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- If you slide down a rope, it's possible to create enough thermal energy to burn your hands or your legs where they grip the rope. Suppose a 40 kg child slides down a rope at a playground, descending 1.5 m at a constant speed. 鬼5If you expended 1500 watts for 3 hours, how many kilowatt-hours (kWh) would that be? Enter answer as number followed by a space and then the correct units (i.e "123 Unit").Answer the following question throughly
- C Clever | Teacher Pa A tst0331 - Positivep x P Positive Physics - PI X O Complete Problems X P Positive Physics - PI X P Positive Physics - PI X b My Questions | bar x + A positivephysics.org/positiveskill?skillID=99&unitID=30&type=assessment positivephysics PREMIUM dashboard hadiaiman Score: 77% 4 6. 8 The system shown is released from rest. After release, the 6kg block moves upwards with an acceleration of 3.3m/s?. Neglect drag, friction and the mass of the string and pulley. Create an equation in terms of m, then solve. What is the tension in the string? unit What is the unknown mass? unit 6kg 1:27 PM .ll ) O 3/31/20211) You run forward, pulling a sled behind you with a force of 250 N. If you expend 2,500 Joules, how many meters did you run? Answer w/9. In the figure, R₁ = 3 kn = R₂. If the power dissipated in R₁ and R2 are 90 mW and 10 mW, respectively, how much power is dissipated in R3? (1) 45 mW (2) 10 mW 3) 30 mW 4) 90 mW 20 mW R₁ E www R₂ R3
- r(cm) P(mW) 2.2 D-9 15 O. 4 20 0.3 25 3- Plot agraph between power and distance. h between16. How much energy is dissipated in braking a 1200-kg car to a stop from an initial speed of 30 m/s? A) 24 000 J B) 280 000 J C) 540 000 J D) 820 000 J E) 12 000 JA 50kg man travels to the moon. When he climbs 5m up a ladder into his lunar base, he gains 400J of GPE. What is the gravity on the moon?
- 1. A certain power plant produces useful work (i.e. electricity) at a rate of 900 MW (remember, that's 900 x 106 joules/sec). How many joules of electricity does this power plant produce in 24 hours?A typical desktop personal computer uses around 100 W of power when carrying out intensive processing, such as running a video game. If you play such a game for 90 minutes, how much energy (in joules) will it use?