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a bat can detect small objects such as an insect whose size is approximately equal to one wavelength of the sound the
a volume of saline solution weighed 256 g at 4 degrees celsius an equal volume of water at the same temperature weighed
a hydraulic lift has pistons with areas 060m2 and 530m2 and theyre at the same height with a 23kn force on the smaller
tsunamis are fast-moving waves often generated by underwater earthquakes in the deep ocean their amplitude is barely
a red ball with a velocity of 30 ms collides head-on with a yellow ball of equal mass moving with a velocity of -20 ms
flywheels are large massive wheels used to store energy they can be spun up slowly then the wheels energy can be
a student has built a 20-cm-long pinhole camera for a science fair project she wants to photograph the washington
what amount of naoh a strong base in mg would be required to neutralize 100 mg of h2so4 mw98 in 1 l of
two slits are 0168 mm apart a mixture of red light wavelength 664 nm and yellow-green light wavelength 568 nm falls
a 017- kg block on a wooden table is given a sharp blow with a hammer the block then slides across the table to a stop
a curling stone with a mass of 200 kg slides across the ice at 150 ms it collides head on with a stationary 0160-kg
the blood flow speed through an aorta with the radius 100 cm is 265 ms if the hardening of the arteries causes the
a modern engine of alloy construction consists of 24 kg of aluminum and 72 kg of iron how much heat does the engine
a beam of light is sent directly down onto a glass plate n 15 and a plastic plate n 12 that form a thin wedge of air
a 655-kg satellite is in a circular orbit about earth at a height above earth equal to earths mean radiusa find the
adisa pulls a 40-n crate up a 50-m long inclined plane at a constant velocity if the plane is inclined at an angle of
a block starts from rest at the top of a 35deg inclined plane and encounters a spring of constant 64 knm rigidly
a roller coaster car rolls down a frictionless track reaching speed v0 at the bottom if you want the car to go 5 times
tarzan swings on a 270 m long vine initially inclined at an angle of 330deg with the verticala what is his speed at the
the immediate cause of many deaths is ventricular fibrillation which is an uncoordinated quivering of the heart an
a 270-n sphere 020 m in radius rolls without slipping 60 m down a ramp that is inclined at 40deg with the horizontal
the normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a
a drum major twirls a 94 cm-long 430g baton about its center of mass at 150 rpm what is the batons rotational kinetic
light of wavelength 489 nm incident on a pair of slits produces an interference pattern on a distant screen in which
a bicycle is turned upside down while its owner repairs a flat tire on the rear wheel a friend spins the front wheel of