A2 000-kg pile driver is used to drive a steel i-beam into the ground. the pile driver falls 3.60 m before coming into contact with the top of the beam, and it drives the beam 14.0 cm farther into the ground before coming to rest. using energy considerations, calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest. magnitude n direction

step-by-step explanation:

angle addition postulate

2x=56

step-by-step explanation:

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.

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