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A 1-kg circular disc of radius 50 cm starts from rest and rotates with constant angular acceleration with an angular speed of 12.0 rad/s in 3.5 s. Find the magnitude of angular momentum of the disc and the angle in radians through which it rotates in this time.
Calculate the maximum stress at full pressure that could drive the growth of a crack.
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. What angle does the velocity vector make with the horizontal
a child throws a 5.4 kg package horizontally from a boat with a speed of 10 m/s. Calculate the resulting velocity of the boat
Conceptual Example 14 provides useful background for this problem. A playground carousel is free to rotate about its center on frictionless bearings, What is the person's mass
A block of mass m1 = 3 kilogram is sliding across a frictionless table at a speed of v1 = 3 m/s. Obtain the maximum energy lost in the collision
Tarzan, with a mass of 80.0 kg, wants to swing across a ravine on a vine, how much kinetic energy (at least) must he have when he jumps off the cliff where he starts
A satellite in Earth orbit has a mass of 92 kg and is at an altitude of 2.04 106 m. (Assume that U = 0 as r ? infinity.) (a) What is the potential energy of the satellite–Earth system? J (b) What is the magnitude of the gravitational force exerted..
What "breakthrough" from a theoretical point of view is required for solar energy to become feasible energy alternative?
The speed of waves along the string increases with increasing tension in the string. Should the magnitude of M be increased or decreased in order to double the number of antinodes in the standing wave pattern. Justify your answer.
A diatomic gas expands adiabatically from one atmospherepressure to two atmosphere pressure. Find the ratio of its final volume to its initial volume
A car, moving at the constant speed of 36 km per hour, enters (at t = 0) a ramp heading north. One minute later, it completes the turn and travels toward the east. Discover its average acceleration (both direction and magnitude).
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
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