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A system of four particles made of 20 g at (4,0), 30 g at (0,6), 25 g at (-4,3) and 40 g at (-3,2) in the xy-plane, rotate about the z-axis through the centre of the coordinate system. The coordinates are given in units of centimetres. Calculate the moment of inertia of the system.
a. 2545gcm2
b. 1850gcm2
c. 3234gcm2
d. 2545gcm2
Air which may be treated as an ideal gas, is compressed from 100 kpa to 1500 kpa in a quasisatatic manner so that it obeys the relation ....pV^1.3 = constant determine the amount of work necessary to compress 100kg of air. The initial temperature ..
Calculate the ratio of the drag force on a jet flying at 899km/h at an altitude of 7.8 km to the drag force on a prop-driventransport flying at half that speed and altitude. The density ofair is 0.51 kg/m3 at 7.8 km and 0.73 kg/m3 at3.9 km.
A car is traveling at 85.1 kilometer per hour at this speed the car has a fuel efficiency of 14.5 km/L. Compute the average flow rate of gasoline into the engine
A train engine weighs 5 times as much as a flatbed car. how fast do the two move after the inelastic collision
A small rocket to gather weather data is launched straight up. Several seconds into the flight, its velocity is 120 m/s, What is the net force on the rocket
Parallel plates are 5 mm apart and 2 m2 in area (you can roll the plates into a cylindrical geometry to make them more compact). A potential difference of 10 kV is applied across the capacitor. Find the capacitance of this parallel-plate capacitor
A 2.0-kg mass is hung from a spring ofspring constant 18 N/m, displaced slightly from its equilibriumposition, and released. What is the frequency of its vibration
An X-ray photon with a wavelength of 0.120 nm scatters off a free electron at rest. What is the kinetic energy of the scattered electron
You have two 120V light bulbs, one 25W and one 100W, that are normally connected in parallel with 120V across each. explain Which one burned out and why
A stonewith a mass of 2.40-kg is released from rest and falls toward Earth(near the surface of the Earth). Use the impulse-momentum theorem to compute its momentum after falling for 4.00 seconds
Nichrome wire of cross-sectional radius 0.750 mm is to be used in winding a heating coil. find the required resistance of the coil
A spring is first stretched 2.0 cm from its unstressed length. It is then stretched an extra 1.8 cm. How does the work required for the second stretch compare to the work needed for the first stretch (give a ratio of second to first)? (Be sure you ar..
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