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A merry-go-round spins without friction. The merry-go-round is a circular disk of mass M and radius R, and that it is initially spinning with an angular velocity ω0. Snow begins to fall at a constant rate of r kg/sec. Find an expression for the angular velocity of the merry-go-round as a function of time.
Two periodic waves interfere somehow. Both waves have the same frequency and wavelength. what is the range of amplitue of the resulting wave
A person whose eyes are H = 1.64 m above the floor stands L = 2.3 m in front of a vertical plane mirror whose bottom edge is 38 cm above the floor. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point o..
A silver rod and a common glass rod both have the same length when at 20.0°C. The silver rod is heated to 52.3°C. To what temperature must the glass rod be heated so that they are again at the same length?
A plane accelerates from rest at a constant rate of 5.00m/s2 along a runway that is 1800m long. What is the time tTO needed to take off
Nichrome is a nickel chromium allot commonly used in heating elements. suppose you have a coil of nichrome wire that is 25.0 m long, what is the resistance of the Nichrome wire
A 0.60kg sphere rotates around a vertical shaft supported by 2 strings. If the tension in the upper string is 18N, calculate the tension in the lower string
A particular guitar string is supposed to vibrate at 214 Hz, but it is measured to actually vibrate at 272 Hz. By what percentage must the tension in string be changed to get the frequency to the accurate value.
A ring of diameter 11.00 cm is fixed in place and carries a charge of +5.00 µC uniformly spread over its circumference. What is the maximum speed it will reach
You have a spring attached to the bottom of a container. The spring is aligned vertically. The container is filled with water (density 1.0 x 103 kg/m3). How much does the block compress the spring
A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.54 hours. What is density of the planet
A girl jumps on bike and exerts torque of 25.0 N-m perpendicular to the pedal. Moment of inertia of bike wheel is I = 0.045kg-m^2. What is angular velocity of bike wheel at end of this time
Supercapacitors, with capacitances of 1 F or more, are made with plates that have a spongelike structure with a very large surface area. Determine the surface area of a supercapacitor
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