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The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=59600 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical.
(a) What is the magnitude of the lift force?
(b) Determine the magnitude of the air resistance R that opposes the motion.
What is the new frequency of the string that was tightened. find the magnitude of the net force acting on the car during this time.
To which, according to the rotational analog of Newton's second law, is the angular acceleration experienced by an object directly proportional?
A spider has a mass of 0.70-g and is hanging from rest on a 20-cm long thread of 0.0020-mm diameter of silk, If the string is whirled in a circle at a rate of 2 revolutions per second, what is the minimum and maximum time for vibrational information..
The vector is 3.5 long and is directed into this page. Vector points from the lower-right corner of this page to the upper-left corner of this page and has components -19.5, 25.
A sinusoidal transverse wave travels along a long stretched string, What is the shortest transverse distance between a maximum and a minimum of the wave
The force of gravity acting on the arm acts through point A. Identify the magnitudes of the tension force t in the deltoid muscle and the force s of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown.
How many joules of kinetic energy does a 750 automobile traveling at a typical highway speed of 65 have.
A 1000kg truck is driving up a 10 degree slope. A 10g ornament hangs by a massless string from the rear-view mirror in truck.
A proton has a mass of 1.67 x 10^-27 kg and a charge of 1.60 x 10^-19 C. What is the gravitational force on a single proton at Earth's surface.
The acceleration of a certain simple harmonic oscillator is given by a = - (15.8 m/s2) cos (2.51t). What is the amplitude of simple harmonic motion.
compute how much charge must be placed on the surface of a sphere of radius 0.31 m for the electric potential just above the surface to be 100 V. Assume that the charge is uniformly distributed.
A charge of -3.55 nC and a charge of -5.65 nC are unconnected by a distance of 60.0 cm. Find the position at which a third charge of +7.20 nC can be located so that the net electrostatic force on it is zero.
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