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Using focused laser light, optical tweezers can apply a force of about 14pN to a 1.1\mu m diameter polystyrene bead, which has a density about equal to that of water: a volume of 1.0 {\rm cm}^3 has a mass of about 1.0 {\rm g}.
Estimate the bead's acceleration in g's.
Two converging lenses are used in a particular device. The first lens (the one closest to the object) has a focal length of 200 mm. Find the distance of the final image along with its magnification
A 5.0 multiplied by 102-newton girl takes 10. seconds to run up two flights of stairs to the landing, a total of 5.0 meters vertically above her starting point. What power does the girl develop during her run.
A rectangular coil in the plane of the page has dimensions a = 46.00 m and b = 80.00 m. A long wire that carries a current I = 4.50 A is placed directly above the coil. For what value of x is magnitude of flux through the coil a minimum.
A calorimeter contains 2000 grams of water at 0oc. a jet of stream at 100oc is passed through the water. What is the temperature of the water when 100 grams of steam have condensed in it.
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.860 m/s encounters a rough horizontal surface of length scripted l = 0.65 m, Find the net work done on the crate while it is on the rough surface
For a safe re-entry into the Earth's atmosphere, the pilots of a space capsule must reduce their speed from 2.6 × 104 m/s to 1.1 × 104 m/s. For how long must they fire their engine
q1. what is the smallest thickness of a soap film n1.47 that will appear black if illuminated with 490 nm light?
Two identical brass balls mounted on wooded posts initally have different amounts of charge, one +3uC and the other +15uC. What is the final charge in each ball
On a nice winter day at the South Pole, the temperature rises to ?63°F. What is the approximate temperature in degrees Celsius
The radius of the GM tube's window is 3.5 cm. The source is 3 cm from the GM tube. Compare the surface area of a sphere 3 cm from the source to the area of the GM tube's window.
A flight attendant pulls hero 70 N flight bag a distance of 253 m along a level airport floor at a constant velocity. The force she exerts is 40N at an angle of 52.0 degrees above the horizontal.
A 2.30×103 ? resistor and a capacitor are connected in series and then a 12.00 V potential difference is suddenly applied across them. Calculate the time constant of the circuit
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