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In the figure, a physical pendulum consists of a uniform solid disk (of radius R = 56.6 cm) supported in a vertical plane by a pivot located a distance d = 24.0 cm from the center of the disk. The disk is displaced by a small angle and released. What is the period of the resulting simple harmonic motion?
An open flask sitting in a lab fridge looks empty, but we know that actually it is filled with a mixture of gases called air. If the flask volume is 0.00415 m3 and the air is at standard temperature and pressure, how many gas molecules does the flask..
The space shuttle is in a 250km -high circular orbit. It needs to reach a 700km -high circular orbit to catch the Hubble Space Telescope for repairs. How much energy is required to boost it to the new orbit
A mass of 8 kg is resting on a horizontal table with a coefficient of kinetic friction of 0.35. Calculate the linear acceleration of the system
Two lenses, one converging with focal length 21.0cm and one diverging with focal length ? 10.0cm , are placed 25.0?cm apart. Find the final image distance from second lens
A scientist changes the frequency of an incident X-ray to 4.50e19 Hz and measures the deflected X-ray frequency of 4.32e19 Hz. What was the angle of deflection
A merry-go-round is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular speed of 0.775 rad/s. At what time will the dog reach the bone
A cylinder contains 2.25 mol of helium gas at 21.0°C. Assume that the helium behaves like an ideal gas. What is the average kinetic energy per molecule
The radar system at an airport broadcasts 15 GHz with 150 kW. An approaching airplane with a 34 m^2 cross section is 24km away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all di..
questiona.if puck has a radius of 2 cm what is the ratio of angular to linear velocity for which kinetic energy of
Objects with masses of 145kg and a 445kg are separated by 0.330m. At what position (other than infinitely remote ones) can the 32kg object be placed so as to experience the net force of zero.
Suppose the same masses are used for a force table experiment as were used in Part 1, but each pulley is moved 180° so that the 0.100 kg mass acts at 200°, and the 0.200 kg mass acts at 270°. What is the magnitude of the resultant in this case
A structural I beam is made of iron. A view of its cross-section and its dimensions is shown in the figure, where d = 2 cm, w = 29 cm, h = 30 cm, How many atoms are there in this section
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