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A 4.80-kg watermelon is dropped from rest from the roof of a 22.0-m -tall building and feels no appreciable air resistance. Just before it strikes the ground, what is the watermelon's speed?
a storage battery of emf 8.0 v and internal resistance 0.5nbspomega is being charged by a 120 v dc supply using a
solar cells can produce about 40 w of electricity per square meter of surface area if directly facing the sun. how
The drawing shows two crates that are connected by a steel (Young's modulus 2.0 x 1011 N/m2) wire that passes over a pulley. determine the change in length of the wire
A standing wave on a string is produced when one end is fixed and the other is driven by a 76 Hz oscillator, what is the total length of the string in meters
A solid cylinder, with a height of 4.00 m, is floating atthe interface between water and oil in an open container that is 16.00 m in height. What is the density of the solid cylinder
a series rlc circuit contains a 125.0 o resistor a 35.0 microf capacitor and a 70.0 mh inductor. the circuit is
A rod of mass 0.720 kg and radius 6.00 cm rests on two parallel rails (see figure below) that are d = 12.0 cm apart and L = 45.0 cm long. what is the speed of the rod as it leaves the rails
Explain any advantages in using Conservation of Energy method to determine initial projectile velocity
You have a pure (24-karat) gold ring with mass 17.0 g, how many protons are in the ring and what is their total positve charge
a horizontal rifle is fired at a bulls -eye. the muzzle speed of the bullet is 670ms the gun is pointed directly at the
a an egg is thrown nearly vertically upward from a point near the cornice of a tall building. it just misses the
In the first stage of a two-stage Carnot engine, energy is absorbed as heat Q1 at temperature T1 = 530 K, What is the efficiency of the engine
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