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A thin uniform rod (length = 10.0 cm, mass = 250 g) is pivoted about a horizontal frictionless pin through one end of the rod. The moment of inertia of the rod through this axis is (1/3) mL2. The rod is placed at 20 degrees below the horizontal and then it is released. What is the angular acceleration of the rod at the instant it is released? (Be careful about the correct angle to use for the torque!) a) 6.25 rad/s2 b) 19.7 rad/s2 c) 1.13 rad/s2 d) 14.1 rad/s2
A circular coil (500 turns, radius=.195m) is rotating in a uniform magnetic field. At t=0 s. Find the magnitude of the magnetic field at the location of the coil
imagine that you want to shoot an apple hanging in a branch with an arrow. you aim the arrow and at the exact time you
If 0.040kg of ice at 0 C is added to 0.390kg of water at 30 C in a 0.130-kg aluminum calorimeter cup
In a court hearing, a physicist reconstructs an accident in the following way. A sports car of mass m1=1000kg collided with a parked truck of mass m2=1500kg. Determine the speed of the sports car immediately after the collision
Electrons are accelerated by a potential and directed upon a thin salt crystal that has inter-atomic spacing of 0.282 cm. What was the acceleration potential
A sample containing sulfur (atomic mass 32 u), manganese (55 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
Two people push a stalled car at its front doors, each applying a 250n force at 25 degree to the forward direction. How much work does each person do pushing the car 5.4 m?
q1. a 1040 kg car carrying four 80 kg people travels over a rough washboard dirt road with corrugations 2.0 m apart
a charged particle (q=1.6*10^-19C) enters a mass spectrometer with a speed of 2.5*10^6m/s, compute the mass of the charged particle
Determine the theoretical equation for the dependence of Period of the Physical Pendulum to location of the pivot point for a solid bar of length L. This will be T(x) - Period as a function of pivot point position. Mathematically determine minima ..
a 500 g ball swings in a vertical circle at the end of a 1.5-m-long string. When the ball is at the bottom of the circle the tension in the string is 15 N. What is the speed of the ball at that point?
Find the power delivered by the good battery, and discuss where this power goes, assuming that the emf's and resistances of each battery remain the same throughout the process
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