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A heat pump has a coefficient of performance of 3.75 and operates with a power consumption of 7.13 103 W.
(a) How much energy does it deliver into a home during 24 h of continuous operation?(b) How much energy does it extract from the outside air?
A ship sets out to sail to a point 212 km due north. An unexpected storm blows the ship to a point 156km due east of its starting point. How far must it now sail to reach its original destination.
An oil droplet with 10.0 excess electrons is observed between two parallel electrodes spaced 12.0 mm apart. What is the radius of the droplet
q1. consider a too-small space station that consists of a 3.8 m radius rotating sphere. a man standing inside is 1.9 m
A concentration difference of a certain solute of 1.0 Ã- 10â€"2 kg/m3 is maintained between the ends of a tube with a length of 3.5 m and a cross-sectional area of 0.25 m2. What is the diffusion constant for the solute
question1-what would be direction of the surface winds that would exist in the tropics mid-latitudes and polar regions
A photon of red light (wavelength = 710 nm) and a Ping-Pong ball (mass = 2.10 × 10-3 kg) have the same momentum. At what speed is the ball moving
Bailey is trying to save a young girl under a 15 m long wooden beam. She lifts the beam up from one side with a force of 25 N using her nose. find the magnitude of the torque that Bailey puts on the beam
You are pulling a suitcase through the airport at a constant speed. the handle of the suitcase makes an angle of 53 degrees with respect to the horizontal direction. what is the force of friction acting on the suitcase
A Michelson interferometer splits a beam of light of unknown wavelength producing a bright fringe (i.e., all of the intensity) at the detector, What is the wavelength of the unknown light
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.7 degrees. Find the the angle the resultant force makes with dog A's rope
White light is incident on a soap film (n = 1.30) in air. The reflected light looks bluish because the red light (? = 695 nm) is absent in the reflection, What is the minimum thickness of the soap film
An "extreme" pogo stick utilizes a spring whose uncompressed length is 48 and whose force constant is 1.1×104. Calculate her upward acceleration, in g's at that moment
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