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A rocket of mass 4.5 x 105 kg is accelerating straightup. Its engines produce an upward thrust of 7.5 x106 N, and the air resistance produces a force that isopposite the motion and magnitutde 2.4 x 106 N. Find the acceleration of the rocket.
A truck drives onto a loop detector and increases the downward component of the magnetic field within the loop from 1.2 x 10^- 5 T to the larger value B in 0.38 s. The detector is circular, has a radius of 0.67 m, and consists of three loops of wi..
A hollow, conducting spherical shell, of radius 3.50 cm, has charge ?9.14×10?5 C. What is the strength of the electric field 2.50 m from the center of the sphere, What is the direction of the field
The air velocity of an airplane is 188 km/hr at an angle of 26.0 degrees north of east. find the speed and direction of the wine
A star of radius 1 × 10^6 km rotates about its axis with a period of 48 days. Estimate the period of the neutron star
A grade school student plans to build a 31-power telescope as a science fair project. She starts with a magnifying glass with a focal length of 4.8cm as the eyepiece
All through an experiment, a block of wood with a mass of 250 g is placed on an inclined plane. While the plane is raised to an angle of 43o, the block slides down the plane at a constant speed.
How far apart would the two sphere. Uranium-238 (U238) has three more neutrons than uranium-235 (U235). Compared to the speed of sound in a bar of U235, is the speed of sound in a bar of U238 higher, lower, or the same? There are several factors ..
You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. If you catch the ball, with what speed do you and the ball move afterwards
Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.095 m, What is the radius of the second coil
At their closest approach, Venus & Earth are 4.20 x 10^10m apart. The mass of Venus is 4.87 x 10^24 kg, What is the force exerted by Venus on Earth
The ammonia molecule NH3 has a permanent electric dipole moment equal to 1.47 D, where 1 D = 1 debye unit = 3.34 x 10-30 C-m. find the electric potential in volts due to an ammonia molecule
a 25.0 mH inductor is in an AC-circuit with a 150 V ac-source which operates at 60.0Hz. find the inductive reactance
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