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On an inclined plane of 30° a block, mass m2 = 4 kg, is joined by a light cord to a solid cylinder, mass m1 = 8 kg, radius r = 5 cm (Fig. 1). Find the acceleration if the bodies are released. The coefficient of friction between the block and the inclined plane μ= 0.2. Friction at the bearing and rolling friction are negligible.
A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wave completes 40 vibrations in 35.0 second. Evaluate what is the wavelength
A block in the shape of a rectangular solid has a cross-sectional area of 4.48 cm2 across its width, a front-to-rear length of 22.1 cm, find the magnitude of the electric field in the block
an object mass 10.0 kg slides upward on a slippery vertical wall. a force f of 60n acts at an angle of 60 degrees.
A 3900-Ω resistor and a 1.3-µF capacitor are connected in series across a generator (60.0 Hz, 120 V rms). Decide the average power delivered to the circuit.
Calculate a realistic estimate for the temperature at the surface of Neptune using the black body radiation formula. Use thefollowing facts. Radius: 24746 km. Distance from sun:4460000000 km.The remaining needed data are available in Lecture 1. Tempe..
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is = 1.72 × 109 W/m2. What is the rms value of (a) the electric field and (b) the magnetic field in the electromagnetic wave emitted by the laser.
two identical springs have unstretched lengths of .25m and spring constants of 300 nm. the springs are attached to a
What is the distance of closest approach of the two particles? (Assume that the gold nucleus remains stationary
A train is slowing down from 46 m/s to 12 m/s in 9.0 s. Assume constant acceleration. How far did it travel in this time
The distance to a star is approximately 7.60 x 1018 meter. If this star were to burn out today, in how many years would we see it disappear? Find how long does it take for sunlight to reach Mars
An isolated conductor of arbitrary shape has a net charge of +1.30×10-5 C. Inside the conductor is a cavity within which is a point charge q = +3.25×10-6 C. What is the charge on the cavity wall
The climate of regions adjacent to large bodies of water (like the Pacific and atlantic coats) usually features a narrower range of temperature than the climate of regions far from large bodies of water (like the prairies) why?
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