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Part A. A dentist wants to purchase a small mirror that will produce an upright image of magnification +4.0 when placed 1.6 cm from a tooth. Find the focal lenght of mirror that she should order. Express your answer to two significant figures and include the appropriate units.
Regarding the Earth and a cloud layer 650m above the Earth as the "plates" of a capacitor, calculate the capacitance. Assume the cloud layer has an area of 1 km2 and that the air between the cloud and the ground is pure anddry.
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.00 min, find the total vector displacement
A particle of mass m=5.00x10^-5kg and a charge q=2.00x10^-5Chas an initial speed of 5.00m/s at point A. The particle is located in a uniform electric field. As the particle moves to position Belong the electric field direction. The potential differen..
A hollow spherical shell has mass 7.85kg and radius 0.220m. What is the kinetic energy of the shell after it has turned through 7.00rev
consider a square of side 44 cm. let one corner point p be charge-free while the other three of the four corners have
Under controlled darkened conditions in the laboratory, a light receptor cell on the retina of a person's eye can detect a single photon of light of wavelength 503nm, What is the intensity in (W/m^2) delivered to a rod
A pulse from a ruby laser (lambda = 694.3 nm) has an average power of 20 MW and lasts 2.3 ns. What is the total energy of the pulse
A projectile is fired with an initial velocity of 20 m/s at 50° above horizontal. At the projectile's highest point, what is its velocity?.What is its acceleration?
A 1150 kg car rolling on a horizontalsurface has speed v = 50 km/h, What is the spring stiffness constant of the spring
Calculate the pressure and energy of a classical relativistic zero mass gas as a function of density and termperature and show that pV = gE, where g is a numerical constant. What is g? Is it different from the non-relativistic case?
The alarm at a fire station rings and a 79-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.3 m). Just before landing, his speed is 1.2 m/s. What is the magnitude of the kinetic frictional force exerted on the fi..
A light ray enters a glass slab at point A at an angle of 58.6° with respect to the surface normal, What minimum value for the index of refraction of the glass can be inferred from this
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