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A block of mass 3.1 kilogram rests on a frictionless inclined plane, held in place by a string of mass 0.023 kilogram. The angle of the plane from the horizontal is 32 degree, and the string length is1.5 meter. Determine how long does it take a wave to travel from one end of the string to the other? Note: Since the string is so much less massive than the block, the mass of the string can be neglected when calculating its tension.
In a tennis serve, a 0.073-kg ball can be accelerated from rest to 41 m/s over a distance of 0.95 m. Find the magnitude of the average force exerted by the racket
A hydraulic jack is made by a small piston 1.3 cm in diameter that is utilized to move a large piston 6.1 cm in diameter. If a man can exert a force of 360 N on the small piston, how heavy a load can he lift by the jack?
A dentist utilizes a mirror to examine a tooth that is 1.25 cm in front of the mirror. The image of the tooth is formed 5.0 cm behind the mirror. Decide the mirror's radius of curvature.
algebracially prove thata b a c b c a b a b c a bno truth table is
An 80kg fighter pilot flying anf-22 jet moving at 95 m/s makes the plane do a back flip keeping aconstant velocity. The radius of the flip was 200meters. What is the fighter pilots apparent weight at the topof the loop?
An 78.0 N box is pulled21.0 m up a 30° incline by anapplied force of 101 N that pointsupward, parallel to the incline. calculate the change inthe kinetic energy of the box
A petite young woman distributes her 540N weight equally over the heels of her high-heeled shoes. Each heel has an area of 0.850 cm^2, What pressure is exerted on the floor by each heel
If a simple pendulum with length 1.5m makes 72 oscillations in 180 s, what is the acceleration of gravity at its location
An object is placed 11.1 cm in front of the cornea. (The cornea is thin ans has approximately parallel sides so that the reflection that occurs as light travels from air to cornea to aqueous humor is essentially the same as though the aqueous humo..
After flying for 15 min in a wind blowing 42 km/h at an angle of22°south of east, What is the speed of the airplane relative to the air
A beam of blue light of wavelength 500 nm has an intensity of 170 W/m^2, How many photoelectrons are emitted from the potassium plate per second
Two newly discovered planets follow circular orbits around a starin a distant part of the galaxy. The orbital speeds of the planetsare determined to be 44.3 km/s and 60.5 km/s. The slower planet'sorbital period is 7.03 years.
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