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The motion of a very massive object is hardly affected by what would seem to be a substantial force. Consider a supertanker, with a mass of 2.7×10^8 kg. If it is pushed by a rocket motor (thrust force of a rocket motor is 5.0 x10^6 N) and is subject to no other forces, what will be the magnitude of its acceleration?
A 6 kg block slides along a frictionless horizontal surface. The block is acted on by two forces, a 4.5 N force to the left, and a 7.5 N force to the right. At what rate is the 4.5 N force doing work on the block at the instant when its speed is 4..
a damped harmonic oscillator involves a block (m=2kg) ,a spring (k=10N/m)and a damping force F=-rv. How much energy is lost during these five cycles
Suppose one gallon of gasoline produces 1.1 × 108 J of energy, and this energy is sufficient to operate a car for twenty miles. how many miles could the car go with that energy
A monatomic ideal gas containing 7.95 moles at a temperature of 235 K are expanded isothermally from a volume of 1.23 L to a volume of 4.44 L. Calculate the heat flow into or out of the gas
Two 4.9 cm× 4.9 cm metal plates are separated by a 0.19-mm-thick piece of Teflon. What is the maximum potential difference between the disks
The electric field lines on the left have twice the separation of those on the right. If the magnitude of field at point-A is 60 V/m, what is the magnitude of the field at point-B.
a spherical void of radius r has cut inside the sphere, find the electric field inside the void if its center is displaced by vector R
Using a map of the United States we find that Atlanta, GA is in a direction north of east from Dallas, TX. What is the displacement from Dallas to Chicago
In this problem you will consider the balance of thermal energy radiated and absorbed by a person. Find the net power radiated by the person when in a room with temperature . Express the net radiated power numerically, to the nearest 10 W
A compact disk spins with angular velocity 40.8rad/s. The player is turned off, and 2.10s later the CD has stopped. Find its average angular acceleration
Assume the sound speed in air is 343 m/s. A parachutist leaps from a hovering helicopter and after 3.1s of free fall shouts back toward the helicopter
The position of an object as a function of time is given by x = At2 - Bt + C, Find the instantaneous velocity and acceleration as functions of time
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