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A spring (k = 200 N/m) is suspended by its upper end supported from a ceiling. With the spring hanging in its equilibrium configuration, an object (mass = 2.0 kg) is attached to the lower end and released from rest. What is the speed of the object after it has fallen 4.0 cm?
Having taken a nap under a tree only 20 m from the finish line, Rabbit wakes up to find Turtle 19.5 m beyond him, grinding along at 1/4 m/s. If the bewildered hare can accelerate at 8 m/s2 up to his top speed of 17 m/s (38 mi/h) and sustain that s..
a sample of blood is placed in a centrifuge of radius 13.0 cm. the mass of a red blood cell is 3.0 multiplied by 10-16
A roughly spherical volume of rock 2.1 km in radius is 30% denser than the surrounding rock, calculate the gravitational acceleration it produces at Earth's surface
Does the rod (with the attached ball of clay) rotate?
a 60.0-g object is attached to a horizontal spring with a force constant of 5.0 nm and released from rest with an
A copper bowl of mass m1 contains a mass m2 of water, both at temperature T (which is below the boiling point of water). How much energy is transferred to the water as heat
what was the initial speed given to the rock. A light plane is headed due south with the speed of 154 km/h relative to still air. After 1.06 hour, the pilot notices that they have covered only 127km and their direction is not south but southeast (4..
The car that hits a concrete barrier and takes 0.3 seconds to stop.
For the third circuit, consisting of a single battery and two light bulbs in parallel, what is the total resistance of the circuit if each light bulb has a resistance of 7.7 ohms? What is the current through each bulb
the three capacitors c3.010-6 f in series are connected across a 30-v battery.a find the charge on each capacitorb find
The electric field of a sinusoidal electromagnetic wave obeys the equation E=(375V/m)cos[(1.99×107rad/m)x+(5.97×1015rad/s)t]. What is the amplitude of the magnetic field of this wave
A positive charge of Q = 5.40 uC is fixed in place. From a distance of ri = 4.20 cm a particle of mass m = 5.50 g, What is the minumum distance rf between the two charges
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