Essential University Physics Volume 1, Loose Leaf Edition (4th Edition)
4th Edition
ISBN: 9780135264669
Author: Richard Wolfson
Publisher: PEARSON
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Chapter 11, Problem 35P
A weightlifter’s barbell consists of two 25-kg masses on the ends of a 15-kg rod 1.6 m long. The weightlifter holds the rod at its center and spins it at 10 rpm about an axis perpendicular to the rod. What’s the magnitude of the barbell’s
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Chapter 11 Solutions
Essential University Physics Volume 1, Loose Leaf Edition (4th Edition)
Ch. 11.1 - Youre standing on the sidewalk watching a car go...Ch. 11.2 - The figure shows four pairs of force and radius...Ch. 11.3 - The figure shows three particles with the same...Ch. 11.4 - You step onto an initially nonrotating turntable...Ch. 11.5 - You push horizontally at right angles to the shaft...Ch. 11 - Does Earths angular velocity vector point north or...Ch. 11 - Figure 11.12 shows four forces acting on a body....Ch. 11 - You stand with your right arm extended...Ch. 11 - Although it contains no parentheses, the...Ch. 11 - Whats the angle between two vectors if their dot...
Ch. 11 - Why does a tetherball move faster as it winds up...Ch. 11 - Why do helicopters have two rotors?Ch. 11 - A group of polar bears is standing around the edge...Ch. 11 - Tornadoes in the northern hemisphere rotate...Ch. 11 - Does a particle moving at constant speed in a...Ch. 11 - When you turn on a high-speed power tool such as a...Ch. 11 - Why is it easier to balance a basketball on your...Ch. 11 - A bug, initially at rest on a stationary,...Ch. 11 - If you increase the rotation rate of a precessing...Ch. 11 - A car is headed north at 70 km/h. Give the...Ch. 11 - If the car of Exercise 15 makes a 90 left turn...Ch. 11 - A wheel is spinning at 45 rpm with its axis...Ch. 11 - A wheel is spinning about a horizontal axis with...Ch. 11 - A 12-N force is applied at the point x = 3 m, y =...Ch. 11 - A force F=1.3i+2.7jN is applied at the point x =...Ch. 11 - When you hold your arm outstretched, its supported...Ch. 11 - Express the units of angular momentum (a) using...Ch. 11 - In the Olympic hammer throw, a contestant whirls a...Ch. 11 - A gymnast of rotational inertia 62 kg m2 is...Ch. 11 - A 640-g hoop 90 cm in diameter is rotating at 170...Ch. 11 - A 7.4-cm-diameter baseball has mass 145 g and is...Ch. 11 - A potters wheel with rotational inertia 6.40 kg ...Ch. 11 - A 3.0-m-diametcr merry-go-round with rotational...Ch. 11 - A uniform, spherical cloud of interstellar gas has...Ch. 11 - A skater has rotational inertia 4.2 kg m2 with...Ch. 11 - You slip a wrench over a bolt. Taking the origin...Ch. 11 - Vector A points 30 counterclockwise from the...Ch. 11 - A baseball player extends his arm straight up to...Ch. 11 - Prob. 34PCh. 11 - A weightlifters barbell consists of two 25-kg...Ch. 11 - Prob. 36PCh. 11 - Two identical 1800-kg cars are traveling in...Ch. 11 - The dot product of two vectors is half the...Ch. 11 - Biomechanical engineers have developed...Ch. 11 - Figure 11.15 shows the dimensions of a 880-g...Ch. 11 - As an automotive engineer, youre charged with...Ch. 11 - A turntable of radius 25 cm and rotational inertia...Ch. 11 - A 17-kg dog is standing on the edge of a...Ch. 11 - A physics student is standing on an initially...Ch. 11 - Youre choreographing your schools annual ice show....Ch. 11 - Find the angle between two vectors whose dot...Ch. 11 - A circular bird feeder 19 cm in radius has...Ch. 11 - A force F applied at the point x = 2.0 m, y = 0 m...Ch. 11 - Prob. 49PCh. 11 - Prob. 50PCh. 11 - Jumbo is back! Jumbo is the 4.8-Mg elephant from...Ch. 11 - An anemometer for measuring wind speeds consists...Ch. 11 - A turntable has rotational inertia I and is...Ch. 11 - A uniform, solid, spherical asteroid with mass 1.2...Ch. 11 - About 99.9% of the solar systems total mass lies...Ch. 11 - Youre a civil engineer for an advanced...Ch. 11 - In Fig. 11.18, the lower disk, of mass 440 g and...Ch. 11 - A massless spring with constant k is mounted on a...Ch. 11 - A solid ball of mass M and radius R is spinning...Ch. 11 - A time-dependent torque given by = a + b sin ct...Ch. 11 - Consider a rapidly spinning gyroscope whose axis...Ch. 11 - When a star like our Sun exhausts its fuel,...Ch. 11 - Pulsarsthe rapidly rotating neutron stars...Ch. 11 - Prob. 64PCh. 11 - Figure 11.22 shows a demonstration gyroscope,...Ch. 11 - Figure 11.22 shows a demonstration gyroscope,...Ch. 11 - Figure 11.22 shows a demonstration gyroscope,...Ch. 11 - Figure 11.22 shows a demonstration gyroscope,...
