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Determine the rate of change H A of the angular momentum HA of the assembly of the plate of Prob. 18.3, assuming that it has an angular velocity ω = ω and an angular acceleration α = αj
Prob. 18.3 A thin homogeneous square of mass m and side a is welded to a vertical shaft AB with which it forms an angle of 45°. Knowing that the shaft rotates with an angular velocity ω, determine the angular momentum of the plate about A.
An insulating sphere with a radius of 3.2×102 m has a uniform charge density of 5.78 C/m3 throughout its volume. Find the magnitude of the electric field at the surface of the sphere
A popular brand of cola contains 4.90 g ofcarbon dioxide dissolved in 1.00 L of soft drink. what volume does the gas occupy
A speed skater moving across frictionless ice at 8.80 hits a 4.20-m-wide patch of rough ice. What is her acceleration on the rough ice
Superman throws a 0.18 kg baseball at a speed of 0.932c. Find the following for the baseball.-rest energy, kinetic energy, total energy
A38.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of20.0m. What force does the seat exert on the child at the highest point of the ride
Light from a 560nm source is incident upon the surfacenof fused quartz at an angle of 60 degrees. What is the angle of reflection from the surface
A 6.0-V battery is connceted in series with a 29-mH inductor, a 110-Ω resistor, and an open switch. After the switch is closed, how much time will elapse before the current in the circuit will be equal to 12 mA?
What are (a) the x component and (b) the y component of a vector in the xy plane if its direction is 254° counterclockwise from the positive direction of the x axis and its magnitude is 8.4 m?
A tank contains mercury, whose density is 13,600 kg/m^3. Find the force exerted by the mercury on a circular plug
Four point charges have the identical magnitude of 2.52 x 10-12 C and are fixed to the corners of a square that is 4.02 centimeter on a side. Find the magnitude of the net electric field that exists at the center of this square
A projectile is fired with an initial speed of 65.2 m at an angle of 34.5? above the horizontal on a long flat firing range. find The maximum height reached by the projectile
A large window measures 1.8m by 3.2m . At what rate will heat be conducted through the window when the room temperature is 27C and the outside temperature is 0C if the window consists of a single pane of glass 4.4mm thick. (Assume that there is a con..
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