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Physics Grade 9

1. Dua buah muatan listrik +6q dan +3q mengalami gaya tolak sebesar F saat jarak kedua muatan sejauh r. Jika muatan +3q diganti dengan muatan +4q dan jaraknya dijadikan 2r, gaya yang dialami kedua muatan menjadi…. 2. Benda X bermuatan listrik +q berjarak 10 cm dari benda Y yang bermuatan +2q. Kedua benda tolak-menolak dengan gaya 4N. Jika muatan benda X diperkecil menjadi +1q dan muatan benda Y diperbesar menjadi +4q sedangkan jarak X dengan Y didekatkan menjadi 50 cm, gaya tolak-menolak antara benda X dengan Y menjadi …. Newton       3. Two filament bulbs have the following ratings.             Bulb 1 – 100 V, 80 W             Bulb 2 – 100 V, 100 W Determine the resistance of each bulb and the magnitude of the current that is flowing inside each bulb when they operate under optimal conditions.. Bulb Rating Resistance/R...
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GRADE 8 PHYSICS - FORCES, MASS, WEIGHT, ENERGY, AND POWER

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Answer the following question below correctly with a cross (X) in a box on your answer sheet. 1.     Quantity which has same unit are… a. force and power b. force and weight c. mass and weight d. mass and density 2.     Which object has the largest resultant force? 3.     An object of mass 2 kg is pushed along a horizontal flat surface. The friction force is measured to be 4 N. When the same object is pushed along the same surface with a force of 10 N, it moves with a acceleration….                  a. 2 m/s 2                  b. 3 m/s 2                              c. 4 m/s 2        ...
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