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A 0.99-cm-diameter microscope objective has a focal length of 2.6 mm. It is used in visible light with a wavelength of 532 nm.
a. What is the objective's resolving power if used in air?
b. What is the resolving power of the objective if it is used in an oil-immersion microscope with n=1.41?
A 72.3 kg man carrying a 5.23 kg box gets on an elevator. As the elevator accelerates upwards at 0.224 m/s^2, he feels the box is heavier, During this time, what is the weight on the floor from his feet
An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 V for 0.65 ms. find The average power supplied by the pacemaker
A dog running in an open field has components of velocity vx = 2.4m/s and vy = -2.5m/s at time t1 = 11.3s . For the time interval from t1 = 11.3s to t2 = 18.0s , What is the magnitude of the dog's velocity
Find out the time that the arrow spends in the air.
The position of a squirrel running in a park is given by : r=[(00.280 m/s)t+(0.0360 m/s^2)t^2]i+(0.0190 m/s^3)t^3j. At 4.20 , how far is the squirrel from its initial position
Four identical masses of 2.1kg each are located at the corners of a square with 2.0m sides. What is the net force on any one of the masses
Find the current in a 11.00 ? resistor connected to a battery that has an internal resistance of 0.25 ? if the voltage across the battery (the terminal voltage) is 24.00 V
Two lenses, the first with focal length 10.0 cm and the second with focal length -12.5 cm, are separated by 20.0 cm. What is the size of the final image and what is its position
A beam of thermal neutrons emerges from a nuclear reactor and is incident on a crystal. Find the Bragg- scattering angle that results in a scattered beam of this energy
A 52g firecracker is at rest at the origin when it explodes into three pieces. The first, with mass 15g , moves along the x axis at 42m/s in the positive direction. The second, with mass 15g , moves along the y axis at 34m/s in the positive direction..
Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun, but a much smaller diameter. If you weigh 670 N on the earth, what would you weigh on the surface of a neutron star that has the same mass as our su..
A train moving at a constant speed of 66.0 km/h moves east for 43.0 min, then in a direction 56.0° east of due north for 16.0 min, find the average velocity of the train during this run
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