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A copper wire 5m long is cooled from 40C to -9C. How much change in the length does it experience?
a dog running in an open field has components of velocity vx 3.2ms and vy -1.6 at time t 10.4s . for the time interval
An inelastic collision occurs in one dimension, in which a 10 kg block travelling at 5 m/s collides with a 5 kg block travelling at 3 m/s in the same direction, and they stick together. What are the velocities of the blocks immediately after the c..
question 1 what is the resistance of 5.8 mi of copper wire with a diameter of 0.53 mm?question 2 a 75v- generator
A particle travels horizontally between two parallel walls separated by 18.4 m. It moves toward the opposing wall at a constant rate of 7.7 m/s. What will be its speed when it hits the opposing wall
An aircraft weighing 865 Newton is accelerated at 12 m/s2 for 12 s, at which time the aircraft launches. Calculate how much work was done on the aircraft
Pellets of mass 1.0g are fired in parallel paths with speeds of 130m/s through a hole 3.5mm in diameter. How far from the hole must you be to detect a 1.0-cm-diameter spread in the beam of pellets?
A 0.900 kg block is attached to a spring with spring constant 18 N/m. What is the amplitude of the subsequent oscillations
An airplane releases a ball as it flies parallel to the ground at a height of 145 m as shown in the figure. If the ball lands on the ground exactly 145 m from the release point, calculate the speed v of the plane. Neglect any effects due to air resis..
A 3.00kg mass and a 5.00kg mass hang vertically at opposite ends of a rope that goes over an ideal pulley. what is the magnitude of the acceleration of the masses
Use the energy method to find Vb. Calculate Tension T at the bottom most point.
A 10 centimeter long thin glass rod uniformly charged to +10nC and a 10 centimeter thin plastic rod uniformly charged to -10nC are located side by side, 4.0 centimeter apart. Find what are the electric field strengths E1 to E3
In a thin film experiment, a wedge of air is used between two glass plates. how much thicker is the air wedge at the 16th dark fringe than it is the 6th
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