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q1 a student calculates the frequency of a waveform produced through a tuning fork to be 303 hz if the tuning fork is stamped with the frequency of
q1 the current in a coil changes from 380 a to 190 a in the same direction in 0510 s if the average emf induced in the coil is 140 mv what is the
q1 the rate of energy use in a typical house is about 2 kw if the kinetic energy of a car mass 1456 kg is equal to the total energy used by the house
q1 an electron moves through a uniform magnetic field given by bx 300 bx at a particular instant the electron has velocity 126485 ms and the
q1 a car with a mass 1865 kg is travelling west and slows down uniformly to 85 ms over a distance of 108 m calculate the initial speed of the car if
q1 a violin string that is 455 cm long has a fundamental frequency of 490 hzwhat is the speed of the waves on this stringq2 a childs toy consists of
q1 a person exerts a horizontal force of f 175 n in the test apparatus shown in the drawing h 025 m find the horizontal force m that his flexor
q1 diffraction also occurs with sound waves consider 1900-hz sound waves diffracted by a door that is 87 cm wide what is the angle between the two
q1 a spring with spring constant 14 hangs from the ceiling a ball is attached to the spring and allowed to come to rest it is then pulled down 30 and
q1 over a 30-day period a power plant generates an average of 751 mw of electrical power and 1225 mw of waste heat and burns 183times108 kg of coal
q1 you bring a 350-g wrench into the house from your car the house is 15 c warmer than the car and it takes 252 kj of energy to warm the wrench by
q1 a thin layer of magnesium fluoride n 138 is used to coat a flint-glass lens n 161 what minimum thickness must the magnesium fluoride film have
q1 a box of mass 32 kg is at rest on a horizontal frictionless surface a constant horizontal force then acts on the box and accelerates it to the
q1 an archer shoots an arrow with a velocity of 450ms at an angel of 500 with the horizontal an assistant standing on the level ground 150m downrange
q1 a crate with mass 355 initially at rest on a warehouse floor is acted on by a net horizontal force of 120 what acceleration is producedq2 a 1800
q1 a weather vane at first at rest has a moment of inertia of 0111 kg bull m2 about its axis of rotation a 530 g piece of clay is thrown at the vane
q1 the flywheel of an engine has a moment of inertia 280 rm kg cdot rm m 2 about its rotation axis what is its final kinetic energyq2 a cord is
q in a youngs interference experiment the two slits are separated by 017 mm and the incident light includes two wavelengths lambda1 540 nm green and
q1 tarzan m 75 kg tries to cross a river by swinging from an 110 m long vine his speed at the bottom of the swing just as he clears the water is 50
q1 a flight attendant pulls her 66 n flight bag a distance of 381 m along a level airport floor at a constant velocity the force she exerts is 35 n
q1 a 75-kg person sits on a 37-kg chair each leg of the chair makes contact with the floor in a circle that is 15 cm in diameter find the pressure
q1 a test rocket is launched by accelerating it along a 2000-rm m incline at 157 rm ms2 starting from rest at point a the incline rises at 350 circ
q1 what mass in grams of steam at 100degc should be mixed with 257 g of ice at its melting point in the thermally insulated container to produce
q1 a rightward force of 302 n is applied to a 289 kg crate to accelerate it across the floor the coefficient of friction between the crate and the
q1 a standardized biological microscope has an 80--focal-length objective what focal-length eyepiece should be used to achieve a total magnification