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A weightless spring of force constant 2.50N/cm is 15.0 cm long whennothing is attached to it. It is now used to pull horizontally on a12.5 kg box on a smooth horizontal floor. You observe that the boxstarts from rest and moves 96.0 cm during the first 1.60 s of itsmotion. How long is the spring during this motion?
A lighted candle is placed 36 cm in front of a diverging lens. The light passes through the diverging lens and on to a converging lens of focal length 10 cm that is 5 cm from the diverging lens. Find the focal length of the diverging lens
for a certain transverse wave the distance between two successive crests is 1.20 m and eight crests pass a given point
What volume of water at 0°C can a freezer make into ice cubes in 1.4 hours, if the coefficient of performance of the cooling unit is 8.0 and the power input is 1 kilowatt.
Dan is gliding on his skateboard at 4. He suddenly jumps backward off the skateboard, kicking skateboard forward at 8.00 (as measured by an observer on the ground). Dan's mass is 60 and skateboard's mass is 5.00 .How fast is Dan going as his fee..
Which statement is true concerning the magnitude of the net force on the plane.
excess electrons are placed on a small lead sphere with a mass of 8.35 so that its net charge is -3.65times10-9 .find
A 4.00*102 g glass coffee cup is 20.0 C at roomtemperature. It is then plunged into hot dishwater at a temperatureof 80.0 C. If the temperature of the cup reaches that of thedishwater, how much heat does the cup absorb?
An electron passes through a point 3.27 cm from a long straight wire as it moves at 37.3% of the speed of light, Find the magnitude of the electron\'s acceleration at that point
A radioactive nucleus decays spontaneously by the emission of an electron and neutrino. what is the momentum of the residual nucleus
Water moves through a constricted pipe in steady, ideal flow. At the lower point the pressure is 1.65 105 Pa and the pipe radius is 2.60 cm. Find the volume flow rate through the pipe
In a section of horizontal pipe with a diameter of 3.00 cm the pressure is 5.21 kPa and water is flowing with a speed of 1.50 m/s. What is the pressure in the narrower region
A woman walks 305 m in the direction 58° east of north, then 164 m directly east. Find the distance she walks
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