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an ideal gas has a pressure of 2.5, a volume of 1.0L at a temperature of 30degress C. How many molecules are there in the gas?
A very powerful vacuum cleaner has a hose 2.61 cm in diameter. With no nozzle on the hose, what is the weight of the heaviest brick that the cleaner can lift
A bowling ball encounters a 0.760m vertical rise on the way back to the ball rack, as the drawing illustrates. find the gain in potential energy at the top
A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 99 m/s. Find the maximum altitude reached by the rocket
A square loop of Cu wire 4.00cm on an edge is lying on a horizontal table. An electromagnet above the square loop is turned on to produce a magnetic field. what is the power loos in the loop
A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At a distance of 5.00 km from the source, What is the average power radiated by the source
A useful model of a water molecule is sketched in the figure below, with point charges of 5.2 10-20 C at the H sites, What is the total electric potential energy of this model of a water molecule
If the airplane somehow continues to fly as if nothing had happened, where is engine relative to the airplane at the moment the engine hits ground.
A high-speed drill reaches 2000 rpm in 0.50 s. What is the drill's angular acceleration? Through how many revolutions does it turn during this first 0.50s.
A 150g ball and a 250g ball are connected by a 34cm long, massless, rigid rod. The balls rotate about their center of mass at 130 . what is the speed of ball of 150 g.
A hypothetical neutral atom has 93 electrons and a nucleus of mass m = 2.23e-25 kg. Calculate the speed of orbit of this electron
our little sister builds 2 tree houses and stretches a rope between them for sending messages to other tree house. She hangs a mass of 1.4kg on one end of the rope that passes over the pulley.
A 2.8{\rm kg} block of wood sits on a table. A 3.0 {\rm g} bullet, fired horizontally at a speed of 370{\rm m/s} , What is the speed of the block immediately after the bullet exits
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