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A 2.0kg block is projected down a plane that builds an angle of 20 degree with the horizontal with an initial kinetic energy of 2.0J.If the coefficient of kinetic friction among the block and plane is 0.40, how far (in meter) will the block slide down the plane before coming to rest?
if you look at yourself in shiny christmas tree ball with a diameter of 9.0 cm when you face is 30.0cm away from it
A rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. Calculate the final speed of the wire
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and kno..
Two pianos each sound the same note simultaneously, but they are both out of tune. How much time separates successive beats
A mass m of a metal with heat capacity cm at initial temperature TM is added to the volume V of a liquid with density p, find the final temperature of the system
An object undergoing simple harmonic motion takes 0.34 s to travel from one point of zero velocity to the next such point. The distance between those points is 40 cm. Calculate the frequency of the motion
A helium-neon laser of the type often found in physics laboratories has a beam power of 4.00 mW at a wavelength of 633 nm. Calculate the intensity of the focused beam
Two 4.4 cm× 4.4 cm metal plates are separated by a 0.19-mm-thick piece of Teflon, What is the maximum potential difference between the disks
A large fake cookie sliding on a horizontal surface is attached toone end of a horizontal spring with springconstant k = 440 N/m; What will be the kinetic energy of the cookie as it slides back through the equilibrium position
Neglect air resitance. Find rocket's kinetic energy when the rocket is 1000 km above Earth's surface. Illustrate what is the max heigh that the rocket reaches.
What is the separation between the two atoms in this molecule if we model them as point masses? The mass of hydrogen is 1.67* 10^-27 kg and nitrogen is 2.33*10^-26 kg
an object is 1m from a screen. at what points may a 0.05-m focal length lens be placed so as to produce a sharp image
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