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A step-down transformer is used for recharging the batteries of portable devices. The turns ratio N2/N1 for a particular transformer used in a CD player is 9:42. When used with 120 V (rms) household service, the transformer draws an rms current of300 mA. Find the following
(a) rms output voltage of the transformer
V
(b) power delivered to the CD player
W
a 2.0 nc charge is placed on the x-axis at x=-3.0cm another 2.0nc charge is placed on the x-axis at x=3.0cm, What is the potential at the origin
The aorta carries blood away from the heart at a speed of about 40 cm/s and has a radius of approximately 1.1 cm. determine the approximate number of capillaries in the human body
The drive propeller of a ship starts from rest and accelerates at 2.50 x 10-3 rad/s2 for 2.15 x 103 s. find the total angular displacement of the propeller
A transverse wave on a string is described by the following wave function. y =0.085 sin((pie/12x) +(5piet)), What is the speed of propagation of this wave
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a highest of 90.0 cm, what was the speed of the bullet at impact with the block.
Using the medium p model of the line, Find the current, voltage, reactive power, real power, & power factor at the sending end of the line.
A uniform rod of mass 3.05×10^-2?2kg and length 0.370m rotates in a horizontal plane about a fixed axis through its center, compute the angular speed of the rod after the rings leave it
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
A child sits on the edge of a spinning merry-go-round that has a radius of 2.2 m. The child's speed is 4 m/s. What is the child's acceleration
The mass density of an object is 16.0 g/cc, and its mass is determined to be 134 g. What is the volume of the object
At rest when constructed, the ring is set rotating about its axis so that the people inside experience effective free-fall acceleration equal to g. The rotation is achieved by firing two small rockets attached tangentially to opposite points on the r..
what is the kinetic energy of a ball of mass 16.1 kg at the apex (highest point) of its trajectory, if it is thrown with an initial speed of 45 mph
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