A block is pulled across a rough surface by a tension force 15 degrees above the horizontal. The surface exerts a force of friction of -12 N on the block. What is the force of tension needed to move the block at a constant speed? Round your answer to two decimal places
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Physics, 21.06.2019 20:30
Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)
Answers: 2
Physics, 22.06.2019 10:30
Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?
Answers: 2
Physics, 22.06.2019 14:30
When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell
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Physics, 22.06.2019 17:30
Current from a charged capacitor lights a bulb. as time goes on the brightness of the
Answers: 3
A block is pulled across a rough surface by a tension force 15 degrees above the horizontal. The sur...
English, 21.11.2019 07:31
Mathematics, 21.11.2019 07:31
Mathematics, 21.11.2019 07:31
Mathematics, 21.11.2019 07:31
Mathematics, 21.11.2019 07:31
Mathematics, 21.11.2019 07:31
Mathematics, 21.11.2019 07:31
Mathematics, 21.11.2019 07:31