Aman walke towards the bus stop 100 meters away at a constant velocity. he reaches the bus stop in 200 seconds. once at the bus stop, he sits for 500 seconds waiting for the bus. he then realizes he forgot something and runs home at a speed of 2.0 meters/second.

what is the velocity, displacement, and the time?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Where do magnetic lines of force enter earth?