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On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 , length 89.6 and diameter 3.00 from a storage room to a machinist. Calculate the weight of the rod, . The acceleration due to gravity, = 9.81.
A camera takes a perfectly exposed picture when the lens diaphragm is set to f/4 and the shutter speed is 1/250 s, what should the new shutter speed be so that the exposure is still correct
A container of cross-sectional area 102 cm2 contains liquid of density 1.50 g/cm3 to a height of 5.90 cm above a small hole of area 1.00 cm2 in the side. Find the speed of the fluid as it leaves the hole
A car moving at 10 m/s crashes into a barrier and stops in 0.50s. There is a 20kg child in the car. Suppose that the child's velocity is changed by the same amount as the cars in the same time period.
A lump of putty with a mass of 0.210 kg and a speed of 0.830 c collides head-on, What is the mass of the system after the collision
The random noise level of a buzzing mosquito is 32dB and that heard in a typical classroom is 71dB. How many mosquitos are required to make a noise level equivalent to that heard ina typical classroom
A 48 kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s. determine her altitude as she crosses the bar
A woman can read the large print in a newspaper only when it is at a distance of 59 cm or more from her eyes. What should be the refractive power (in diopters) of her glasses
A wooden raft has a mass of 59 kg. When empty it floats in water (density 1000 kg/m3) with 59 percent of its volume submerged. What mass of sand can be put on raft without it sinking.
The unit of horsepower was defined by considering the power output of a typical horse. What power does this represent in hp
An ideal monatomic gas expands isothermally from 0.500 m3 to 1.25 m3 at a constant temperature of 630 K, Find the thermal energy transfer Q
A circular loop of wire of resistance R= .500 ohms and radius r=8.00cm is in a uniform magnetic field out of the page, Find the rate at which the field is changing
what is the electrostatic force that acts on this charge. What would be the least speed required for the rest of the trip to arrive in time for the interview.
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