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A 0.5 kg dart is fired vertically from a spring gun that has spring constant of 4000 N/m. Prior to release the spring was compressed by 10.7 cm. When dart is 6.8m above the gun its upward speed is 28m/s. Determine maximum height reached by dart.
A highway is to be built between two towns, one of which lies 30.0 km south and 83.0 km west of the other. What is the shortest length of highway that can be built between the two towns, and at what angle would this highway be directed?
A pipe open only at one end has a fundamental frequency of 282Hz. A second pipe, initially identical to first pipe, is shortened by cutting off a portion of the open end.
A horizontal wire of length 0.50 m, carrying a current of 6.7 A, is placed in a uniform external magnetic field. When the wire is horizontal, Determine the magnitude of the external magnetic field
Refrigerant-134a enters a compressor at 180 kPa as a saturated vapour with a flow rate of 0.35 m3/min and leaves at 700 kPa. The power supplied to the refrigerant during compression process is 2.35 kW. What is the temperature R-134a at the exit of th..
An airplane travels x = 4.50 x 10^2 km due east and then travels an unknown distance y due north. Finally, it returns to its starting point by traveling a distance of r = 525 km. How far did the airplane travel in the northerly direction.
A proton travels with the speed of 8.34×105 m/s at an angle of 32.3° with the direction of a magnetic field. The field exerts a force of 3.00×10-17 N on the proton. What is the strength of the field.
What is mechanical energy dissipated by resistive forces
An airplane must reach a speed of 186mi/h to take off. If the runway is 488m long, what is the minimum value of acceleration that will allow the airplane to take off successfully.
The effects of the spin of the earth
A particular freely falling object requires 1.95 s to travel the last 33.5 m before it hits the ground. From what height above the ground did it fall.
The generator at a power plant produces AC at 29,000 V. A transformer steps this up to 305,000 V for transmission over power lines, how many turns must there be in the output coil
A particle with a mass of 4.10 × 10-20 kg is oscillating with simple harmonic motion with a period of 2.9 × 10-5 s and a maximum speed of 2.3 × 103 m/s.
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