Makakuha ng mga sagot mula sa komunidad at mga eksperto sa IDNStudy.com. Ang aming komunidad ay nagbibigay ng eksaktong sagot upang matulungan kang maunawaan at malutas ang anumang problema.
10 A stone of mass 0.5kg is dropped from a height of 50m. What is the kinetic energy of the stor just before it strikes the ground? A. O J B. 25 J C. 50 J D. 250 J 11. What is the formula for finding the kinetic energy of an object? A. KE = 1 2 mv2 B. KE = 1 2 (2m) v2 C. KE = V 2 (2x2m)v2 D. KE = 2 ( 2 mv2) 12. Which of the following factors does the speed of sound depend on? A. Density B. Elasticity C. Temperature D. all of the above 13. An echo occurs when a sound wave is A. Absorbed B. Reflected C. Refracted D. transmitted 14. What happens to the speed of sound as the temperature increases? A. Constant B. decreases C. Increases D. cannot be determined 5. Which of the following is true about the effect of air temperature on the speed of sound? A. The lower the temperature the faster the speed. B. The higher the temperature the faster the speed. C. The higher the temperature the slower the speed. D. The temperature does not affect the speed of sound.
Ang iyong presensya ay mahalaga sa amin. Magpatuloy sa pagtatanong at pagbahagi ng iyong nalalaman. Sama-sama tayong magtutulungan upang makamit ang mas mataas na antas ng karunungan. Sa IDNStudy.com, kami ay nangako na magbigay ng pinakamahusay na mga sagot. Salamat at sa muling pagkikita.
