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the official record for the lowest temperature ever recorded on earth was set at vostok antarctica on july 21 1983 the
light of wavelength 380 nm is incident on the face of a silica prism at an angle of 1 642 with respect to the normal
a a large asteroid of mass 71700 kg is at rest far away from any planets or stars a much smaller asteroid of mass 930
an electrical engineer constructs a cylindrical solenoid of area 6 cm2 and length 20 cm from 160 m of thin wire the
a 20 x microscope objective is designed for use in a microscope with a 17 cm tube length the objective is marked na
the springs of a 1600 kg car compress 50 mm when its 70 kg driver gets into the drivers seat if the car goes over a
a converging lens f1 240 cm is located 560 cm to the left of a diverging lens f2 -280 cm an object is placed to the
a parallel-plate air capacitor has a capacitance of 300 rm pf and a charge of magnitude 0250 mu rm c on each plate the
a heat engine utilizes a heat source at 580 degrees celsius and has an ideal carnot efficiency of 28 to increase the
a 94 resistor and a 63 resistor are connected in series with a power supplya the voltage drop across the 63 resistor is
the charge flowing through a light bulb attached to a 120-v battery in 140 s is 300 c what is the average power
if the ball rebounds with the same speed and angle what was the magnitude of the impulse delivered to it by the
a jet transport has a weight of 100 106 n and is at rest on the runway the two rear wheels are 156 m behind the front
how far from the lens should an object be placed so that its virtual image is at the near-point distance of 25 if the
a large electromagnet has a 23 t magnetic field between its poles what is the magnetic energy density between the
the owner of a van installs a rear-window lens that has a focal length of -0300 m when the owner looks out through the
a wheel of radius 15m rotates at a constant angular velocity a point at the edge of the wheel experiences centripetal
a truck can move up a road having a grade of 10-ft rise every 50-ft with a speed of 15 mih the resisting force is equal
a square wire 20 cm on each side is oriented so that 500 mt magnetic field makes a 30 degree angle with the normal to
a beam of protons moves in a circle of radius 034 m the protons move perpendicular to a 029-t magnetic fielda what is
a body is suspended vertically from an ideal spring of spring constant 34 nm the spring is initially in its relaxed
a solid ball encounters a 0760 m vertical rise on the way back to the ball rack ignore frictional losses and assume
determine the anchoring forces rx and ry required to hold in place a conical nozzle at the end of hose when the water
an object 075 cm tall is placed 120 cm to the left of a diverging lens f -800 cm a converging lens is placed 800 cm to
a 350-kg child swings in a swing supported by two chains each 292 m long the tension in each chain at the lowest point