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A 7.2kg mass hanging from a spring scale is slowly lowered onto a vertical spring.
A. What does the spring scale read just before the mass touches the lower spring? Express your answer to two significant figures and include the appropriate units.
B. The scale reads 24 N when the lower spring has been compressed by 1.6 cm . What is the value of the spring constant for the lower spring? Express your answer to two significant figures and include the appropriate units.
C. At what compression length will the scale read zero? Express your answer to two significant figures and include the appropriate units.
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A gun shoots bullets that leave the muzzle at 213m/s. If a bullet is to hit a target 160.4m away at the level of the muzzle, the gun must be aimed at a point above target. (Neglect air resistance.)
A singly charged positive ion has a mass of 3.20 multiplied by 10-26 kg. After being accelerated from rest through a potential dissimilarity of 848 V, the ion enters a magnetic field of 0.800 T along a direction perpendicular to the direction of the ..
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A wheel initially has an angular velocity of 18 rad/s. It has a constant angular acceleration of 2.0 rad/s2 and is slowing at first. What time elapses before its angular velocity is18 rad/s in the direction opposite to its initial angular velocity
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Determine the tangential speed of the block when the string is 0.20 m from the axis.
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