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A rocket of total mass 3180Kg is traveling in outer space witha velocity of 115m/s. To alter its course by 35.5 degrees, itsrockets can be fired briefly in a direction perpendicular to itsoriginal motion. If the rocket gases are expelled at a speed of1750 m/s, how much mass must be expelled?
In an amusement park rocket ride cars are suspended from 4.25 m cables attached to rotating arms at a distance of 6.00m from the axis of rotation. What is the angular speed of rotation
A weather vane initially at rest has a moment of inertia of 0.125 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
A thin 11-cm-long solenoid has a total of 440 turns of wire and carries a current of 1.9A, Calculate the field inside the solenoid near the center
A spring system consists of a stationary spring and a 100-gram mass attached to one end that slides along a horizontal frictionless surface, How much total energy is in the spring
The allowed energies of a simple atom are 0.0 eV, 3.0 eV, and 4.0 eV. What is the minimum speed the electron could have after the collision
A star is 4.94 × 1020 m from the Earth. If this star was to burn out today, how many years would it take before we would see it disappear
Three point charges are on the x-axis. The first is located at -4 meters asn has a charge of -6 coulombs. What is the net force on the charge at the origin
How long does it take an automobile travelling 56.50 km/h to become even with a car that is travelling in another lane at 36.50 km/h if the cars' front bumpers are initially 148m apart.
A race car goes around a level, circular track with a diameter of 1.00 km at a constant speed of 77 km/h. What is the car's centripetal acceleration in m/s2
A 2.5-m long board with a mass of 12 kg is placed on a bar so that it is perfectly balanced, i.e., A 22-kg child sits on the left end of the board. What is the torque they exert on the system
A 0.810 kg particle has a speed of 2.60 m/s at point A and kinetic energy of 8.80 J at B. What is its speed at B? reply in units of m/s.
A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.53 m. A third charge of +2q is located on the x axis at such a place that the net electrostatic force on the charge at the origin doubles, its direc..
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