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A particular heat engine has a useful power output of 4.80 kW and an efficiency of 25.0%. In each cycle, the engine expels 8250 J of exhaust energy.
(a) Find the energy taken in during each cycle.
.......... kJ
(b) Find the time interval for each cycle.
..........s
If a toaster is plugged into a source of alternating voltage with an rms value of 66.2 V, find the resistance of the toaster's heating element
During an earthquake, the floor of an apartment building is measured to oscillate in approximately simple harmonic motion with a period of 1.60 seconds and an amplitude of 9.00cm, Determine the maximum speed of the floor during this motion
It takes the elevator in a skyscraper 4.1s to reach its cruising speed of 13m/s. A 68kg passenger gets aboard on the ground floor. find the passenger's weight before the elevator starts moving
Ultrasound intensity level: Beta = 10Log (I2/I1), I1 and I2 = intensity at different locations/times An ultra sound signal is sent under sea water (v=1530m/s) to detect the location of an object. Determine the location of the object from the source
A spaceship is approaching a space station at a speed of 2.55 multiply.gif 105 m/s. What is the frequency of the beacon observed on the spaceship
A -49nC charge is distributed uniformly along the x-axis from x= -1.2m to x= 4m. Consider a point at y= 1.9m on the y-axis, What is the total magnitude of the electric field at the point
The wavelength of visible light ranges from 400 {\rm nm} to 700 {\rm nm}. Find the ranges of this light's angular frequency
A 300 g oscillator has a speed of 95.4 cm/s when itsdisplacement is 3.0 cm, What is the oscillator's maximum speed
A whale sends an undersea signal to its mate and then gets a response 4.5 seconds later. How far away is the whales mate
Discuss displacement versus distance moved for an object and illustrate with examples. Define Inertia and explain its consequences on motion
An oscillator vibrating at 1220Hz produces a sound wave that travels through an ideal gas at 325 m/s when the gas temperature is 22.0 ?C. What should the gas temperature be to achieve this wavelength
As a small aircraft approaches a landing strip, it is flying along horizontally at constant (low) altitude, What is the weight of the plane? Air density = 1.29 kg m-3
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