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An object is pulled west along a horizontal frictionless surface with a steady horizontal force of 12.0 N. If the object accelerates from rest to a velocity of 4.0m/s while moving 5.0m, what is the mass of the object?
An 78.0 N box is pulled21.0 m up a 30° incline by anapplied force of 101 N that pointsupward, parallel to the incline. calculate the change inthe kinetic energy of the box
The lows note emitted by stretched string has a frequency of 50Hz.how many outcome are possible between 40Hz and 170Hz.
A horizontal magnetic field of 2.0×10?4 T is at an angle of 25 to the direction of the current in a straight, horizontal wire 75 cm long. what is the magnitude of the force on the wire
question if the distance between two objects is doubled by how much should the mass of the first object increase
Superman must stop a 100km/h train in 150 m to keep it fromhitting a stalled car on the tracks. If the train's mass is3.6 x 10(to the 5th) kg, how much force must he exert
question two small plastic spheres each have a mass of 2.0 g and a charge of -50.0 nc. they are placed 2.0 cm apart.by
The position of a particle moving along an x axis is given by x = 22t2 - 3.0t3, where x is in meters and t is in seconds. Determine the position, velocity, and acceleration of the particle
You are piloting a spacecraft whose total mass is 1130 kg and attempting to dock with a space station in deep space. What is the initial thrust exerted on your spacecraft by the retro-rocket? What is the thrust's direction (positive if in the direc..
A near-sighted person might correct his vision by wearing diverging lenses with focal length f = -55cm. Use ray tracing to determine the height of the image
A 1.5-H inductor is connected in series with a 200-Ω resistor through a 15-V dc power supply and a switch, what is the maximum energy stored by the inductor
a 3.0-kg block is connected to two ideal horizontal springs having force constants k1 14.0nbspncm and k2 20.0 ncm see
A student drops a water ballon out a dorm window 12 m abovethe ground. What is its speed when it hits the ground
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