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A rocket rises vertically, from rest, with an acceleration of4.0 m/s until it runs out of fuel at an altitude of1300 m. After this point, its acceleration is that of gravity,downward. What is the velocity of the rocket when it runs out of fuel?
two long parallel wires separated by 50 cm both carry currents of 4.0 A in the same vertically up direction. Find the magnetic field midway between the wires
The work needed to remove an electron from the surface of sodium is 2.3 eV. How big maximal velocity will have electrons if the surface of sodium will be illuminated with ultraviolet light wave length
The plate seperation of a parallel plate capacitor is 1mm. The area of the plates is 10cm2. Determine the energy stored in the capacitor with the dielectric
A sotne of mass 0.3 kg tied to the end of string in ahorizontal plane in whriled round in a acircle of radius 1m, What is the tension in the string? What is the max speed with which the stone can be whriled around
An iron rod is heated by a welder's torch. Initially it glows a dull red, then a brighter orange, and finally very bright white. Discuss this sequence in terms of black-body radiation.
Two identical aluminium objects are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at the higher potential.
An object consists of a ball of weight W glued to the end of a uniform bar also of weight W. if you release it from rest, with the bar horizontal.
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is ? = 3.00 10-7 C/m2, and the plates are separated by a distance of 2.9 10-2 m. How fast is the electron moving just bef..
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 90.0 km/h, 5.0 min at 90.0 km/h, Determine the average speed for the trip
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm . What is the acceleration of the object at t= 2.50 s ?
Consider an insulated enclosed volume of 27m^3 containing dry air at 23 degrees celsisus and 980mb, What is the specific volume and mass of the air sample
Calculate the gradient of V in each region
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