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A 90 kg gentleman standing on slippery grass is pulled by his two rather unruly children. One tugs him with 50 N north, toward the ice cream stand, while the other hauls with 115 N toward the bathroom, due east.
Overlooking friction, compute Pop's resulting acceleration.
Magnitude ______m/s2
Direction ______° (north of east)
A person of mass 50 kg rides a loop the loop (vertical circular track) at an amusement park. find the normal force exerted at the bottom of the loop
For a damped oscillator with a mass of 170g, the spring constant 92 N/m and a damping coefficient of 55g/s, what is the ratio of amplitude of the damped oscillations to the initial amplitude at the end of 22 cycles.
A 0.246-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%, What is the average current supplied to the car\'s motor?
A mass of 1.61kg stretches a vertical spring 0.31m. If the spring is stretched an additional 0.132m and released, how long does it take to reach (new) equilibrium position again.
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.5 cm in diameter and carries a current of 55 A. If the bird's feet are 3.9 cm apart, calculate the potential difference between its feet. (Th..
a super-particle travels forward along a straight cylindrical tube at 1000 m/s for 10 m, What is the average velocity
why the mass of the dishwater is large enough. If vector B is added to C = 2.0 ihat + 3.0 jhat, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of C. What is the magnitude of vector B.
A convex lens with f1= 20.3cm is mounted 39.5cm to the left of a concave lens. When an object is placed 29.4cm to the left of the convex lens, What is the focal length f2 of the concave lens
A bug starts at the origin of the xy coordinate system with an initial velocity of (2.2 + -0.4) m/s, What is the y position of the bug at t=2 seconds
Consider a ring of radius R with the total charge Q spread uniformly over its perimeter. What is the potential difference between the point at the center of the ring and a point on its axis a distance 2R from the center
An athlete completed a marathon in 2 h, 39 min, 41 s. Determine the average speed (in miles per hour) of the athlete.
Bruce stands on a bank beside a pond, grasps the end of a 10.00-m long rope attached to a nearby tree and swings out to drop into the water. If the rope starts at an angle of 36° with the vertical, what is Bruce's speed at the bottom of swing.
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