
The Voyager I spacecraft left Earth in 1977 traveling at about 17 km/s. If it was headed in the right direction, in what year would it reach the nearest star, Proxima Centauri at a distance of 1.3 pc?
A pilot sets an air speed and heading of 575. km/hr at 36.6 degree S of W A wind is blowing at (58.0i + 58.0j)km/hr. a) Determine the plane s velocity, in km/hr, with respect to the air in unit vector (i,j,k) notation. b) Determine the velocity, in km/hr, the air traffic control station observes for the plane unit vector (i,j,k) notation.
Given a rocket with an exhaust velocity of 5.0 km/s that needs to achieve 30.0 km/s velocity what is the fraction of payload to total weight of rocket at launch? IMPORTANT: Express your answer as a ratio of final mass to launch mass.
An asteroid is approaching earth at 1.48 km/s when it is 7500 km from earth's surface. How fast is it moving when it is 3100 km above earth's surface? Give answer in km/s.
A three-phase transmission line is 370 km long. The series impedance of the line is0.524angle79.4 Ω/km and the susceptance is j3.17x10^-6 S/km. The voltage at thesending end is 400 kV. (i) Find the sending end current and the receiving end voltagewhen there is no load on the line. (ii) Determine the maximum permissible line lengthif the receiving end no-load voltage is not to exceed 430 kV.
Km = {(Vmax([S]))/(V)} – [S] • Vmax = 100 (units) • At [S] = 20 M • Velocity = 25 (units) calculate Km
OLDOS Sixth Problem 2000 Ho=68 km/s Mpc ** Redshift (km/s) 1000 ++ Virgo Cluster + 0 20 10 Distance (Mpc) According to Hubble's Law, what is the recessional velocity of a galaxy that is 130 Mpc away? Part 2/6 km/sec
2000 Ho=68 km/s Mpc x Redshift (km/s) 1000 + * + Virgo Cluster + + + 0 10 20 Distance (Mpc) 1 The age of the universe can be estimated by calculating which corresponds to the amount of time it H would take for all the galaxies to get to the distances they are today if they had been moving away from us at the time of the Big Bang with the speeds we measure them to be moving. The...
Four successive displacements of 4 km, 5 km, 4 km, and 2 km are at right angles to each other as shown in the diagram. The magnitude of the resultant displacement is 5. 5 km 4 km 4 km 2 km A. 4 km B. 15km C. 3km D. -5 km E. -15 km 6. The graph shows how the position of a particle depends on time. x, m 4 2 4 6 8 t,s Which choice is closest to...
6. A meteorite heads straight for the Moon. If it is traveling at 1.85 km/s when very far away, with what speed does it hit the Moon’s surface? (The mass and radius of the Moon are 7.35x1022 kg and 1740 km respectively.) a) 2.86 km/s b) 2.94 km/s c) 3.01 km/s d) 3.17 km/s e) 3.34 km/s