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Estimate the speed at which the drag on a 150 g steel ball becomes equal to about one percent of its weight. (The density of steel is about 7900 kg/m^3 and C for a sphere is about equal to 0.5.)
A parallel plate capacitor is constructed with Teflon(dielectric constant is 2.1) between the plates. What charge is stored on the plates
question a radio station with a power of 20 kw sends out an omnidirectional wave at 1.25 mhz.a. if the electromagnetic
A 20-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 35 N. Starting from rest, the sled attains a speed of 2.6 m/s in 9.1 m. Find the coefficient of kinetic friction between the runners of the sled and the sn..
a dog running in an open field has components of velocity 3.2 and -1.6 at time 10.4 . for the time interval from
Dan is gliding on his skateboard at 3.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground
A grinding wheel is in the form of a uniform solid disk of radius 6.93 cm and mass 1.97 kg. how many revolutions does it turn while accelerating
A street lamp weighs 150 Newton. It is supported by two wires that for man angle of 120o with each other. The tensions in the wires are the same. determine what is the tension in each wire
In the Compton effect, an X-ray photon of wavelength 0.31 nm is incident on a stationary electron. What is the wavelength of the scattered photon
Coherent light with wavelength 601nm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 m from the slits, For what wavelength of light will the first-order dark fringe
You have a concave spherical mirror with a 13.3-cm radius of curvature. You place an object on the mirror's axis, 19.7 cm in front of the mirror
a charge is accelerated from rest through a potential difference and then enters a uniform magnetic field oriented
The coefficient of static friction between Teflon and scrambled eggs is about 0.04. Determine what is the smallest angle from the horizontal that will cause the eggs to slide across the bottom of a Teflon-coated skillet
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