A 2.00 kg pendulum bob on a string 2.00 m long, is released with a velocity of 1.50 m/s when the support string makes an angle of 30.0 degrees with the vertical. What is the tangential acceleration of the bob at the highest point of its motion?
A. 5.33 
B. 5.77
C. 6.25
D. 7.00
E. 7.25
B. 5.77
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When does hydrogen first begin to fuse into helium in the star formation process?
A) when the cloud first begins to contract B) when the thermal pressure is trapped at the center of the cloud C) when the protostars undergoes convective contraction D) when the protostar undergoes radiative contraction E) only when the star reaches the main-sequence
Which major atmospheric component is chiefly a product of life processes?
A) Carbon dioxide B) Water C) Oxygen D) Hydrogen sulfide E) Nitrogen
An 8 kg object moving with an initial velocity of 4 m/s comes to rest due to friction after it travels a horizontal distance of 10 m. If the initial speed of the object is doubled, what distance will it travel before coming to rest? Use g = 10 m/s2
A) 10 m B) 20 m C) 30 m D) 40 m E) 80 m
CH3CH2OH is the structural formula for the compound named ______________
Fill in the blank(s) with correct word