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A certain star exhibits a parallax angle of .016 arc seconds. What is the distance to the star in parsecs? If this star was located at a distance of 800 parsecs, what parallax angle would the star now exhibit?
A 35.5 kg girl and a 58.0 kg boy are on the surface of a frozen lake, 12.5 m apart. Using a rope, the girl exerts a horizontal 4.60 N force on the boy, pulling him toward her. Draw a free body diagram. Compute the magnitude of the girl's acceleration
your refrigerator has a mass of 124.7 kg including the food in it. it is standing in the middle of your kitchen and you
A laser produces an average power of 5.5 W in a light beam 1.0 mm in diameter. Find the peak electric field of the laser light
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is ? = 1.90 10-7 C/m2, and the plates are separated by a distance of 1.5 10-2 m. How fast is the electron moving just bef..
suppose that you are traveling on board a spacecraft that ismoving with repect to the earth at a speed if .985c. what is your breathing rate
for all problems of this assignment consider nuclear power plant npp with pressurized water reactor pwr. reactor have
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. what is the current in the solution
A toy train is pushed forward and released at xi = 2.4 m with a speed of 1.4 m/s. What is the train's acceleration after its wheel begins to stick
Using the mass-luminosity relationship if a main sequence star has a luminosity of 3000 times the luminosity of the Sun, what is its mass in relation to the Sun?
A world-class sprinter accelerates to his maximum speed in 4s . He then maintains this speed for the remainder of a 100m race, What is his average acceleration for the entire rac
A monoenergetic beam of electrons in incident on a single slit of width 1.05 nm. A diffraction pattern is formed on a screen 20 cm from the slit. what is the energy of the incident electrons
The minute hand of a wall clock measures 14 cm from its tip to the axis about which it rotates. The magnitude and angle of the displacement vector of the tip are to be determined for three time intervals.
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