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calculate the doppler shift of x rays emitted from shocked silicon in a supernova remnant of the ejected material is
calculate the average density of a red giant star in grams per cubic centimeter take the stars mass to be 21033 gm and
a uniform magnetic field b is perpendicular to the plane of a circular loop of radius r the magnitude of the field
two stars in a binary system orbit around their center of mass the centers of the two stars are 730 x 1011 m apart the
the mass of a neutron is about 17x1027 kg suppose the mass of a neutron star is about 341030 kg how many neutrons does
an electron is fired with speed 2400 ms into a region of uniform electric field with magnitude 8 nc assuming the
in a football game a receiver is standing still having just caught a pass before he can move a tackler running at a
a 100 o resistor 100 mh inductor and a 1100 microf capacitor are connected in series with a 500 v rms source having
an electron in chromium moves from the n 2 state to the n 1 state without emitting a photon instead the excess energy
find the diameter of the eye structure that causes a circular diffraction pattern with the first dark ring at an angle
a 625 skier is moving at 600 on a frictionless horizontal snow-covered plateau when she encounters a rough patch 310
a 41-m-tall 30-cm-diameter concrete column supports a 20times105kg load by how much is the column
a three-legged wooden bar stool made out of solid douglas fir has legs that are 25cm in diameterwhen a 65 man sits on
a 02kg steel ball is dropped straight down onto a hard horizontal floor and bounces straight up the balls speed just
in a physics demonstration a stationary mass m1 020kg slides down a frictionless ramp and then collides with a second
a guitar string is 93 cm long and has a mass of 36 g the distance from the bridge to the support post is l 60 cm and
a horizontal circular platform rotates counterclockwise about its axis at the rate of 0947 rads you with a mass of 741
when a converging lens is used in a camera as in the first drawing the film must be placed at a distance of 0240 m from
two rivers a and b flow together to form a larger river c if the flux volume rate of flow of river a is 300 gallons per
the far point of a nearsighted person is 84 m from her eyes and she wears contacts that enable her to see distant
the body contains many small currents caused by the motion of ions in the organs and cells measurements of the magnetic
a hollow sphere of radius r has a potential on its surface specified by the function vrtheta vocos2thetafind the
an alpha particle a he nucleus containing two protons and two neutrons and having a mass of 648times10-27 kg traveling
a 200 kg wagon is being pulled over a level driveway by a horizontally directed pulling force of 140 n if there is a
consider two identical particles of spin 12 that are confined in a cubical box of side l find the energy and wave