q8 Stars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slowly decrease in size. The angularvelocity of a star increases as it shrinks because ofA conservation of angular momentumB conservation of linear momentumconservation of energyD the law of universal gravitationE conservation of mass

A: conservation of angular momentum : if the net torque acting on the system is zero, then the total…

Answered: ars originate as large bodies of slowly…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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6. In Fig., solve for RT, Ih, V1, V2, V3, V4, Vs, V6, V7, I1, ½, Iz, I4, Is, I6, and I7. R = 1.5 kN R = 10 kn V, = 36 V R = 15 k2 Ra= 10 k2 R = 15 kn R, = 1 kN R = 5 kN
Zach, whose mass is 70 kg, is in an elevator going up at a constant speed of 2.0 m/s. Match the answers with questions. Use g = 10.0 m/s². vious Question What is the net force on Zach? A. -70 kg B. -700 N C. -140 N D. 700 N E. ON F. 140 N G. 70 kg What is the weight force on Zach? (This is Zach's true weight.) What is the normal force on Zach? (This is Zach's apparent weight.)
2. A 2.0 kg object moving to the right with speed 0.50 m/s experiences the force shown. What are the object's speed and direction after the force ends? F, (N) 2- A. 0.50 m/s left B. At rest C. 0.50 m/s right D. 1.0 m/s right E. 2.0 m/s right t (s)
d. 69.90 m a. 6.12 m C. 18.36 m b. 12.24 m 20. What weight will a spring scale read for a mass of a 60 kg woman stand on it in an elevator that moves downward with an acceleration of 6.0 m/s ? a. 984 N b. 588 N C. 786 N d. 228 N 11. A wheel 7.0 m in radius accelerates uniformly from 120 rad/min to 360 rad/min in 2.9 s. What is the angular acceleration? a. 2.26 rad/s^2 b. 6.55 rad/s^2 c. 1.38 rad/s^2 d. 2.76 rad/s^2 12. A person pull a 35 kg block 50 m along over a rough, horizontal surface with Hk = 0.30 a constant force Fp = 150 N, which acts at a 30° above the horizontal floor. If the frictional force is 80 N, what is the total net work done? a. 1433 J b. 11295 J c. 1917 J d. 2495 J 13. A child bounces a 52 g superball on the sidewalk. The velocity of the superball is from 24 m/s downward to 15 m/s upward. If the time contact with the sidewalk is 1.25 ms, what is the magnitude of the average force exerted on the superball on the sidewalk? a. 1622.4 N b. 1398.4 N C. 1248 N d. 374.4 N…
PLEASE ANSWER BOTH QUESTIONS FOR UPVOTES. NO UPVOTE IF ONLY ONE HAS AN ANSWER. PUT ONLY BRIEF EXPLANATIONS ON CHOOSING THE CORRECT ANSWERS. THANK YOU
HW drive the next relationship σ= ne² l m vd
A block attached to a spring with a stiffness of 3.4 N/m. The relaxed length of the spring is 15 cm and its current length is 10 cm. What is the vector force that the spring exerts on the block? A. (-0.34, 0, 0) N B. (0.51, 0, 0) N C. (-0.51, 0, 0) N D. (0.17, 0, 0) N E. (-0.17, 0, 0) N
37 A bead slides without friction on the folded wire as a circle from its end, as shown in the figure. The bead was dropped from a height of h = 4.50 R. What will be its velocity at Ⓐ? (g: gravitational acceleration)
A motorcycle moves around a circular track whose radius 2.69km. . It goes once around the trac368 seconds. What is the magnitude of the capital acceleration of the bike? A. 1.2 b.0.54 c.0.78 d.2.3 e.0.65
7. Determine the time needed for the load at B to attain a speed of 8 m/s, starting from rest, if the cable is drawn into the motor with an acceleration of 3 m/s?. Note that point A moves to the right, so this will require both a vertical and horizontal datum. A В
A Exp3.pdf - Adobe Acrobat Reader DC (64-bit) O X Dosya Düzenle Görünüm İmzalama Pencere Yardım Ana Sayfa Araçlar Exp3.pdf Oturum Aç 4 / 6 %75 101L/103L Experiment 3 PHYS 101 Lab Manual Puck(m,) Pulley Additi mal Mase(m2) 3. Answer the following questions (in terms of (T) tension, masses and the gravitational acceleration (g)) if the suspending mass m2 travels a distance h. Take the direction of the motion as the positive vertical axes. (a) What is the work done by the gravity on the suspending mass? (b) What is the work done by the gravity on the puck? (c) Which force is doing work on the suspending mass against gravity? (d) What is the work done against gravity on the suspending mass? (e) Are there any work done against gravity on the puck? (f) What is the work done on the puck by the tension? 4. Write down the work energy relation; (a) For the puck: (b) For the suspending mass: ENG 11:32 PM O Type here to search 57°F Mostly cloudy TRQ 11/1/2021 区

What is the net force acting on a 26.5kg box resting on the floor? O88.97N O 26.5 N O ON 98.3 N

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ars originate as large bodies of slowly rotatin8 gas. Because of gravity, these clumps of gas sowly decrease in size. The angular velocity of a star increases as it shrinks because of