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water at a pressure of 4 atm at street level flows into a building at 05 ms through a 6 cm diameter pipe the pipe
a 1500 kg car on a hydrolic lift rests on a cylinder with a piston of radius 020m if a connecting cylinder with a
a golf ball traveling 3 ms to the right has a head-on with astationary bowling ball in a friction-free environment if
salt water has a greater density than freshwater a boat floats in both freshwater and saltwater the buoyant force on
a soccer ball with mass 0242 kg is initially at rest and is kicked at an angle of 290deg with respect to the horizontal
the magnetic force exerted on a 13 -m segment of straight wire is 16 n the wire carries a current of 31 a in a region
a us 20 gold piece has a mass of 3344g and displaces 1935cm3 of water if the coin is known to consist of only gold
a cylinder contains a mixture of helium ans argon gas inequlibrium at a temperature of 150 degreesa what is the average
in the high jump the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of
a helicopter is using a steel cable to lift a 2200 kg jeep the unstretched length of the cable is 12m and its radius is
an 193kg box is released on a 361o incline and accelerates down the incline at 0276ms2 what is the magnitude of the
a sound wave from a siren has an intensity of 1089 wm2 at a certain point and a second sound wave from a nearby
a block oscillating on a spring has period t 20sa what is the period if the blocks mass is doubledexplainb what is the
an object is undergoing simple harmonic motion with a maximum speed of 693 ms and the maximum acceleration of 52 ms2
suppose a 175-kg motorcycle has two wheels and is heading toward a hill at a speed of 300 ms assume the wheels to be
a 350g bullet moving at 475 ms strikes a 25kg bag of flourthat is on ice at rest the bullet passes through the bag
at a distance of 70 km from a radio transmitter the amplitude of the radiated electric field of the radio transmissions
two identical resistors are connected in parallel across a 23vbattery which supplies them with a total power of 87w
a police radar has an effective range of 15km while a motorists radar detector has a range of 20kmnbsp the motorist is
a block of copper of mass 500g and initially at 293k is in isothermal contact with an electric heater of resistance
according to charless law for a fixed quantity of gas at constant pressure which of the given quantities is
the electric potential energy stored in the capacitor of adefibrillator is 65 j and the capacitanceis 137 microf what
at 20deg c an aqueous solution that is 240 by mass in phosphorus pentachloride has density of 21 gcm3 assume 100 g
calculate the boiling point of a solution containing 500 g of kcl and 5500 g of water kb for water is
a resistor and an inductor are connected in series across an ac voltage source oscillating at 60 hz the rms voltage