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Question1
A blocks slides all along a track that descends through distance h. The track is frictionless except for the lower section. There block slides to a stop in an assured distance D because of friction.
(a) If we decrease h, will the block now slide to a stop in a distance that is greater than, less than, or identical to D?
(b) If, in-stead, we increase the mass of the block, will the stopping distance now be greater than, less than, or identical to D?
Question2
A point charge q1=4.00 nC is located on the x-axis=2.00m.A second point charge,q2=-6.00 nC is on y-axis at y=1.00m. What is the total flux because of these two point charges through a spherical surface centered at the origin and with a radius of?
a)0.500m,
b)1.50m and
c) 2.50m.
The diameter of the aluminum cylinder is measured to be: (4.935 ±0.003)cm. The hanging mass (paint bucket and 5kg) for a Mechanical Equivalent of Heat experiment is recorded as (5.2977 ±0.0002)kg. Calculate the work done cranking the aluminum cylin..
A real 90 v battery (one with internal resistance) has a terminal voltage of 80 v when a motor with a resistance of 8 omega is connected to it. how large is the batterys internal resistance
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If a cube of a certain metal increases its volume from 15 cm3 to 17 cm3 as the temperature increases from 12°C to 28°C
A thin, hollow 60.0 g section of pipe of radius 15.0 cm starts rolling (from rest) down a 18.5° incline 5.40 m long. What will be its total kinetic energy at the base of the incline
Periodic signals from three pulsars reach the Earth. Signals from the first pulsar, denoted A, have a frequency of 400 Hz and come from a direction 10 degrees away from the direction of the galactic center.
there are 4 charges located on the corners of a square of side d. q1(top left = +1q) q2(top right= -1q), compute the electric potential at the center of the square
A potter's wheel having a radius 0.49 m and a moment of inertia 10.9 kg·m2 is rotating freely at 52 rev/min. Find the effective coefficient of kinetic friction between the wheel and the wet rag
A 21 kg block on a horizontal surface is attached to a horizontal spring of spring constant k = 2.3 kN/m, What is the kinetic energy of the block when it has moved 2.0 cm from its point of release
Two thin lenses with a focal length of magnitude 12.0cm , the first diverging and the second converging, are located 9.00cm apart. What is the height of the final image
The first-order principal maximum produced by a grating is located at an angle of ? = 15.0 degrees. What is the angle for the third-order maximum
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