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A sample containing sulfur (atomic mass 32 u), manganese (55 u), and an unknown element is placed in a mass spectrometer. The ions all have the same charge and are accelerated through the same potential difference before entering the magnetic field. The sulfur and manganese lines are separated by 3.20 cm on the photographic plate, and the unknown element makes a line between them that is 1.07 cm from the sulfur line.
What is that mass of the unknown element in u?
The surface area of an unclothed person is 1.55 m2, and his skin temperature is 33.0°C. At what rate is energy radiated by the body
questiona 67.0 kg person holds out his arms so that his hands are 1.70 m apart. normally a persons hand makes up about
An electron moving in the positive x direction experiences a magnetic force in the positive z direction. If Bx=0, then what is the direction of the magnetic field? I got the positive y direction, but the answer is the negative y direction, why is ..
Two 12-cm-diameter charged rings face each other, 17.0 apart. Both rings are charged to + 40.0. What is the electric field strength at the midpoint between two rings.
A football player releases a ball with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory at times t = 0.4 sec and t = 1.2 sec, where t = 0 is the time of release from the quarterback's hand.
Michelle is enjoying a picnic across the valley from a cliff. She is playing music on her radio, what is the intensity of the music arriving at the cliff
An RC series circuit has R = 71.0 \Omega and C = 550 nF. The series combination is connected across a 250 V (rms), 64 Hz power supply. Find the impedance of the RC combination
One of Isaac Newton's insights was that the earth's gravity extended well beyond its surface even as far as the moon, How did he know that there was any force at all acting on the moon
What is the value of a current in the smaller loop that would result in zero total magnetic fields at the center of the two loop system.
Calculate kinetic energy of a solid uniform sphere with a radius of 0.145m and a mass of 14.0kg if it is rotating at 6.35rad/s about an axis through its center
a 0.5kg box is sliding with a speed of 6ms on a frictionless level surface toward a spring of force constant k. it hits
q1. a small wooden block with mass 0.900 is suspended from a lower end of a light cord that is 1.50 long. the block is
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