Speed=distance/time, rearranging gives speed*time=distance therefore the first section of the journey yielded a total distance of 40km, the second journey was stated to be 20km which was completed in (20/30)*60=40minutes. Therefore the total journey was 60km which was completed in 1hr40 minutes so the average speed was (60/1.66..)=36km/h.
Answer:
elements are the same columns are similar in there property
Explanation:
Work = force × distance × cos(angle)
work = (25)(50)(cos (40))
work = 957.56 Joules
= 9.6x10^2 Joules
Answer:
B. does it transfer energy
A wave is a disturbance in a medium. Particles vibrate and TRANSFER their ENERGY to their neighbors.
Field strength = (15 V) / (4 cm)
Field strength = (15 V) / (0.04 meter)
Field strength = (15/0.04) (volts/meter)
<em>Field strength = 375 volts/meter </em>
