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Three kilograms of hydrogen contained in a nondeforming sealed vessel are cooled from 400 °C, 400 kPa(abs) until the hydrogen pressure is 100 kPa(abs). Calculate the change in internal energy, enthalpy, and entropy associated with this cooling process.
The rms current in a 54-Ω resistor is 0.50 A. What is the peak value of the voltage across this resistor
A body of mass 5.0 kg is suspended by a spring, which stretches 10 cm when the mass is attached. What is its position as a function of time
Two crates, of mass 77 kg and 108 kg, arein contact and at rest on a horizontal surface (Fig. 4-47). A 729 Nforce is exerted on the 77 kg crate.If the coefficient of kineticfriction is 0.15, calculate the following: the force that eachcrate exerts..
A copper block is removed from a 300°C oven and dropped into 1.00 kg of water at 20.0°C. What is the mass of the copper block
A force vector has a magnitude of 590 newtons and points at an angle 44o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
A roller coaster track has a hill with a circular curve of radius r =15 m. What is the normal force on the 60-kg passenger
Light from a laser passes through two slits and forms a diffraction pattern with bright peaks separated by 0.74 cm on a wall 1.22 meters away. Find the wavelength of the laser light
At a given instant of time, two pressure waves, each moving at the speed of sound, emitted by a point source moving with constant velocity in a fluid at rest are shown in Fig. P11.23.
A proton accelerates from rest in a uniform electric field of 675 N/C. At some later time, its speed is 1.35 106 m/s. (a) Find the magnitude of the acceleration of the proton.
an green hoop with mass mh 2.7 kg and radius rh 0.14 m hangs from a string that goes over a blue soliddiskpulley with
a metal rod of length 48 cm falls toward the earth. the rod is horizontal and oriented east-west. at a moment when the
White light illuminates an oil film on water. Viewing it directly from above, What is the refractive index of the oil
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