- Word Problems: Remember to use GRASP and show string number before stating final answer. 1) Abobon the end of a spring is pulled down and released. If the bob moves up and down 12 times in 3.6 seconds, determine the period and frequency of the oscillation [Ans: 0.30s;3.3Hz] 2) A piston in a car moves up a down 150 times per minute (150 rpm)Find the frequency in Hz and the period of the vibration. [Ans: 2.5Hz;0.40s] 3) The frequency of a note produced by a tuning fork is 440 Hz. Find the wavelength of the sound given a sound speed of (a) 332m/s (b) 344m/s. [Ans: 0.755 m 0.782 m] 4) The frequency of another tuning fork is 512 Hz. If the wavelength of the vibration is 66.4 cm, find the speed of sound (Ans: 3.40times 10^2m/s) 5) Determine the speed of a wave with a frequency of 1025 MHz and a wavelength of 2.9 m (Ans: 3.0times 10^8m/s]
- The energy needed to melt 350 g of ice which is at 0.0^circ C is __ kJ.
- 24. At what distance above this computer screen would a convex magnifying lens that has a focal length of 10.0 cm have to be held for the image of the letters to appear upright and 3 times as tall? A. 3.33 cm B. 6.67 cm C. 13.3cm D. 15.0 cm
- HOW IS ENERGY DISSI SPATED FROM A MECHAN ICAL L S STE M?
- Multiple Choice 1 point A1kg car is on a track 020 meters above the ground. Solve the problem: PE_(g)=? 4.9J 1.96J 19.6 J 0.49 J
