A person can generate about 300 W300 W of power on a treadmill. The treadmill is...
A person can generate about 300 W300 W of power on a treadmill. The treadmill is inclined at 3.00∘3.00∘ and an 80.0-kg80.0-kg man runs at 2.70 m/s2.70 m/s for 41.0 min.41.0 min.
Calculate the percentage of the power output that keeps him moving on the treadmill, ?percentage,moving.
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A person can generate about 300 W300 W of power on a treadmill.
The treadmill is...
(a) Find the useful power output (in W) of an elevator motor that lifts a 2800...
(a) Find the useful power output (in W) of an elevator motor that lifts a 2800 kg load a height of 35.0 m in 12.0 s, if it also increases the speed from rest to 4.00 m/s. Note that the total mass of the counterbalanced system is 10,000 kg-so that only 2800 kg is raised in height, but the full 10,000 kg is accelerated. (b) What does it cost (in cents), if electricity is $0.0900 per kw-h? cents Additional Materials...
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Shoveling snow can be extremely taxing since the arms have such a low efficiency in this...
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An elite Tour de France cyclist can maintain an output power of 470 W during a...
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A constant-density cylinder of mass 0.5 kg and radius 4 cm can rotate freely about an axis through its center. It has thread wound around an attached axle of radius 0.5 cm that also runs through its center (Fig. as shown) The thread is attached to a mass of 1 kg, which slides down an inclined plane of angle ф-300 with an acceleration of 0.1 m/s. a) Draw a free body diagram of the system by PROBLEM 4: (12pts) R....
(a) Find the useful power output (in W) of an elevator motor that lifts a 2800 kg load a height of 35.0 m in 12.0 s, if it also increases the speed from rest to 4.00 m/s. Note that the total mass of the counterbalanced system is 10,000 kg-so that only 2800 kg is raised in height, but the full 10,000 kg is accelerated. (b) What does it cost (in cents), if electricity is $0.0900 per kw-h? cents Additional Materials...
8. What is the power output in kgm/min for a70 kg person and a55 kg personboth walking at 4.5 miles/hr at 12% grade? Be sure to convert mph to m/min, and don't forget to express % grade as a decimal. If one wants to cycle at a work rate of 1470 kgm/min and had 4.5 kg resistance on the cycle: 1) What would the rpm be? -(RPMX4.5 K)m) 14 TORam =akgm/rev(RPM) a7kolrer a rer 140kgm Min w= 1470K9mlmin RPM =...
26. A sodium vapor lamp has a power output of 300 W. If 390 nm is the average wavelength of the source, about how many photons are emitted per secood? (h 1 nm- 10* m) 6.63 x 10Js, c 3.00x 10* m/s, and a. 10 b, 1021 e, 10s d. 10 27. The "seeing" ability or resolution of radiation is determined by its wavelength. If the size of an atom is approximately 10* m, how fast must an electron travel...
A constant-density cylinder of mass 0.5 kg and radius 4 cm can rotate freely about an axis through its center. It has thread wound around an attached axle of radius 0.5 cm that also runs through its center (Fig. as shown) The thread is attached to a mass of 1 kg, which slides down an inclined plane of angle ф-300 with an acceleration of 0.1 m/s. a) Draw a free body diagram of the system by PROBLEM 4: (12pts) R....
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