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In intergalactic space, there is an average of one hydrogenmolecule per cm^3 and the temperature is 3K. Calculate the averagepressure.
a black of mass m sliding on a frictionless table is attached to a horizontal string that passes through a tiny hole in
a man is trying to get his car out of mud on the shoulder of a road. He ties one end of a rope tightly around the front bumper , What is the magnitude of the force on the car from the rope
A 0.650 MeV x-ray is Compton scattered at 90° by a free electron in an aluminum foil. a) What is the wavelength of the incident photon? b) What is the wavelength of the scattered photon? c) What is the energy of the recoiling electron?
Two sound speakers separated by a distance of 3-meters, are driven in phase by same audio amplifier. A listener sits directly in front of one speaker at a distance of 4 meters from it so that listener and speakers form a right triangle.
a 11.2 cm-diameter circular loop of wire is placed with its face parallel to the uniform magnetic field between the
Find out the magnitude and direction of the electric field at a distance.
The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 299 K. Determine the temperature of the well water
a certain light bulb is rated at 60 w when operating at the rms voltage of 120 va. what is the peak voltage applied
Two stars located 22 light-years from Earth are barely resolved using a reflecting telescope having a mirror of diameter 66 cm. find the separation between the stars
A mass (10 kg) rests on a surface (ustatic=0.6) connected by a cord to a hanging mass of 2 kg. What is the acceleration of the heavier mass
a proton and a alpha particle are released from rest when they are 0.225 mm apart. the alpha particle a helium nucleus
Monochromatic light falls on two very narrow slits0.042mm apart. Successive fringes on a screen6.50m away are 8.4cm apart near the center of the pattern. Determine the frequency of the light.
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