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A playground merry-go-round has a disk-shaped platform that rotateswith negligible friction about a vertical axis. The disk has a massof 200 kg and a radius of 1.9 m. A 34- kg child rides at the centerof the merry-go-round while a playmate sets it turning at 0.40rpm. If the child then walks along a radius to the outer edge of thedisk, how fast will the disk be turning (in rpm)?
An object experiences a constant acceleration of 2.0 m/s^2 along the -x axis for 2.7s, Find the initial velocity vector of the object
A ball bearing is dropped from rest at a point A. At the instant it passes a mark 4.5 m below A, How far does the second bearing fall in that time
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.65 105 Pa and the pipe radius is 2.80 cm. Find the speed of flow in the upper section
A current of 2.00 A is flowing through a 1000-turn solenoid of length L = 40.0 cm. What is the magnitude of the magnetic field inside the solenoid
Give at least 3 examples from the electromagnetic spectrum (uses and dangers). Describe the three ways that electricity and magnetism are observed to interact. Describe how microwaves heat water.
An oil tanker has collided with a smaller vessel, resulting in an oil spill in a large, calm-water bay of the ocean. what is the largest total area of the oil slick
A logic circuit has two 2-bit unsigned binary numbers X[1:0] and Y[1:0] as the inputs and it has two 1-bit outputs. One of the outputs is ONE_GTR and the other is X1_XOR_Y1.
The concrete wall of a building is 0.14 m thick. Thetemperature inside the building is 22°C, while the temperatureoutside is 0.0°C. What is the emissivity of the wall
Let the x axis be parallel to the ground, +y direction be vertically upward, and take as an origin the point on the ground directly below the top of the ramp.
A window washer pushes his scrub brush up a vertical window at constant speed by applying a force as shown in the figure below.The brush weighs 12.7 N, θ =54.5° and the coefficient of kinetic friction isμk = 0.154.
An opaque cylindrical tank with an open top has a diameter of 3 meters and is completely full of water. How deep is the tank
A hypodermic syringe is attached to a needle that has an internal radius of 0.303 mm and a length of 3.02 cm. What must the pressure of the fluid in the syringe be in order to inject the solution at a rate of 0.253 mL/s
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