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(a) How many atoms of helium gas fill a spherical balloon of diameter 30.6 cm at 22.0°C and 1.00 atm?
(b) What is the average kinetic energy of the helium atoms?
(c) What is the rms speed of the helium atoms?
An express train passes through a station. It enters with an initial velocity of 22.0 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. How fast is it going when the nose leaves the station
A rectangular metal block is 0.6 m long, 0.2 m wide, and 0.1 m tall. The block weighs 270 N. What is the density of the fluid
A car goes 13 miles east, then due North ending up 25 deg North of East from its initial position. How far due North did it travel
Two point charges 1.9cm apart have an electric potential energy -150?J . The total charge is 30nC
Water at 25 degrees celius is pumped from 100kPa to 5MPa in a pump with an efficiency of 75%, Calulate the temperature rise in the real pump
A ray of light strikes a plane mirror perpendicular to the mirror. What is the angle of reflection
Two small metallic spheres, each of mass m = 0.198 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.4 nC, and they come to equilibrium when each string is ..
Tritium with a half-life of 12.3 years is used to verify the age of expensive brandies. how many years ago was it produced
q1. a cube of ice is taken from the freezer at -8.6degc and placed in a 102 g aluminium calorimeter filled with 286 g
A position vector in the first quadrant has an x component of 8 m and a magnitude of 10 m. What is the value of its y component?
A competitive mini-golf player notices an opponent's ball situated 50cm in front of a wall containing two tunnels. One tunnel leads to the hole, the other to a bunker. The player skill fully putts their ball due East at the opponent's ball with a ..
Five moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 460 to 155 K. Determine the work done by the gas
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