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A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 3.7 × 104 kg, and the force causes its speed to change from 7600 to 5500 m/s.
(a) What is the work done by the force?
(b) If the asteroid slows down over a distance of 2.4 × 106 m determine the magnitude of the force.
Consider a book of mass 10 kg on a frictionless incline that makes an angle of 40? with the horizontal. Find the acceleration of the book down the incline
The drawing shows two long, straight wires that are suspended from a ceiling. The mass per unit length of each wire is 0.047 kg/m. What is the current in each wire
Four point charges have the same magnitude of 2.53 x 10^-12 C and are fixed to the corners of a square that is 4.15 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exists ..
A wall consists of 2 layers of material: brick in front of an equal thickness of wood. how does the temperature gradient across the wood compare to the gradient across the brick
A 1.1 kg particle-like object moves in a plane with velocity components vx = 20 m/s and vy = 50 m/s, What is its angular momentum relative to the origin at this moment
An astronaut weighs 92.5 kg on earth. While floating in space he pushes the side of his spaceship with a force of 150 N for .20 seconds. Find the change of momentum of the astronaut
a 90kg box is pushed by a horizontal force F at a constant speed up a ramp inclined at 28 degrees. Determine the magnitude of the applied force
The spring constant for the tendon is the same for both groups, 32 {rm {N}/{mm}} . What is the difference in maximum stored energy between sprinters and nonathletes.
A small object with a mass of 333 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of the parallel-plate capacitor. The plates are separated by 2cm.
What is the density of Neon gas at standard temperature and pressure? The atomic mass of Neon is 20.18 atomic mass unit
A Michelson interferometer uses light from glowing hydrogen at 486.6nm. As you move one mirror, 555 bright fringes pass a fixed in the viewer
define the dielectric constant of the dielectric.
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