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- A rectangular current loop (a = 15.0 cm, b = 34.0 cm) is located a distance d = 10.0 cm near a long, straight wire that carries a current (Iw) of 17.0 A (see the drawing). The current in the loop is IL = 21.0 A. Determine the magnitude of the net magnetic force that acts on the loop. Solve in N. a b IL Iwarrow_forwardTwo long, straight wires are separated by distance, d = 22.0 cm. The wires carry currents of I1 = 7.50 A and I2 = 5.50 A in opposite directions, as shown in the figure. Find the magnitude of the net magnetic field at point (B). Let r₁ = 12.0 cm, r2 = 7.00 cm, and r3 = 13.0 cm. Solve in T. 12 d A √3arrow_forwardI tried to solve this question, and I had an "expert" answer it and they got it wrong. I cannot answer this questionarrow_forward
- Eddie Hall is the current world record holder in the deadlift, a powerlifting maneuver in which a weighted barbell is lifted from the ground to waist height, then dropped. The figure below shows a side view of the initial and final positions of the deadlift. a 0 = 55.0° Fift h22.5 cm i hy = 88.0 cm b iarrow_forwardsolve for (_) Narrow_forwardTwo boxes of fruit on a frictionless horizontal surface are connected by a light string as in the figure below, where m₁ = 11 kg and m₂ = 25 kg. A force of F = 80 N is applied to the 25-kg box. mq m1 Applies T Peaches i (a) Determine the acceleration of each box and the tension in the string. acceleration of m₁ acceleration of m₂ tension in the string m/s² m/s² N (b) Repeat the problem for the case where the coefficient of kinetic friction between each box and the surface is 0.10. acceleration of m₁ acceleration of m₂ tension in the string m/s² m/s2 Narrow_forward
- All correct but t1 and t2 from part Aarrow_forwardThree long, straight wires are mounted on the vertices of an equilateral triangle as shown in the figure. The wires carry currents of I₁ = 3.50 A, I2 = 5.50 A, and I3 = 8.50 A. Each side of the triangle has a length of 34.0 cm, and the point (A) is located half way between (11) and (12) along one of the sides. Find the magnitude of the magnetic field at point (A). Solve in Teslas (T). I₁arrow_forwardNumber There are four charges, each with a magnitude of 2.38 μC. Two are positive and two are negative. The charges are fixed to the corners of a 0.132-m square, one to a corner, in such a way that the net force on any charge is directed toward the center of the square. Find the magnitude of the net electrostatic force experienced by any charge. ips que Mi Units estic re harrow_forward
- Two long, straight wires are separated by distance, d = 22.0 cm. The wires carry currents of I1 = 7.50 A and I2 = 5.50 A in opposite directions, as shown in the figure. Find the magnitude of the net magnetic field at point (B). Let r₁ = 12.0 cm, r2 = 7.00 cm, and r3 = 13.0 cm. Solve in T. 12 d A √3arrow_forwardThank you in advance, image with question is attached below.arrow_forwardQuestion is attached, thank you.arrow_forward
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