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Question: A wheel changes its angular velocity with a constant angularacceleration while rotating about a fixed axis through itscenter.
a) show that the change in the magnitude of the radial accelerationduring any time interval of a point on the wheel is twice theproduct of the angular acceleration, the angular displacement, andthe perpendicular distance of the point from the axis.
b) The radial acceleration of a point on the wheel that is 0.250 mfrom the axis changes from 25.0 m/s2 to 85m/s2 as the wheel rotates through 15.0 rad. Calculatethe tangential acceleration of this point.
c) Show that the change in the wheel's kinetic energy during anytime interval is the product of the moment of inertia about theaxis, the angular acceleration, and the angular displacement.
d) during the 15.0 rad angular displacement of part (b), the kineticenergy of the wheel increases from 20.0 J to 45.0J. What is themoment of inertia of the wheel about the rotation axis?
a woman can read the large print in a newspaper only when it is at a distance of 57 cmor more from her eyes.a is she
Suppose the space shuttle is in orbit 320km from the Earth's surface, and circles the Earth about once every90.9 minutes. Find the centripetal acceleration of the space shuttle in its orbit.
Suppose that a person singing in the shower is producing1.34 mW of sound power. Some of the soundis reflected from the floor and ceiling. The intensity of this reflected sound at a distance of 3.01 mfrom the source is 4.40 10-6 W/m2.
If a bungee cord is stretched horizontally to a length of 2.6 , the tension in the cord is 1.9. What is the tension in the 3.5-m-long cord
Two electrons are located at two of the vertices of an equilateral triangle, one at each vertex. The length of one side of the triangle is 1.00 nm. What is the net electric field at the third vertex
two boxes are sitting on a horizontal frictionless surface. Box A has a mass of 30kg and box B has a mass lof 20 Kg. what is the tension in the connecting rope
A steel tank contains 301 g of ammonia gas (NH3) at a pressure of 1.35 ? 106 Pa and temperature of 71°C. What is the volume of the tank
Find the maximum temperature in a Carnot cycle operating in a room-temperature (23 degrees C) environment if its Carnot efficiency is 0.2. Express your answer using one significant figure. TH = ? K
A square wire loop with 1.5 m sides is perpendicular to a uniform magnetic field, with half the area of the loop in the field. The loop contains an ideal battery with emf = 19 V. find the direction of the net emf in the circuit
A car traveling at 30 m/s suddenly encounters a 20o hill. The car is coasting with no power input. determine how far up the hill will the car go before it stops
Agriculture and forestry for food and fuels, space heating of large and small buildings, water heating, and heating for drying and many other processes are current and potential applications of solar energy.
An alpha particle is a helium nucleus that consists of two protons bound with two neutrons. An alpha particle moving during a perpendicular magnetic field of 1.5 T experiences an acceleration of 2000 m/s 2 . Determine is the alpha particles speed?
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