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A plane flies 500 km east from city A to city B in 45.0 min and then 930 km south from city B to city C in 1.50 h. (Assume i points east and j points north.)
(a) In magnitude-angle notation, what is the plane's displacement for the total trip? ( km angle ° )
(b) In magnitude-angle notation, what is the plane's average velocity for the total trip? ( km/h angle ° )
(c) What is the plane's average speed for the trip? km/h
An air conditioner is used to keep the interior of a house at a temperature of 25C while the outside temperature is 34C a)If heat leaks into the house at the rate of 11kW, and the air conditioner has the efficiency of a Carnot engine, what is the ..
Two point charges 2.0cm apart have an electric potential energy -400?J . The total charge is 25nC, What is the lesser and larger charge
In a Carnot cycle, the isothermal expansion of an ideal gas takes place at 400K, determine the work performed by the gas during the cycle
Illustrate energy bar graphs to solve the problem . What is amplitude of the oscillations.
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of single wavelength. It then falls on two slits separated by 0.410 . In resulting interference pattern on a screen 2.10 away, adjacent bri..
A 10.0-uF capacitor, a 40.0-uF capacitor, and a 100.0-uF capacitor are connected in parallel across a 12.0v battery. what is the equivalent capacitance of the combination
A uniform meter stick with a mass of 205 g is supported horizontally by two vertical strings, one at the 0 cm mark and the other at the 90 cm mark. what is tension on the string at the 0 cm mark and at the 90 cm mark.
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 16.0° below the horizontal. The length of time the car is in the air
A 3.0 m long rigid beam with a mass of 125 kg is supported at each end. An 65 kg student stands 2.0 m from support 1. How much upward force does each support exert on the beam
what is its potential energy relative to the bottom of the shaft? how fast will the payload be traveling when it reaches the bottom of the shaft? convert your answer to mph for a comparison to highway speeds.
A 54.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 3m. What speed does he need at the bottom?
R-134a is flowing at 1kg/s and throttled from 850 kPa and 40 C to - 40 C. Heat is gained at a rate of 1 kJ/s from the surroundings at 25 C
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