The position of a 50 g oscillating mass is given by x(t)=(2.0cm)cos(10t−π/4), where t is in s. If necessary, round your answers to three significant figures. Determine:

a) amplitude cm

b) the period s

c) the spring constant N/m

d) the phase constant rad

e) the initial coordinate of the mass cm

f) the initial velocity cm/s

g) the maximum speed cm/s

h) the total energy mJ

i) the velocity at t=0.40 s cm/s

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

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explanation:

talk back to him about the sport and show him your expertise or leave the room

at right angles to each other