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A spaceship and an asteroid are moving in the same direction away from Earth with speeds of 0.76c and 0.40c, respectively
A. What is the relative speed between the spaceship and the asteroid?
compass needle points 25 degrees E of N outdoors. However, as it is placed 17 cm to the east of a vertical wire inside a building it points 61 degrees E of N. What is the magnitude of the current in the wire? The earth field there is 0.50X10^-4 T ..
A 20x telescope has a 12-cm diameter objective lens. What minimum diameter should the eyepiece lens have to collect all the light rays from an on axis distant source.
A cardinal (Richmondena cardinalis) of mass 3.80×10-2 kg and a baseball of mass 0.146 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p_c of momentum to magnitude p_b of the baseball's momentum.
A distant galaxy emits light that has a wavelength of 699.1 nm. On earth, the wavelength of this light is measured to be 701.6 nm, Decide whether this galaxy is approaching or receding from the earth
A dipole is located at the origin, and is composed of charged particles with charge +e and -e, separated by a distance 9 10-10 m along the y axis
The first puck is deflected 35.8° to the right and moves off at 0.331 m/s. Find out speed of the second puck after the collision.
Determine the period of the wave motion.
A wire loop of radius 0.3 m lies so that an external magnetic field of magnitude 0.30T is perpendicular to the loop. The filed reverses its direction, and its magnitude changes to 0.20T in 1.5s. Find out the magnitude of the average induced emf in..
At time a grinding wheel has an angular velocity of 22.0. It has a constant angular acceleration of 33.0 until a circuit breaker trips at time = 2.20. From then on, the wheel turns through an angle of 431 as it coasts to a stop at constant angular de..
what the electrostatic force acts on the proton.
Earth is farthest from the Sun in July and closest to Sun in January. During which Northern Hemisphere season is Earth moving fastest in its orbit.
Two automobiles of equal mass approach an intersection. One vehicle is travelling with velocity 13 m/s toward the east and the other is travelling north with speed v2i. Neither driver sees the other.
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