A 3-kg hammer is on a 30-m high beam at a construction site. If the hammer is accidentally knocked off the beam, how fast (m/s) will it go just before it strikes the ground. Ignore air resistance. Use g= 10m/s^2. ROUND YOUR ANSWER TO 1 DECIMAL

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

You can decrease the resistance of a length of wire by

You add 800 ml of water at 20c to 800 ml of water at 80c what is the most likely final temperature of the mixture ? a. 100c b. 60c c. 25 c d.50c