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1- How far away is the star Spica, whose parallax is 0.012"?
2- A star lying 35pc from the Sun has proper motion of 0.2"/yr . A-What is the star's transverse velocity? B-If the star's spectral lines are observed to be redshifted by 0.03 percent, calculate the magnitude of its three-dimensional velocity relative to the Sun.
Ignoring the container and the equilibrium vapor pressure of the liquid at 51.5 °C, find out the ratio of the mass of steam to the mass of ice. The specific heat capacity of steam is 2020 J/(kg C°).
A golfer takes two putts to get his ball into the hole once he is on green. The first putt displaces the ball into the ball 6.7 m east, and the second 2.16 m south. What displacement would have been needed to get the ball into the hole on first putt.
A 1.0-cm-thick layer of water stands on a horizontal slab of glass. What is the ray's direction of travel in the glass
A thin glass rod forms a semicircle of radius r = 3.03 cm. Charge is uniformly distributed along the rod, with +q = 1.05 pC in the upper half and -q = -1.05 pC in the lower half
What is value of Earths magnetic field
Presume that the strength of the electric ?eld about an isolated point charge has a certain value at a distance of 4 m.
A light string is wrapped around a solid cylinder and a 200 g mass hangs from the free end of the string, what is the tension and the mass of the cylinder
The intensity of light from the sun is about 1000 W/m^2 on Earth. The distance between Mars, What is the intensity of light from the Sun on Mars
A circular saw blade completes 1200 revolutions in 40 rm s while coasting to a stop after being turned off. Assuming steady deceleration, what are (a) angular deceleration and (b) initial angular speed.
An electron is traveling through a region of space in which the electric field is along the +x direction and has a magnitude of 2313 N/C. What is the acceleration of the electron? magnitude m/s2 direction
A 33.6 m length of copper wire at 23?C has aradius of 0.19 mm . The resistivity of copperis 1.7 × 10?8 ? m, determine the current in the wire
A 16 cm x 16 cm square loop of wire lies in the xy-plane with its bottom edge on x-axis. The resistance of the loop is 0.490 ohms. A magnetic field parallel to the z-axis is given by B= 0.830 y^2 t, where B is in tesla, y in meters, and t in seconds...
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