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a 760 kg light weight helicopter ascends from the ground with an acceleration of 2.5m/s^2. Over a 6 second interval, what is the work done by the lifting force?
Find the lowest energy of the system (in electron volts) and list the quantum numbers of all occupied states. Find when the current in the solenoid increases to 5.0 A in a period of 0.90 s.
It was a rainy day and the coefficient of friction was estimated to be 0.42. Use these data to determine the speed of the car while the driver slammed on (and locked) the brakes.
The process is claimed to produce 2000 J/min of work and to require an undisclosed amount of heat transfer with a heat reservoir at 300 K. Should inventor be issued a patent of this device.
A diffraction grating with groove spacing of 2 microns is used to observe the balmer series in hydrogen, At what angle will the first order cyan line appear
An electric motor has a 840-turn coil on its armature. The coil is circular with diameter 17cmand carries 10.0A, ind the maximum torque on the coil when it rotates in a 1.20T magnetic fiel
A very large number (N+1) polaroids are arranged in a sandwich, The transmission axis of each polaroid is at a constant angle, with respect to its predecessor
A proton is initially at rest at a point where the potential is 455V. Sometime later the proton is at a point where the potential is 191V. If no force but the electrostatic force acts on the proton, what is its final kinetic energy.
A 4000 kg lunar lander is in orbit 50 km above the surface of the moon. How much work must the thrusters do
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is ? = 3.00 10-7 C/m2, and the plates are separated by a distance of 2.9 10-2 m. How fast is the electron moving just bef..
Find tension in the back muscle and the compressional force
At a pressure of 0.0760 atm a constant-volume ideal gas thermometer reads a temperature of 345 K. What is the thermometer's triple point pressure, Pt
Three liquids are at temperatures of 5.0°C, 21°C, and 33°C, respectively. Equal masses of the first two liquids are mixed, Find the equilibrium temperature when equal masses of the first and third are mixed
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