A rocket train car that is 30 m long is traveling from los angeles to new york at v=0.5c when a light at the center of the car flashes. when the light reaches the front of the car, it immediately rings a bell. light reaching the back of the car immediately sounds a siren. a bicyclist waiting to cross the tracks sees the light in front of her at the instant when it flashes. are the bell and siren simultaneous events for the bicyclist? if not, what time delay does the bicyclist hear between the events?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

(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?

Arrange the images in order to show how lake-effect snow occurs.