9. A 1385-kg pickup truck hitched to a 453-kg trailer accelerates along a level road from a
stoplight at 0.75 m/s2 [forward]. Ignore friction
on the trailer and air resistance. Calculate
(a) the tension in the hitch a
(b) the force of static friction exerted by the road
on the pickup truck to propel it forward a
(c) the force the trailer exerts on the pickup
truck a

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Macy always thought there were only a few hair colors blonde brown and black however when she actually began looking around she saw varying shades of these hair color what is a possible reason for so many different hair colors

Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). what’s the chemical formula of this substance?