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A thin uniform rod (mass = 0.75 kg) swings about an axis that passes through one end of the rod and is perpendicular to the plane of the swing. The rod swings with a period of 2.8 s and an angular amplitude of 4.5°.
(a) What is the length of the rod?
(b) What is the maximum kinetic energy of the rod as it swings?
A projectile is fired in such a way that its horizontal range is equal to 14 times its maximum height. What is the angle of projection
Explain why you think the Petroleum Marketing Practices Act was not passed until 1979 even though gasoline service station franchise arrangements had been in existence for decades before 1979.
Three resistors with values 1.2 , 2.3 , and 5.0 , respectively, are connected in parallel in a circuit with a 5.0 V battery, what is the pwer delivered to the 5 ohm resistor
The A string on a cello vibrates in its first normal mode with a frequency of 220 Hz. Determine the frequency of vibration when the string vibrates in three segments
A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. What is the speed of the helium nucleus after the collision
A baseball approaches home plate at a speed of 48.0 m/s, moving horizontally just before being hit by a bat. The batter hits a pop-up such that after hitting the bat, the baseball is moving at 57.0 m/s straight up. The ball has a mass of 145 g and is..
Two canoes are tied together and traveling down a straight river with the current. Spotting a waterfall, What is the combined mass of this canoe and rider
If friction and air resistance can be neglected, determine her speed vB when she reaches the horizontal end of the ramp at B.
A 50-g block of an unknown material is at 530°C. It is dropped into a thermally insulated cup containing 0.07L of water at 20°C. If the temperature of the compound rises to 50°C, what is the specific heat of the unknown material?
A man wants to swim across a river that flows N to S at 5 m/s.He can swim at a speed of 7m/s. how far south did he travel
An ashtray slides across a table with a speed of 0.6 m/s and falls off the edge. If it takes 0.4 s to reach the floor, how far from the edge of the table does the ashtray land
Jason has a 45-power telescope whose objective lens has a focal length of 120 {\rm cm}. What is the angular magnification of his sister when viewed through the "wrong" end of the telescope
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