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An 800 g steel plate has the shape of the isosceles triangle shown in the figure(Figure 1) . The hieght of the triangle is 30 cm and th base is 20 cm. What is the x-coordinates of the center of mass?
Hint: Divide the triangle into vertical strips of width dx, then relate the mass dm of a strip at position x to the values of x and dx. What is the y-coordinates of the center of mass?
A Jaguar car can accelerate from 0 to 60 mph in 4 sec. What is the average acceleration during this time period
a horse walks in a 24 ft diameter circle making 144 trips around the circle in one hour. using the currently accepted
One mole of an ideal diatomic gas is heated from a temperature of 22 degrees C to a temperature of 95 degrees C. How much heat in joules must be supplied if the volume is kept constant during heating?
A syringe with a barrell with a diameter of 0.20 m is filled with water. What is the speed of the jet of water out of the syringe
A nucleus of mass number A, initially at rest, absorbs a neutron which is moving very slowly (of negligible kinetic energy). The rest mass of the neutron is 1.0087 u. An alpha particle of mass 4.0026u leaves the reaction with velocity 1.95 × 107 m..
A 2 meter straight wire carrying 5 Amp current runs horizontally and experiences 8 Newton horizontal force while in a 2 T magnetic field. Obtain direction of the magnetic field with respect to horizontal
Consider a book of mass 10 kg on a frictionless incline that makes an angle of 40? with the horizontal. Find the acceleration of the book down the incline
A cube of ice is taken from the freezer at -8oC and placed in a 110 g aluminum calorimeter filled with 300 g of water at a temperature of 22oC. What was the mass of the ice cube
A rectangular boat (4.5 meter long, 2.0 meter wide and 0.3 meter high), is overloaded such that the water level is just 1.0 c. Determine the combined mass of the people in the boat
The mass-to-charge ratio (m/Q) of a proton is 1.044 x10-8 kg/C. You want to build a particle trap in a lab. What magnitude electric field is needed to make it hover in a vacuum, i.e., not fall under the influence of gravity?
what is the highest order of the interference maximum possible for a diffraction grating with 500 lines per millimeter
A 66-N ? m torque acts on a wheel with a moment of inertia 175 kg ? m2. If the wheel starts from rest, how long will it take the wheel to make one revolution
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