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1) A solid disk (r=0.20 m, M=0.50 kg) is suspended fro the end of an L=0.30m long rod (m=0.30 kg, cross-sectional area of 2.0 cm^2). This pendulum is suspended on a frictionless pivot on the rod at the end opposite to the disk. WHAT IS THE PENDULUM'S PERIOD FOR SMALL ANGLE OSCILLATIONS?
2) A Transverse wave travels along a stretched string at a speed of 1.25 m/s. The string's linear density is 2.75 g/cm. At the string's x=10.0 cm position the vertical dsiplacement of the strings varies with time acording to: y(t)=0.25 cos (3.56-7.54t) (where y is in meters and t is in seconds) WHAT IS THE WAVE'S VERTICAL DISPLACEMENT (in m) at x =81 cm and t =3.5 s?
The leg and cast weigh 177N (w1). Find out the weight w2 and the angle α required so that no force is exerted on the hip joint by the leg plus cast.
A child sits on the edge of a spinning merry-go-round that has a radius of 2.2 m. The child's speed is 4 m/s. What is the child's acceleration
A coil has an inductance of 0.45 H and a resistance of 42 ohms. The coil is connected to a 5.6 V ideal battery. What is the total power that the battery supplies
Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. Determine the final speed of the orange disk
An empty rubber balloon has a mass of 0.0120kg. The balloon is filled with helium at 0oC, 1atm pressure, and a density of 0.179kg/m3, What is the magnitude of the buoyant force acting on the balloon
The force on a particle is directed along an x axis and given by F = 0.97(x/4.6 - 0.52) where x is in meters and F is in Newtons. Find out the work done by the force in moving the particle from x = 0 to x = 8.9 m.
A satellite has a mass of 5555 kg and is in a circular orbit 4.20 105 m above the surface of a planet. What would be the true weight of the satellite if it were at rest on the planet's surface
A projectile is fired at an upward angle of 50° from the top of a 145m cliff with a speed of 195 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
An 8.70-kg block slides with an initial speed of 1.51 m/s up a ramp inclined at an angle of 27.4 degrees with the horizontal. calculate the distance the block slides before coming to rest.
A hydrogen atom consists of a single proton and a single electron. Experimentally it is found that it takes 13.6eV of energy to strip the electron from the proton. calculate the size of the hydrogen atom
Nitrogen gas is heated by a pulsed laser to 50 000 K. If the diameter of the nitrogen atoms is assumed to be 1.0 ´ 10-10 m, what is the mean free path
What would be the fundamental frequency on a piece of the same string that is twice as long and has four times the tension
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