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

Physics make-up packetname_cle14. an observer hears a sound with a frequency of 400 hz. if the speed of sound is 340 m/s,what is the wavelength of the sound? a. 0.85 mb. 1.2 mc. 2.75 m13.6 m15. as sound travels from steel into air, its speed decreases. if the frequency of the wavedoesn't change, what happens to its wavelength? a. it increases(b) it decreasesc. it remains the samed. there is not enough information given

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s