Question

In: Physics

Suppose a 1.45 × 105-kg airplane has engines that produce 120 MW of power. Part (a)...

Suppose a 1.45 × 105-kg airplane has engines that produce 120 MW of power.

Part (a) How many seconds would it take the airplane to reach a speed of 225 m/s and an altitude of 14.5 km, if air resistance were negligible?

Part (b) How much power did the plane use, in megawatts, if this process actually took 975 s?

Part (c) Using the power consumption from part (b), what would be the magnitude of the average force, in newtons, of the air resistance if the airplane took 1300 s and traveled in a straight line at a constant acceleration to the specified altitude?

Solutions

Expert Solution

genius_generous answered 2 years ago
Next > < Previous

Related Solutions

(a) How long (in s) would it take a 1.00 ✕ 105 kg airplane with engines...
(a) How long (in s) would it take a 1.00 ✕ 105 kg airplane with engines that produce of 100 MW of power to reach a speed of 200 m/s and an altitude of 12.0 km if air resistance were negligible? _? s (b) If it actually takes 950 s, what is the power applied, in megawatts? _? MW (c) Given this power, what is the average force (in kN) of air resistance if the airplane takes 1200 s? (Hint:...
(a) How long (in s) would it take a 1.00 ✕ 105 kg airplane with engines...
(a) How long (in s) would it take a 1.00 ✕ 105 kg airplane with engines that produce of 100 MW of power to reach a speed of 200 m/s and an altitude of 12.0 km if air resistance were negligible? _? s (b) If it actually takes 950 s, what is the power applied, in megawatts? _? MW (c)Given this power, what is the average force (in kN) of air resistance if the airplane takes 1200 s? (Hint: You...
a. How long (in s) would it take a 1.50 ✕ 105 kg airplane with engines...
a. How long (in s) would it take a 1.50 ✕ 105 kg airplane with engines that produce of 100 MW of power to reach a speed of 300 m/s and an altitude of 12.0 km if air resistance were negligible? b. If it actually takes 850 s, what is the power applied, in megawatts? c. Given this power, what is the average force (in kN) of air resistance if the airplane takes 1200 s? (Hint: You must find the...
1.45 kg    of ice at   -5 ∘C    is dropped into   31 kg    of water at temperature   15.3 ∘C   . Part...
1.45 kg    of ice at   -5 ∘C    is dropped into   31 kg    of water at temperature   15.3 ∘C   . Part A - Final Temperature What is the final temperature of the system? (If I've set the problem up right, you should be given numbers such that all of the ice has melted.)   Tf   =    ∘C    Part B - Entropy of Warming Ice What is the change in entropy of the ice, as it warms up before melting? S = J/K Part C - Entropy...
A freight train consists of two 8.00 x 105 kg engines and 45 cars with average...
A freight train consists of two 8.00 x 105 kg engines and 45 cars with average masses of 5.50 x 105 kg. (a) Assuming the force of friction is 7.50 x 105 N, calculate the force each engine must exert to accelerate the train at 5.00 x 10-2 m/s2. (b) What is the magnitude of the force in the link coupling the 10th and 11th train cars?
A 1000 kg car has a maximum power output of 120 hp. How steep a hill...
A 1000 kg car has a maximum power output of 120 hp. How steep a hill can it climb at a constant speed of 74 km/h if the frictional forces add up to 600 N?
A 1000- MW power plant burns coalwith a heating value of 25000Btu/kg, a sulfur content of...
A 1000- MW power plant burns coalwith a heating value of 25000Btu/kg, a sulfur content of 2.1%, and an ash content of 8%. The plant has an overall conversion efficiency of 30%. Calculate: a. The coal consumption rate in tons/hour. b. The ash generation rate in tons/hour. c. If a wet scrubber is added to remove 98% of the SO2, find the CaO consumption rate, also in tons/hour. 1W = 3.411Btu/hr 1hp = 746W = 2545 Btu/hr Molecular weights: S...
The following heat engines produce power of 95,000 kW. Determine in each case the rates at...
The following heat engines produce power of 95,000 kW. Determine in each case the rates at which heat is absorbed from the hot reservoir and discarded to the cold reservoir. a. A carnot engine operates between heat reservoir at 750K and 300K. b. A practical engine operates between the same heat reservoirs but with a thermal efficiency n = 0.35 *Please show are the formulas and steps how to do this problem please.
A pointer laser has an average output power of 0.9 mW and a beam diameter of...
A pointer laser has an average output power of 0.9 mW and a beam diameter of 1.2 mm. (a) What is the force exerted by the laser beam on a perfectly reflecting surface ? (b) Is this force much larger, smaller, or about the same compared to the weight of a 0.1 gram drop of water ( 1x10-4x9.8 = 9.8x10-4 Newton ) (c) What is the rms electric field produced by this laser ?
A combined gas turbine–vapor power plant has a net power output of 200 MW. Air enters...
A combined gas turbine–vapor power plant has a net power output of 200 MW. Air enters the compressor of the gas turbine at 300 kPa, 1200 K, and is compressed to 1000 kPa. The pressure ratio of the gas turbine cycle is 11. Steam leaving the turbine of the vapor power cycle are used to heat the steam at 6 MPa to 350C in a heat exchanger. The combustion gases leave the heat exchanger at 420 K. An open feedwater...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT