A machine does 6 times 10 quartic joules of work in two minutes. What's the power of this machine?

It has more formula P = w / s, 60000j △ 120s = 500W

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1. The specific heat capacity of water is 4.2 times 10 cubic Joule, the density is 1.0 times 10 cubic kilogram per cubic meter, g = 10N per kilogram, the frequency is 50 Hz, the heating power is 1200W, the capacity is 1.2L. 1. The efficiency of self-priming pump is 60%. 2. The time of heating 1.2L water from 20 ℃ to 100 ℃ is 6 minutes,
2. Newton's car with a weight of 10 moves in a straight line at a constant speed on the road Then, its resistance is 0.03 times of the vehicle weight. What is the traction force of the engine
3. Can a truck with a total weight of 5 times 10 to the fourth power Newton pass the bridge with a load limit of 4 tons? Two methods are used to calculate
4. There is a sign with 4T at the side of a highway bridge, which is used to indicate the restrictions on vehicles crossing the bridge. There is a vehicle with a total weight of five times ten to the fourth power Truck, can this car pass through this bridge
5. A ship's deadweight is 2.5 × 10 Newton of the seventh power. When it sails in the Yangtze River, the mass of its boiled water is 6 × 10 Newton of the sixth power What's the weight of the cargo?
6. Given a + B + C = 0, find the cubic power of a + the square of a times the square of C + B times the cubic power of c-abc + B
7. If the exponent is odd, multiply the power by X; if the exponent is even, divide its exponent by 2, and so on The answer should be more detailed If the exponent is odd, multiply the power by X; if the exponent is even, divide its exponent by 2, and so on. After which operation, the index is 4? What is the exponent of X after the 14th operation? Keep going. What do you find?
8. Operate the ninth power of a (a > 0) according to the following requirements: if the index is odd, multiply by a; if the index is even, divide its index by 2. If this continues, how many times is the index of a 4? What is the result of a after the 100th operation?
9. If the exponent is odd, multiply the power by X; if the exponent is even, divide its exponent by 2, and so on Go, what's the index of X after the 14th operation? What do you find when you continue to operate?
10. When n is______ When (a-b) n = (B-A) n; when n is______ When (a-b) n = - (B-A) n. (where n is a positive integer)
11. At a standard atmospheric pressure, a kilogram of 20 ℃ water absorbs 3,78 times 10 of 7 joules of heat. Its temperature? The answer is 100. Why do I think it is 110?
12. Under the standard atmospheric pressure, the temperature is 40 ℃, the mass of 2kg water absorbs the heat of 5.46 times 10 to the fifth power Joule, how much does the water temperature increase? C water = 4.2 times 10 to the third power Joule / (kg ℃)
13. Under the standard atmospheric pressure, let 3kg 90 ℃ water absorb 1.5 times 10 of the fifth power Joule heat, how much has the water temperature increased?
14. What's the temperature of water with a mass of 2kg and a temperature of 15 ℃ after absorbing the heat of 1.68 times the quintic joule of 10
15. Under standard atmospheric pressure, how much does the temperature rise after 1 kg of 26 ℃ water absorbs 3.36 * 10 joules of heat to the sixth power
16. How much heat can a 48.4 resistance electric heater generate per minute when connected to the lighting circuit
17. When an electric heater is connected to the lighting circuit, the heat generated per minute is 3.3 * 10 to the fourth power J. how to calculate the current passing through the electric heater?
18. An electric heater, when the current passing through it is 2 A, produces 2.64 × 10 power heat per minute, Find out the electric power of the electric heater and its working resistance
19. As shown in the figure, in △ ABC, M is the midpoint of BC, AP is the bisector of ∠ a, BP ⊥ AP is p, ab = 12, AC = 22, then MP length is () A. 3B. 4C. 5D. 6
20. It is known that in △ ABC, M is the midpoint of BC side, AP is the bisector of ∠ a, BP ⊥ AP is at P, ab = 12, AC = 22, find the length of MP