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a 10 kg test rocket is fired vertically. its fuel propels it to a heaight of 100 m, at which point the engine shuts off and the rocket has a kinetic energy of 1960 j. what additional height will the rocket rise given the kinetic energy?
A bullet of mass 11.4 g is fired into an initially stationary block and comes to rest in the block. Find the initial speed of the bullet
question a 1055 kg van stopped at a traffic light is hit directly in the rear by a 800 kg car traveling with a velocity
a parallel plate capacitor is immersed in sea water. find the ratio of rms conduction current to rms displacement
a 0.072m x 0.045 m steel beam of length 3.7m is heated from 293kelvin to 372kelvin. what is the new length of the beam?
Two point charges and are held in place 4.50 apart. Another point charge -2.5 of mass 6 is initially located 3.00 from each of these charges and released from rest. You observe that the initial acceleration of -2.50 is 354 upward, parallel to the ..
The voltage from a wall plug can be described by the equation V(t)=170sin[2π(60Hz)t] V. What would you read on a DMM reading AC voltage??
An audio amplifier provides an alternating rms potential difference of 15.0V. A loudspeaker connected to the amplifier has a resistance of 10.4 ohm. what is the rms current in the speaker
a 13 m ladder whose weight is 249 n is placed against a smooth vertical wall. a person whose weight is 959 n stands on
A 1500kg car slams the brakes on, its initial speed is 32m/s, How far does the car skid before stopping
A string is 80.0 cm long and has a mass per unit length of 5.51 × 10-4 kg/m. The tension in the string is 200 N. In the fundamental mode, at what frequency does the string vibrate? Answer A) 376 Hz B) 450 Hz C) 598 Hz D) 702 Hz E) 964 Hz
Two identical guitar strings are stretched with the same tension between supports that are not the same distance apart. The fundamental frequency of the higher-pitched string is 500Hz, and the speed of transverse waves in both wires is 125 m/s. How m..
An airplane wishes to fly from new york to ottawa. from new york, ottawa is located 780km West23degreesNorth. there is a wind blowing from a bearing of 310 degrees and if the plane flies at 890km/h, what bearing should the pilot steer to fly direc..
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