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A nearsighted patient's far point is 0.645 m from her eyes. She is able to see distant objects in focus when wearing glasses by a refractive power of -1.6 diopters. What is the distance among her eyes and the glasses?
Children sled down a 45m -long hill inclined at 26?. At the bottom, the slope levels out. how far do the children slide on the level ground?
in this assignment you will apply key concepts covered in the module readings. you will identify the component parts
A man is pushing a heavy box across the floor. The box weighs 95 lbs. The man is pushing forward on it with a force of 56 lbs. What is the resultant horizontal force on the box
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 83.7 N, Jill pulls with 91.9 N in the northeast direction, Find the magnitude of the net force the people exert on the donkey
an astronaut weighs 150 lbs on the surface of the earth. what does she weigh if she is resting in the space shuttle
The frequency of a tuning fork is 358 Hz. Find the length of the shortest organ pipe which will give 6 beats/s with the fork. The velocity of sound in air is 339.1 m/s.
When 215 g of a substance is heated to 330degrees Celcius andthen plunged into a 100-g aluminum calorimeter cup containing 150 gof water at 12.5degrees celcius, What is the specific heat of the substance
A 50.0-kg child on a 2.0 m long swing is released from rest when the swing supports make an angle of 30 degrees with the vertical. find the potential and kinetic energies of the child
A car initially traveling at 23.2 m/s undergoes a constant negative acceleration of magnitude 2.10 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the ..
A long, uniform rope with amass of 0.130 kg per meter lies on the ground. You grab oneend of the rope and lift it at the constant rate of 1.40m/s.Calculate the upward force you must exert at the moment when the top end of the rope is 0.510m above the..
An unstable particle produced in a high-energy collision is measured to have an energy of 483 MeV and an uncertainty in energy of 84 keV. Use the Heisenberg uncertainty principle to estimate the lifetime of this particle.
Standing at the edge of a cliff 33.5 m high, you drop a ball. Later, you throw a second ball downward with an initial speed of 12.7 m/s. What is the increase in speed of the second ball
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