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A block is released from rest at the top of an incline, which makes a 30° angle with the horizontal. The incline is 12m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, μk, between the block and the incline?
q1. a 62.6-kg chandelier is suspended 1.5 m below a ceiling by three wires each of which has the same tension and the
A 2.50-cm-diameter parallel-plate capacitor with a spacing of 0.900 mm is charged to 500 V. What is the total energy stored in the electric field
An object is placed in front of a concave mirror of focal length f = 30 cm, such that the object-to-image distance is 7 cm. The image is virtual. Find the magnification.
An isolated spherical conductor of radius 12 cm is charged to 2 kV. How much charge is on the conductor
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. How far short of the target should it drop the package
The nucleus of an atom has a radius of about 7.9Ã-10-15 m. The electron is normally at a distance of about 3.4Ã-10-11 m from the nucleus, Find the volume of the nucleus
A standing wave is set up in a 200-cm string fixed at both ends. The string vibrates in 5 distinct segments when driven by a 120-Hz source. What is the fundamental frequency for the string
Item 4 To start her lawn mower, Julie pulls on a cord that is wrapped around a pulley. The pulley has a moment of inertia about its central axis of I = 0.660Kg(metersquared) and a radius of 6.00cm . There is an equivalent frictional torque impedin..
A spherical 0.34 kg orange, 2.0 cm in radius, is dropped from the top of a building of height 33 m. After striking the pavement, the shape of the orange is a 0.40 cm thick pancake. Neglect air resistance and assume that the collision is completely in..
A 16 kg projectile is fired from a cannon off a cliff. As it moves through a parabolic trajectory it splits into 6kg and a 10 kg. How far away from the 6 kg piece does the 10 kg piece land
1. the ground state ofnbsp has jpi 32-1 the first excited state at 67.4 kev has jpi 12-1 and the second excited state
The Sun is approximately a sphere of radius 6.963 105 km, at a mean distance a = 1.496 108 km from the Earth. calculate its surface temperature
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