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Find the rms speed and the average kinetic energy of a hydrogen atom at a temperature of 5.9 multiplied by 107 K. (At this temperature, which is of the order of the temperature in the interior of a star, the hydrogen is ionized and consists of a single proton.
A hollow sphere of inner radius 7.1 cm and outer radius 9.7 cm floats half submerged in a liquid of density 510 kg/m3. Calculate the density of the material of which the sphere is made
A point charge +6.7 uC is placed at the origin, and a second charge -3.6 uC is placed in the X - Y plane at (0.40 m , 0.55 m ). Where should a third charge be placed in the plane
In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, find the magnitude of the impulse on him from the snow
How much work is needed to move it at constant speed.
A projectile is lauched at some speed at an angle of 58 degrees and travels a range of 211 meters. find the maximum vertical displacement for the second angle
A particular wire has a diameter of 1.7 mm and length of 1.3 m. If its resistance is 15 meter-Ohms, what is the resistivity of the metal from which it is made
A series RC circuit with C = 56?F and R = 6.4? has a 25V source in it. With the capacitor initially uncharged, an open switch in the circuit is closed, What is the voltage across the resistor immediately afterward
A small rock with mass 0.12 is fastened to a massless string with length 0.80 to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45 with the vertical. Air resistance is negligible.
A car with its parking brake on starts sliding down an extremely slippery icy h=6 m high embankment into a level snowy muddy field with a coefficient of kinetic friction of 0.8
A small ball is attached to one end of a spring that has an unstrained length of 0.214 m. The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of 2.73 m/s. The spring remains nearly parallel to the gro..
Two point charges -90.0 mC and +40.0 mC, fixed on the x-axis, At what point along x-axis is the electric field zero
when the dried-up seed pod of a scotch broom plant bursts open it shoots out a seed with an initial velocity of 2.68ms
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