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A disk rotates about a fixed axis with an initial angular velocity of 20 rad/s. During a 5.0-s interval the angular velocity decreases to 10 rad/s. Assume that the angular acceleration is constant during the 5.0-s interval. How many radians does the disk turn through during the 5.0-s interval?
Gas is contained in a 6.00-L vessel at a temperature of 21.0°C and a pressure of 8.00 atm. Determine the number of moles of gas in the vessel
A scaffold of mass 44 kg and length 6.0 m is supported in a horizontal position by a vertical cable at each end. What is the tension in the cable closer to the painter
A 44.0 kg child is in a swing that is attached to ropes 1.60 m long. The acceleration of gravity is 9.81 m/s2. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions.
A 2.10-cm-high insect is 1.50m from a 139-mm-focal-length lens. Where is the image? Follow the sign conventions, How high is the image
two charged particles, Q1=+4.60 nC and Q2=-2.50 nC, are separated by 32.0 cm. What is the eletrical potential energy of the pair
A certain metal with atomic mass (2.1 x 10^-25)kg has an interatomic bond with length (2.3 x 10^-10)m and stiffness 42 N/m
an airplane with a wingspan of 100m flies parallel to the earth's surface at a point where the downward component of the earth's magnetic field is 0.500 x 10^-4 T. what is the reading of the voltmeter
What is the terminal speed at which the bar falls? Imagine the bar remains horizontal and in contact with the rods at all times.
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m^3, length 91.5cm, obtain the weight of the rod
while the other terminal of the ammeter is connected to the other wire, ammeter shows that the current through the wire is 1 A. You then disconnect everything and travel to the other end of the telephone line, where you repeat the process and find ..
A 11.20 kg object oscillates at the end of a vertical spring that has a spring constant of 2.10 104 N/m. The effect of air resistance is represented by the damping coefficient b = 3 N•s/m.
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up, How much power does the battery deliver to the circuit
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