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An airplane is flying with velocity (152, 0) m/s. It is accelerated in the x direction by its propeller at 8.92 m/s2 and in the negative y direction by a strong downdraft at 1.21 m/s2. Obtain what is the airplane velocity after 3 seconds?
An AC generator supplies 15 amps at 440V to a 50,000V power line through a step-up transformer. how much money would the energy supplier save per month if electricity costs $0.12/kWh by stepping up the voltage
Suppose a distant world with surface gravity of 6.24 m/s^2 has an atmospheric pressure of 7.16 x 10^4 Pa at the surface. What force is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of a methane ocean
two very long coaxial conducting cylindrical shells have a potential difference 800 v. the inner cylinder has radius
A 0.75 mF capacitor is charged to 50 Volt. It is then connected in series with a 55 Ω resistor and a 110 Ω resistor and allowed to discharge completely. Obtain how much energy is dissipated by the 55 Ω resistor
A geologist finds that a Moon rock whose mass is 10.51 kg has an apparent mass of 6.28kg when submerged in water. What is the density of the rock
If energy were conserved in each collision, what would you expect the ratio of the total kinetic after the collision to the total kinetic energy before the collision to be? Are there anyof your collisions where energy is not conserved? Is this exp..
for each of the anatomical levers listed indentify the class of lever represented identify the fulcrum effort point and
A conducting rectangular loop of mass M, resistance R, and dimensions w by l falls from rest into a magnetic field. All through the time interval before the top edge of the loop reaches the field, the loop approaches a terminal speed vT.
a helicopter propeller blade starts from rest and experiences a constant angular acceleration of 14.5 rads2. find the
A capacitor that is initially uncharged is connected in series with a resistor and an emf source with E=110V, What is the resistance of the resistor
The radius of the earth's orbit around the sun (assumed to becircular) is 1.50 108 km,and the earth travels around this orbit in 365 days. What is the magnitude of the orbital velocity of the earth in m/s
A 2 kilogram box slides on a rough, horizontal surface, hits a spring with a speed of 2.20 meter per second and compresses it a distance of 11 centimeter before coming to rest. Evaluate what the force constant of the spring
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