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A 9.8 kg board is wedged into a corner and held by a spring at a 50.0° angle, as the drawing shows. The spring has a spring constant of 208 N/m and is parallel to the floor. Find the amount by which the spring is stretched from its unstrained length.
Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 ? 108 m. Find the time it took for his voice to reach earth via radio waves
Two equally charged particles, held 4.7 × 10-3 m apart, are released from rest. The initial acceleration of the first particle is observed to be 7.2 m/s2, find the mass of the second particle
A circular coil of wire with 200 turns and a radius of 30 cm is laying flat on a horizontal wooden table. find the magnitude of the magnetic flux through the coil
Two identical launchers fire projectiles with the same initial velocity. One launcher is 3.54m above the ground and fires horizontally. what is the intial velocity of the projectiles
Babies recovering from surgery need to be fed milk from an open syringe through a nasogastric tube, a slender tube that passes in one nostril and down into their stomach
A pilot flies her route in two straight-line segments. The displacement vector A for the first segment has a magnitude of 242 km, find the directional angle
Two square, oppositely charged conducting plates measure 33 cm on each side. They are placed close together and parallel to each other. They have charges of +5.4 nC and -5.4 nC, respectively.
A train is travelling up a 3.2 degree incline at a speed of 3.55 m/s as the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
A small compass is held horizontally, the center of its needle a distance of 0.140 m directly north of a long wire that is perpendicular to the earth's surface, What direction does the current in the wire flow, toward or away from the earth's surfa..
Chiana is stalking a fly of mass 0.10 g, but the fly gets caught in a spider's web. What is the value of the effective spring stiffness constant k for the web
An unhappy rodent of mass 0.289kg , moving on the end of a spring with force constant 2.52N/m , is acted on by a damping force Fx=?b?vx. If the constant b has the value 0.894kg/s , what is the frequency of oscillation of the mouse
Two similar guitar strings have the same length and mass, but slightly different tensions, If the beat frequency is 1.5 Hz, what is the ratio of the tensions of the two strings
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