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- 1. A force is given as Ẻ = xy² x + (x²y + y) ŷ. Calculate § F. dỉ along the circumference of a circle of radius 3.6. What would be the magnitude of the force labeled B? 300 N 50 N 80 N 20 N G, 200 N 200 N Fnet = ON Faet 900 N, up Fnet 60 N, left Fnet - 30 N, right %3D 0 Newtons O 60 Newtons 200 Newtons 260 Newtons1. Find the central force necessary to make a parti- cle describe the lemniscate r2 = a² cos 20, where a is a constant.
- Calculate the resultant force ANGLE relative to progression (to 1 decimal place) given the following data: vertical force Z =991 N and horizontal force X= 148 N E Answer inere to search C Check $ A KO R F V 96 5 T G 1.8 B 40 6 Y H N 4- 7 U J 8 M I к S hp KA N 9 O > L alt gr AUTY O Ps F P ; ctrl ? C 010 . = } 1 pause 2°C Mostly cloudy delete ←backspace # ^4x home num lock 7 home Next page 4 end 09:46 30/11/2023 1 1 end 8 pa up 5 L 2 O insH.W: In the Boher model of the hydrogen atom an electron moves at 2.19*10m/s in an orbit of radius 5.29*10" centered on a proton. (a)what is the centripetal force on the electron? (b)what is the number of revolutions made each second? Ans. (a)9.06*10"m/s (b = 6. 58 + 1015 1/s H.W: A ball is thrown with an initial speed voat an angle 0 below the horizontal from rooftop 44m above the ground. It lands 2sec later at a point 32m from the Vor base of the building. Find vo and 0 Ans. 0 = -37.32vo = 20. 1m/s H.W: A ball thrown up from a rooftop of height 40m lands on ground in 4s. (a)what is its maximum height above the ground? (b)what is its velocity 15m below the rooftop? Ans. (a)44.7m (b) v = -19.65 4 H.W: An object is thrown horizontally at 20m/s from a cliff top 45m above sea level. Find (a)the time to land; (b)the angle at which it hits the water; (c)the speed at which it hits the water. Ans. (a)3.03s (b)Ø = -54.73 (c)35.79m/sH.W: In the Boher model of the hydrogen atom an electron moves at 2.19*10'm/s in an orbit of radius 5.29*10" centered on a proton. (a)what is the centripetal force on the electron? (b)what is the number of revolutions made each second? Ans. (a)9.06 10"ms (b = 6. 58 - 1015 1/s H.W: A ball is thrown with an initial speed voat an angle e below the horizontal from rooftop 44m above the ground. It lands 2sec later at a point 32m from the base of the building. Find v, and 0 Ans. 8 = -37.32v, = 20. 1m/s
- The Lunar Reconnaissance Orbiter (LRO), with mass m = 1850 kg, maps the surface of the Moon from an orbital altitude of 50.0 km. What are the magnitude and direction of a. the force the LRO experiences due to the Moons gravity and b. the force exerted by the LRO on the Moon?300 lb 100 lb 45° 30 400 lb 200 1b Figure 2-56. Calculate the magnitude of the resultant of three concurrent forces: The first force is 200 Npointing 60 deg. above the positive X-axis; the second force is 60 N in the positive Ydirection and the third force is 150 n in a direction 45 deg below the positive X- axis.A. 242.13 NB. 341.13 NC. 414.13 ND. 312.13 N
- What is the normal force on the mass M = 7 kg in the figure if F = 60 N and the angle %3D D= 30°? F Select one: O A. 30 N O B. 40 N OC. O C. 120 N O D. 100 N OE. 70 N6 F=LOKN TE=4KN Express the force F3 needed to keep a particle Oi n equilibrium as a Cartesian vector. * O [oi-2j-8k] O (8i+0j+2k] O 1-8i+0j-2k] O (oi-8j-2k]2. Twoforces,oneofmagnitude2Nandoneofmagnitude3N,areappliedto the ring of a force table. The directions of both forces are unknown. Which of the following best describes the magnitude of the equilibrium force? Justify your answer.a. FE ≤ 5N b. 2N≤FE≤3N c. FE ≥ 3Nd. 1N≤FE≤5N e. FE ≤ 2N