2) fluorine (f), boron (b), and lithium (li) are all in the same period, but are in different groups,
higher electronegativity than boron, which has a higher electronegativity than lithium (f = 398,
0.98. however, boron has a higher melting point than both fluorine and thum, and thym's
m
higher than that of fluorine (f = -220°c, b = 2300°c, - 180°c)
200,-
po
e
using your knowledge of periodic trends and the information above, describe the nature of the period
trends for electronegativity and melting point

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? your