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A block is projected up a frictionless inclined plane with initial speed v0 = 3.56 m/s. The angle of incline is θ = 31.8 degree.
(a) Determine how far up the plane does the block go?
________m
(b) Determine how long does it take to get there?
_______ s
(c) Find its speed when it gets back to the bottom?
_____m/s
A 1300-{rm kg} car rolling on a horizontal surface has speed v = 50 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.7 m. Illustrate what is the spring stiffness constant of the spring?
An object has an angular size of 0.0150 rad when placed at the near point (21.0 cm) of an eye. When the eye views this object using a magnifying glass, the largest possible angular size of the image is 0.0380 rad. What is the focal length of the magn..
A 2.7-kg box is released on a horizontalsurface with an initial speed of 2.9 m/s. Calculate the kinetic friction force on the box
When the eye looks at a star (a point of light), diffraction at the pupil spreads the image of the start on the retina into a small disk, What is the linear size of the image of the start on the retina
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.11kg, and the wedge has a mass of 5.39 kg. The ball is moving the speed of v = 4.45m/s when it strikes the wedge, which is initially at rest.
A woman lies on a weightless board across two scales. Her feet are directly over the right scale. How far above her feet is her center of mass
A small fly of mass 0.27g is caught in a spider's web. The web vibrates predominately with a frequency of 3.2Hz. At what frequency would you expect the web to vibrate
A tuning fork produces a steady 400 Hz tone. When this tuning fork is struck and held near a vibrating guitar string, What are the possible frequencies produced by the guitar string
A sand mover at a quarry lifts 2.00E3 kg of sand per minute averticle distance of 12.0 m. What is the minimum power that must besupplied to this machine
a child and sled with a combined mass of 48.6 kg slide down a frictionless hill that is 8.94 m high. if the sled starts
a magnetic field is oriented at an angle of 39? to the normal of a rectangular area 4.8cm by 7.7cm if the magnetic flux
A series RCL circuit has a resonant frequency of 2200 Hz. When operating at a frequency other than 2200 Hz, the circuit has acapacitive reactance of 5.50 ohms and an inductive reactanceof 35.0 ohms.
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