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never [62]
3 years ago
11

Help now WILL MARK BRAINLEST

Physics
1 answer:
Dmitry_Shevchenko [17]3 years ago
3 0

Answer:

point a and c

Explanation:

point a and c

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The si base unit for length is the
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In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression x= 5.0 cos
lakkis [162]

Answer:

a)   x = 4.33 m ,   b)  w = 2 rad / s ,  f = 0.318 Hz ,  c) a = - 17.31 cm / s²,  

d) T =  3.15 s,  e)  A = 5.0 cm

Explanation:

In this exercise on simple harmonic motion we are given the expression for motion

          x = 5 cos (2t + π / 6)

they ask us for t = 0

a) the position of the particle

      x = 5 cos (π / 6)

      x = 4.33 m

remember angles are in radians

 

b) The general form of the equation is

          x = A cos (w t + Ф)

when comparing the two equations

         w = 2 rad / s

angular velocity and frequency are related

          w = 2π f

           f = w / 2π

           f = 2 / 2pi

           f = 0.318 Hz

c) the acceleration is defined by

      a == d²x / dt²

      a = - A w² cos (wt + Ф)

for t = 0 ,  we substitute

      a = - 5,0 2² cos (π / 6)

      a = - 17.31 cm / s²

d) El period is

          T = 1/f

         T= 1/0.318

         T =  3.15 s

e) the amplitude

        A = 5.0 cm

3 0
3 years ago
6) If Bam was hit by the hand with a force of 1200N. If he has a mass of 81kg, what acceleration did
bazaltina [42]

Answer:

14.81 m/s^2

Explanation:

f=m×a

1200=81×a

a=1200/81

a=14.81

3 0
2 years ago
What is the z coordinate for the above vector?
Hitman42 [59]
120 m would be he answer
4 0
3 years ago
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