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A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.32. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the horizontal direction when the box begins to slide down the board?
During a long airport layover, a physicist father and his 8-year-old daughter try a game that involves a moving walkway. With what speed was the girl walking
The primary coil of an ideal transformer has 650 turns, and the secondary coil has 260 turns. Assume the primary coil carries 15 A at a voltage of 120 V. What is the output current of the secondary coil
A 0.800 kg projectile is launched from the edge of a cliff with an initial kinetic energy of 1875 J and at its highest point is 211.2 m above the launch point. find the vertical component of its velocity just after launch
The mass of a string is 1.00 10-3 kg, and it is stretched so the tension in it is 120 N. What is the length of the string
An object is dropped from rest from a height of 4.36E+6 m above the surface of the earth. If there is no air resistance, what is its speed when it strikes the earth
One end of an insulated metal rod is maintained at 100 and the other end is maintained at 0.00 by an ice-water mixture. Find the thermal conductivity of the metal
Bill is flying an airplane with air speed 30.0 m/s. going south. Mike is on the ground and sees the plane traveling 25.0 m/s, 15 degrees east of south. What is the component of the wind's velocity to the north
A heavy box is pulled across a wooden floor with a rope. The rope makes an angle of 60o with the floor. A force of 75N is exerted on the rope. find the component of the force parallel to the floor
the potential energy of two atoms in a molecule can be approximated by the morse functionuraer-rs-12 -1nbspwhere r is
Here is the data found: This is OHM'S LAW experiment Trial Voltage Current Resistance, What is the uncertainty of this measurement
A box slides down a 25° ramp with an acceleration of 1.070m/s2. Resolve the coefficient of kinetic friction between box and ramp.
A beam of 16MeV deuterons (m=2mp) from a cyclotron falls on a copper block. The beam is equivalent to a current of 15 microA, At what rate do deuterons strike the block
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