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A pitched ball is hit by a batter at a 45° angle and just clears the outfield fence, 98 m away. Suppose that the fence is at the same height as the pitch and find the velocity of the ball when it left the bat. Neglect air resistance.
Calculate the heat flow through a 0.500m long copper bar with a cross sectional area of 0.50 cm2. One end at 3.0 degrees Celsius and the other end at 100.0 degrees Celsius
A particle moves at a constant acceleration along the curve x2 = x1/100 from point A to point B. The velocity of the particle at A is 10 m/sec, and 10 sec later at point B it is traveling at 50 m/sec. Determine the total acceleration of the particle ..
Finally is the length is unchanged but the mass is equal to 0.500kg find the period T of the pendulum that is independent of the angle.
if the electric field inside a capacitor exceeds the dielectric strength of the dielectric between its plates the
A 2.0kg ball and a 4.5kg ball, each moving at 0.90m/s , undergo a head-on collision. How much mechanical energy was lost in this collision
q1. assume unpolarized light of intensity 197 wm2 falls on the polarizer in the figure and the angle in the drawing is
A golf ball hits a wall and bounces back at 1/4 the original speed. What part of the original kinetic energy of the ball did it lose in the collision
A coil with an inductance of 14.5 H and a resistance of R = 4.0 ohms is suddenly connected to a resistanceless battery with E = 184.2 V. What is the equilibrium current
a satellite of mass 500 kg is placed in an orbit of radius 5 times the radius of earth, i.e. the distance between the satellite, calculate the cetripetal force experienced by the satellite
A person can't see objects clearly that are closer than 80 cm. What is the refractive power of the contact lenses wouyld you prescribe
Size of the molecule (hydrodynamic radius) and degree of polymerisation (assuming the Kuhn length for PSS is 3 ° A) and viscosity of the concentrated solutions as a function of concentration - Calculate the sphere diameter by comparing the Stokes dra..
The horse on a carousel is 3.8 meter from the central axis. If the carousel rotates at 9.0×10-2rev/s, Compute how fast is a child on the horse going
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