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a 100 kg bomb is at rest it explodes into two chunks one piece of mass300 kg goes east at 100 ms what is the speed of
one gallon of gasoline releases approximately 10 108 j when it is burned ie undergoes combustion in a car engine if the
a 400kg baby grand piano is raised to the roof of a 100m building if the cable breaks as it reaches this height what
the low temperature in a freezer is -20 c and the discharge temperature is 35 c what is the maximum theoretical
a 3 kg cylinder falls vertically from rest in a very tall evacuated tube 20 m above the surface of the earth what is
a person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 329 db
a dog runs down a driveway with initial speed of 5 ms for 8s then uniformly increases his speed to 10 ms in 5 s what
a loudspeaker is placed between two observers who are 115 m apart along the line connecting them if one observer
a supersonic aircraft is flying parallel to the ground when the aircraft is directly overhead an observer on the ground
a sausage slides along the 60 degree incline with a constant velocity te mass of the sausage is 035 kg if the height of
a quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 220 ms the ball is
suppose the scale of a crown read 784 n in air and 684 n in water gold density 193 gcm3afind the buoyant forceb find
a jet of water squirts out horizontally from a hole near the bottom of the tank shown in the figure below if the hole
a capacitor with 10 microfarad capacitance is connected in series with a resistor of 25 mega-ohms if this capacitor is
an aluminum calorimeter with a mass of 100 g contains 250 g of water the calorimeter and water are in thermal
a sprinterexplodes out of the starting block with an acceleration of214 ms2 which she sustains for 126 sthen her
a mass hanging at rest froma spring stretches the spring by 400 cm the mass is thenpullednbspdown until the spring is
a 3-microfarad capacitor is connected in series with a 2 micro-farad capacitor and a 15 volt battery what is the
solid argon has a density of 1650 kgm3 the atomic weight of argon is 40 assuming each atom occupies a cubical volume
the rotation spectrum of the hcl molecule has been observed in the far infrared around 50 10-6 m the spacing between
the drawing shows two situations in which charges are placed onthe x and y axes they areall located at the same
two balls of radius 200 mm have a separation between theircenters of 533 cm the same electric charge is placed on
a mad scientist is designing a trap for intruders that will liftthem up into the air and hold them helpless the device
two identical point charges are fixed to diagonally oppositecorners of a square that is 28 m on aside each charge is 35
a disk of radius r carries an amount charge quniformly distributed over its surface be able to find a vectorexpression