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Consider yourself at the Earth's equator, looking up at the night sky. As you watch the stars, in what direction do they appear to be moving? Find the distance in parsecs to the star Altair, which has an annual parallax of 0.20 arcsec.
A baseball outfielder throws a .150-kg baseball at a speed of 40.0m/s and an initial angle of 30 degrees. What is the kinetic energy of the baseball at the highest point of its trajectory?
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.27 m/s. What is his speed when he catches up
A string of 20 identical Christmas tree lights are connected in series to a 120 Volt source. Find the resistance of a single light
What would be the angle of the first diffraction pattern for a 680 nm laser submerged in water (n=1.33), if the diffraction grating has 600 lines per mm
A car battery stores about 4.0MJ of energy. If all this energy were used to create a uniform electric field of 32kV/m, What volume would it occupy
A 2.2-kg cylinder (radius = 0.10 m, length = 0.50 m) is released from rest at thetop of a ramp and allowed to roll without slipping. What is its translational kinetic energy
An ice cube of volume 8.5 cm3 is initially at a temperature of -16.5°C. Determine how much heat is required to convert this ice cube into steam
A particle of mass 0.450 kg is attached to the 100-cm mark of a meter stick of mass 0.175 kg. Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark
A diffraction grating is made up of slits of width = 300 nm with separation = 1150 nm. The grating is illuminated by monchromatic plane waves of wavelength ? = 560 nm at normal incidence. How many maxima are there in the full diffraction pattern? Wha..
A viscous fluid is flowing through a small tube at a rate of 2.00 × 10-4 m3/s. what is the rate of flow of the fluid
Presume that the resistance between the walls of a biological cell is 4.5 × 109?. (a) What is the current when the potential dissimilarity between the walls is 68 mV? (b) If the current is composed of Na+ ions (q = +e), how many such ions flow in 0.7..
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. What is the magnitude of the electric field in the membrane
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