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A billiard ball of mass m= 0.150 kg hits the cushion of a billiard table at an angle of θ1= 44.0° at a speed of v1= 2.60 m/s. It bounces off at an angle of θ2= 49.0° and a speed of v2= 2.20 m/s. What is the magnitude of the change in momentum of the billiard ball? In which direction does the change of momentum vector point? (Take the x-axis along the cushion and specify your answer in degrees.)
An electric motor can accelerate a 4-kg grinding wheel in a form of a solid disk of radius 0.2 m from rest to 75 rad/s in 15 s. Find the torque generated by the motor
2 kg of a saturated mixture aat 200 kpa and 20 quality is heated at a constant temperature until it becomes a saturated
A 6.5 x 104-kg space probe is traveling at a speed of 14000 m/sthrough deep space. Retrorockets are fired along the line of motionto reduce the probe's speed. What is the final speed of the probe
how much work does the electric field do in moving a proton from a point with a potential of 130 v to a point where it
An unknown piece of material with a mass of 5.1 kg and density of 1422 kg/m^3 is suspended from a string and then completely immersed in a container of water. Determine the volume of the piece of material
a uniform stick is held horizontally and then released. at the same instant one end is struck with a quick upwards
an ac generator consists of 6 turns of wire. each turn has an area of 0.040m2. the loop rotates in a uniform field
A 16 mH inductor is connected across an AC generator that produces a peak voltage of 11V. What is the peak current through the inductor
a what is the frequency of blue light that has a wavelength of 450 nm?b what is the frequency of red light that has a
The wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius rh = 0.421 m and mass 5.27 kg, what should the radius of the disk be
One mole of an ideal monatomic gas is expanded adiabatically and quasi-statically from a pressure of 1,172 kPa and a temperature of 273 K to a pressure of 279 kPa. What is the final volume of the gas in cubic metres?
A photographer uses his camera, whose lens has a 50 mm focal length, to focus on an object 3.5m away. How far must the lens move to focus on this second object
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