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A projectile is fired with an initial velocity of 88m/s at an angel of 42 degrees above horizontal. At the projectile's highest point its velocity is:
a) 58.9 m/s
b) 88m/s
c) 29.1 m/s
d) 0 m/s
e) 65.4 m/s
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a bar of length 2 cm slides along metal rails at a speed of 1 cms. the bar and rails are in a magnectic field of 2 t
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