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The resolving power of a microscope depends on the wavelength utilized. If one wished to "see" a particular type of molecule, a resolution of 1.2*10-10 m would be needed.
a) If electrons are used (in an electron microscope), what minimum kinetic energy is needed for the electrons?
_____________ keV
b) If photons are utilized, what minimum photon energy is required to obtain the required resolution?
a 1010-kg car is being driven up a 6.03 deg hill. the frictional force is directed opposite to the motion of the car
A 200g oscillator in a vacuum chamber has a frequency of 2hz. How many oscillations will have been completed when the amplitude is 30% of its initial value
An electric eel develops a 460V potential difference between its head and tail. What is the energy delivered by this pulse
A bullet of mass m= 0.0230 kg is fired along an incline and imbeds itself quickly into a block of wood of mass M= 1.30 kg.obtain the speed of the bullet just before it hits the wood
A U-tube contains liquid of unknown density. An oil of density 787kg/m3 is poured into one arm of the tube until the oilcolumn is 11 cm high. Find the density of the liquid
A cube of wood having an edge dimension of 20.3 cm and a density of 647 kg/m3 floats on water. What is the distance from the horizontal top surface of the cube to the water level?
what time delay Delta t is necessary. A boxcar of mass 600 tons at rest becomes uncoupled on a 5.00 grade. If the track is considered to be frictionless, what speed does the boxcar have after 15 seconds.
A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.50 hours. What is the density of the planet? Assume that the planet has a uniform density.
A long thin rod lies along the x-axis. One end is at x=2.00 m and the other at x=3.00 m. Its linear mass density ? =0.400 x2+0.600, in kg/m. Calculate mass of the rod. Calculate the x-coordinate of the CM of the rod.
a 7.80-g bullet moving at 480 ms penetrates a tree trunk to a depth of 6.5 cm.a use work and energy considerations to
A particle with a charge of -2.50×10-8 C is moving with an instantaneous velocity of magnitude 40.0 km/s in the xy-plane at an angle of 50.0 degree counterclockwise from the +x axis. Find the magnitude of the force exerted on this particle
block A which is 19.3 N is placed on a frictionless ramp that is inclined at 15 degrees. Block B which is 15.7 N is placed on top of the block, estimate the tension in the cord
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