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A line rotates in a horizontal plane according to the equation Y = 2t^3- 6t, where Y is the angular position of the rotating line, in radians, and t is the time, in seconds.
Determine the angular acceleration when t = 2 sec.
A microscope has a 16.8 cm tube length, a 0.64 cm focal length of the objective lens, calculate the microscope's magnification
A standing wave on a 77.4cm long string has three antinodes. If the string has linear mass density 3.92×10?5kg/m and tension 10.1N , what are the wave's frequency
An 80-W, 120-V bulb is connected in parallel with a 25-W, 120-V bulb. What is the net resistance
At a playground, a 22 kilogram boy plays on a slide that drops through a height of 2.1 meter. Determine the boy speed at the bottom of the slide
A hotel elevator ascends 170m with a maximum speed of 4.4m/s. Its acceleration and deceleration both have a magnitude of 1m/s2.
At the Paris Auto Show this week, a concept car by Lamborghini called "Sesto Elemento" (Sixth Element) was being shown. Calculate the average power during the acceleration
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
A star has a mass of 1.87 x 1030 kg and is moving in a circular orbit about the center of its galaxy. The radius of the orbit is 3.5 x 104 light-years, Determine the tangential speed of the star
a fire hose exerts a force on the person holding it. this is because the water accelerates as it goes from the hose
The temperature of 1.3 kg of water is 34° C. To cool the water, ice at 0° C is added to it. The desired final temperature of the water is 11° C. determine how much mass m of ice should be added
A ray of sunlight hits a frozen lake at a 43.9° angle of incidence. At what angle of refraction does the ray penetrate the ice
What is the most probable kinetic energy for a molecule of a gas at temperature T = 300.K
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