through the wire, from the ( + ) of the left-side battery, all the way around the circuit, through the coils wrapped around the nail, to the ( - ) of the right-side battery.
3). The current will be quite large, because the only resistance in the circuit is a bunch of wire, I = V / R, V is around 3 volts, and the resistance of wire is very low.
4). The magnetic field around the wire due to the current flowing through it will cause the nail to become temporarily magnetized.
5). The batteries will peter out after a comparatively short time, the current will die out, and the nail will become non-magnetic, even if the switch stays closed. The batteries may even be warm, but in any case, they will be toast.
Answer:
As the runner was travelling for 9 seconds, he covered a distance of 99.9 metres. 9 seconds x 9 seconds = 81 seconds squared, and the runner covers roughly 1.23 metres in distance every second squared.
Explanation:
I believe it’s 45 m/s, correct me if wrong
Answer:
part a)
Part b)
v = 44.4 m/s
Part c)
Part d)
Explanation:
As we know that the angle at any instant of time is given as
part a)
as we know that rate of change in angle with time is angular speed
so here we have
at t= 5s we will have
Part b)
as we know the relation between linear speed and angular speed is given as
v = 44.4 m/s
Part c)
now in order to find angular acceleration we know that
now tangential acceleration is given as
Part d)
radial acceleration is given as