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during a 65-ms interval a change in the current in a primary coil occurs this change leads to the appearance of a 43-ma
a child in a boat throws a 640kg package out horizontally with a speed of 100 ms calculate the velocity of the boat
a 150 kg box is pushed up an 800 m long frictionless incline inclined at an angle of 300 degrees above the horizontal
a solenoid of length 63 cm and diameter 088 cm is wound with 178 turns per cm the current is decreasing at a rate of
a bicycle whose tires have a diameter of 700 m accelerates from rest at a constant rate traveling a distance of 156 m
the resonant frequency of an rcl circuit is 10 khz and the value of the inductance is 70 mh what is the resonant
the power dissipated in a series rcl circuit is 563 w and the current is 0273 a the circuit is at resonance determine
an ac generator has a frequency of 90 khz and a voltage of 25 v when an inductor is connected between the terminals of
a spring-loaded catapult has a spring with spring constant 500 nm when loaded the spring is compressed a distance of
a certain type of laser emits light that has a frequency of 60 times 1014 hz the light however occurs as a series of
an airplane is flying due north at 180 ms the earths magnetic field has a northward component of 03 mt and an upward
on a cloudless day the sunlight that reaches the surface of the earth has an intensity of about 15 times 103 wm2 what
a magnetic field is perpendicular to the plane of a single-turn circular coil the magnitude of the field is changing so
a fan is running at 898 rpm when the power goes out it makes 1311 complete revolutions before it finally stops what was
a sound source approximated as a point radiates sound equally in all directions at a distance of 52 m from the source
a car in an amusement park roller coaster ride rolls without friction at the top of a hill the car begins at a height h
a 55-kg box rests on a horizontal surface the coefficient of static friction between the box and the surface is 030 a
in figure a a 46 kg dog stands on a 20 kg flatboat at distance d 61 m from the shore it walks 22 m along the boat
a composite slab with dimensions d1 91 cm d2 230 cm and d3 135 cm half the slab consists of aluminum density 270
unpolarized white light is incident on a polarizer and then falls on an analyzer whose ta transmission axis makes an
according to a report on traumatic brain injury the force that a professional boxers fist exerts on his opponents head
a sinusoidal electromagnetic wave having a magnetic field of amplitude 105 and a wavelength of 442 is traveling in the
electromagnetic wave 1 has a maximum electric field of 56vm and electromagnetic wave 2 has a maximum magnetic field of
a crate is pushed along a flat surface at constant velocity by a force of 68 n the coefficient of kinetic friction is
an earth satellite moves in a circular orbit with an orbital speed of 6300 msa find the time of one revolution of the