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A heat engine has a useful work output of 4.0 kJ and expels 8.0 kJ of exhaust energy in each cycle.
(a) Find the energy taken in during each cycle.
(b) what is the engine's thermal efficiency?
A 2.0 kg block is pushed against a horizontal spring and released. The spring sends the block sliding across a tabletop. find the distance to which the spring was initially compressed
Suppose your weight has been constant, but then - after being introduced to really good chocolate - you start eating 100 extra food calories (recall, 1 food calorie is really 1kcal or 1000 calories of energy) every day without otherwise adjusting ..
A vertical straight wire carrying an upward 11 A current exerts an attractive force per unit length of 8.8 multiplied by 10-4 N/m on a second parallel wire 8.0 cm away
Speakers A and B are vibrating in phase. They are directly facing each other, are 8.0 m apart, and are each playing a 76.0-Hz tone. The speed of sound is 343 m/s. On the line between the speakers there are three points where constructive interfere..
questiona car travels all along a straight line at a constant speed of 48.5 mih for a distance d and then another
A square loop of wire with sides of length 36.1 cm experiences a uniform magnetic field perpendicular to its area. find the magnitude of the average emf induced in the loop
What is the smallest thickness of a soap film (n = 1.33) that would appear black if illuminated with 450 -nm light? suppose there is air on both sides of the soap film.
1. starting from rest a proton falls through a potential difference of 2700 v. what speed does it acquire?2. a long
A particle has a charge of +3.1 ?C and moves from point A to point B, a distance of 0.28 m. Find the magnitude of the electric force that acts on the particle
Alpine's incremental borrowing note was 6%. Assuming the lease qualifies as a capital lease, illustrate what amount would be recorded as leased equipment under capital leases on January 1, 2010?
A cubic meter of some material has a mass of 8000 kg. Find the buoyant force on the block and the tension in the cable
For no apparent reason, a poodle is running at a constant speed of 4.40 {rm m/s} in a circle with radius 3.0 {rm m}. Let vec v_1 be the velocity vector at time t_1, and let vec v_2 be the velocity vector at time t_2.
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