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A window air conditioner consumes 1500 W of electric power and has COP = 3.7. If it runs continuously for 18h , how much heat gets removed from the house? Express your answer to two significant figures and include the appropriate units.
An L-R-C series circuit L = 0.115H , R = 241? , and C = 7.30?F carries an rms current of 0.450A with a frequency of 401Hz. What is the phase angle in radians
An elevator has mass 540 , not including passengers. The elevator is designed to ascend, at constant speed, a vertical distance of 19.5 (five floors) in 16.2 , What is the maximum number of passengers that can ride in the elevator
A child's top is held in place, upright on a frictionless surface. The axle has a radius of r= 2.21 mm. Two strings are wrapped around the axle, How much angular momentum does the top acquire
Soccer ball is kicked with a speed of 11.50 m/s at an angle of 30.0° above the horizontal. If the ball lands at the same level from which it was kicked, how long was it in the air.
The figure shows a thermodynamic cycle consisting of two constant pressure steps (A->B and C->D) connected by two constant volume steps (B->C and D->A). A heat engine operates according to this cycle using a diatomic ideal gas (f = 5).
how do I find the magnitude of a magnetic and electric field at a certain time (The Erms and Brms are given as well as the period and intensity? What is the equation?
q1. what is the smallest thickness of a soap film n1.47 that will appear black if illuminated with 490 nm light?
Your new sports car of mass m is accelerated from rest at t=0 with constant power P along a level road. ingore any resistance effects, find the speed of your car as a function of time
In a liquid with a density of 1500 kg/m^3, longitudinal waves with a frequency of 360 Hz are found to have a wavelength of 7.70 m. Calculate the bulk modulus of the liquid
What is the maximum number of lines per centimeter a diffraction grating can have and produce a complete first-order spectrum for visible light
An L-R-C circuit, operating at 60 Hz , has an inductor with an inductance of 1.53x10^-3 H, a capacitance of 1.67x10^-2 F, and a resistance of 0.329 ohms. What is the capacitive reactance of the circuit
In a region of two-dimensional space, there are three fixed charges: +1 mC at (0, 0), −2 mC at (12 mm, -7 mm), and +3 mC at (-6 mm, 18 mm). What is the direction of the magnitude on the −2-mC charge counterclockwise from the +x-axis?
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