Robo-Billy can do 10 J of work in 10 seconds. Robo-Susie can do 10 J of work in 5 seconds. Determine the amount of time that Robo-Billy and Robo-Susie combined can do 20 J of work. (You may assume, of course, that Robo-Billy and Robo-Susie physically combined into a super robot that exerts power equal to the sum of the powers of the initial bots.)

Does the distance travelled by an oscillating mass between times t=0 and t2 equal the displacement of the particle over the same time period if t2> t/2? hint: consider a sine wave starting at t1=0, then consider a closing wave starting at t1=0, for your explanation.

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving

Aweather forecaster uses doppler radar to predict the track of a storm near the town of meadowlands. when the doppler signal is pointed at the storm from the town's center, the frequencies of the waves appear to be decreasing. what should the weather forecaster predict? a. that the storm will move around the edges of meadowlands without hitting the tosis center o b. that residents should be prepared, because it is impossible to know whether the storm will hit o c. that the storm is moving toward meadowlands and that residents should be prepared d. that the storm is moving away from meadowlands and is not likely to hit the town