Help me please with all the questions.

Note: On question 7 on the space " select": the options are the same for a), b) and c).

6. [-110 Points] SERCP11 7.4.P.027. ASK YOUR TEACHER PRACTICE ANOTHER = 0.15 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. The other end of the string passes through a An air puck of mass m1 hole in the center of the table, and a mass of m2 : 1.3 kg is tied to it (see the gure below). The suspended mass remains in equilibrium while the puck on the tabletop revolves. (a) What is the tension in the string [in N)? :I N (b) What is the horizontal force acting on the puck [in N)? :IN (c) What is the speed of the puck [in mfs)? :l m... Need Help? 7. [-110 Points] magnitude direction magnitude direction magnitude direction upward.) magnitude direction SERCP11 7.4.P.031.Ml. A 38.07kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 rn. (a) What is the centripetal acceleration of the child? (b) What force [magnitude and direction) does the seat exert on the child at the lowest point of the ride? :N @ (c) What force does the seat exert on the child at the highest point of the ride? :N @ Z N counter-clockwise from the horizontal Need Help? ASK YOUR TEACHER PRACTICE ANOTHER (d) what force does the seat exert an the child when the child is halfway between the top and bottom? [Assume the Ferris wheel is rotating clockwise and the child is moving SuhnlitAlswer ' 7. [-/10 Points] DETAILS SERCP11 7.4.P.031.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 38.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m. (a) What is the centripetal acceleration of the child? magnitude m/s2 direction --Select--- ..... -Select-- (b) What force the seat exert on the child at the lowest point of the ride? magnitude toward the center of the path direction away from the center of the path tangent to the path (c) What forced at the highest point of the ride? magnitude The magnitude is zero. direction --Select--- (d) What force does the seat exert on the child when the child is halfway between the top and bottom? (Assume the Ferris wheel is rotating clockwise and the child is moving upward.) magnitude N direction counter-clockwise from the horizontal Need Help? Read It Master It Submit Answer8. [-/10 Points] DETAILS SERCP10 7.P.033. MY NOTES ASK YOUR TEACHER The average distance separating Earth and the Moon (center to center) is 384,000 km. Use the data in the table to find the net gravitational force exerted by Earth and the Moon on a 3.00 x 10#-kg spaceship located halfway between them. N Useful Planetary Data Body Mass (kg) Mean Radius (m) Period (s) Distance from Sun (m) Mercury T2/13(52/ m3) 3.18 x 1023 2.43 x 106 7.60 x 106 5.79 x 1010 Venus 2.97 x 10-19 4.88 x 1024 6.06 x 106 1.94 x 10 1.08 x 1011 Earth 2.99 x 10-19 5.98 x 1024 6.37 x 106 3.16 x 10/ 1.50 x 1011 Mars 2.97 x 10-19 6.42 x 1023 3.37 x 106 5.94 x 107 2.28 x 1011 2.98 x 10-19 Jupiter 1.90 x 1027 6.99 x 107 3.74 x 108 7.78 x 1011 2.97 x 10-19 Saturn 5.68 x 1026 5.85 x 10 9.35 x 108 1.43 x 1012 2.99 x 10-19 Uranus 8.68 x 1025 2.33 x 10 2.64 x 109 2.87 x 1012 2.95 x 10-19 Neptune 1.03 x 1026 2.21 x 10 5.22 x 109 4.50 x 1012 2.99 x 10-19 Pluto 1.4 x 1022 ~1.5 x 106 7.82 x 109 5.91 x 1012 2.96 x 10-19 Moon 7.36 x 1022 1.74 x 106 Sun 1.991 x 1030 6.96 x 108