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an ambulance is generating a siren sound at a frequency of 1800 hz the velocity of sound is 3350 ms the observer is
a 160 kg ball and a 720 kg ball are connected by an 800 cm long massless rigid rod the structure rotates about its
a frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal it is 32 meters long and 16
a 1500kg satellite is placed in an orbit 8000km above the surface of the earth a what is the gravitational acceleration
a rocket is fired straight up and accelerates upward at 12 ms2 for 18 seconds the rocket then runs out of fuel and
a bowling ball mass 72 kg radius 011 m and a billiard ball mass 038 kg radius 0028 m may each be treated as uniform
when playing a fortissimo very loudly a trumpet emits sound energy at rate of 0738 w out of a bellopening of diameter
hoursehoe bats use the doppler effect to determine their location a horsehoe bat flies towards a wall at a speed of 160
a duck is floating on a lake with30of its volume beneath the water what is the average density of the
the hamiltonian of a system of two spin- 12 electrons h 1z12z2 where z is the pauli matrix is an energy parameter and
an ideal monatomic gas is held in a well insulated container with a piston so that no heat is transferred to and from
a baggage handler drops your 870 suitcase onto a conveyor belt running at 160 the materials are such that 0560 and
a 0580kg glider on an air track is attached to the end of an ideal spring with force constant 458 nm it undergoes
an alpha particle is a nucleus of helium it has twice the charge and four times the mass of the proton when they were
a uniform meter stick is at rotational equilibrium when a mass 200 g is suspended at the 5 cm mark a mass of 150 g is
suppose the meter stick made an angle of 20 with the horizontal the 0 mark above and the 100 cm mark below the
suppose a certain jet plane creates an intensity level of 115 db at a distance of 594 m what intensity level does it
a 40-g block of ice is cooled to 70degc and is then added to 590 g of water in an 80-g copper calorimeter at a
when an electron moving through air has 5 mev of energy what is the ratio of the rates of energy loss by bremsstrahlung
a carnot engine operates with a cold reservoir temperature of 194 k and has an efficiency of 743 a what is the
an ice cube of mass 0018 kg at the temperature of the freezing point of water is surrounded by water at a temperature
the earth has a radius of 638 times 106 m and is 149 times 1011 meters from the sun if the intensity of solar
nbsp100-kohm resistor a 0200-h inductor and a 400-microf capacitor are connected in series with an ac generator the emf
a resistor with r 40 kohm is placed in series with a 240 v battery an open switch and an inductor having l 360 mh at
a uniform rod of length l1 19 m and mass m 30 kg is supported by a hinge at one end and is free to rotate in the