You have a coin and you put it 20.0 cm from the middle of a spinning, horizontal turntable slips when its speed is 20.0 cm/s. What's the statio friction coefficient between the coin and the turntable? O a. 0.01 O b.0.02 Oc. 0.085 Od.01 O e. 2
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- A boy takes a 1.5-kg rock and ties it to the end of a 0.80-m-long, massless, uniform rope. He then swings the rock in a vertical circle. If the speed of the rock at the bottom of the swing is 5.0 m/s, what is the tension in the rope? QUESTION 8 a. 52 N Ob.72 N OC. 57 N d. 67 N e. 62 NWhen a rigid body rotates about a fixed axis, all the points in the body have the same Lütfen birini seçin: O A. Linear displacement. O B. Tangential acceleration. O C. Centripetal acceleration D. Angular acceleration. O E. Tangential speed.QUESTION 11 What minimum velocity must a small roller-coaster car have at the bottom of a frictionless, circular, loop-the loop track of radius 8.00 m in order to make it over the top without falling off the track? Neglect wind resistance. 19.8 m/s 11.0 m/s 8.20 m/s 14.3 m/s 15.1 m/s a. 8.20 m/s Ob. 11.0 m/s O C. 15.1 m/s Od. 14.3 m/s e. 19.8 m/s
- Please answer my questions..thanksAn asteroid traveling through space collides with one end of a long, cylindrical satellite and sticks to the satellite. Which the following are true for the asteroid-satellite system in this collision? a. linear momentum and angulur momenutm are both conserved. b. linear momentum is conserved, but angular momentum is not. o c. Linear kinetic energy is not conserved, but rotational kinetic energy is conserved. d. Linear and rotational kinetic energy are conservedA 1000 kg car with a speed of 50 miles per hour on the curve of 50 in diamenter. What is the angular of the car? a. 22.2 rad/s b. 0.889 rad/s c. 22.2 m/s d. 45 rad/s e. 0.45 rad/s
- Josh is painting yellow stripes on a road using a paint roller. To roll the paint roller along the road, Josh applies a force of 15 N at an angle of 45° with respect to the road. The mass of the roller is 2.5 kg; and its radius is 4.0 cm. Ignoring the mass of the handle of the roller, what is the magnitude of the tangential acceleration of the roller? A. 4.2 m/s2 B. 6.0 m/s2 C. 15 m/s2 D. 110 m/s2#46E7. Starting from rest, a merry-go-round accelerates at a con- stant rate of 0.2 rev/s². a. What is its rotational velocity after 5 s? b. How many revolutions occur during this time?
- Let's do this example, following the same steps that the example but with new numbers. r (0) = 4x0 8 = π rad Odot = 0.5 rad/s Odotdot 0.25 rad/s² Mass of the motorcycle is 150 kg. a. Now using the formula: ag = rö + 2rẻ what is the radial acceleration of the motorcycle? O 4.094 m/s² O 3.047 m/s² O 5.189 m/s² O 7.236 m/s² b. Let's find using the formula: tan = Note: is the derivation of the function r about 0. OOOO O 86.6 deg O 76.6 deg O 56.6 deg O 79.2 deg d. e. f. g. C. What is the magnitude of the friction force? Give your answer as an integer What is the magnitude of the normal force? Give your answer as an integer. If the path is defined by r (0) = 30². Using:tan find the angle at = rad. Give your answer with one decimal in degree. * (0) = 1/0² 0 (t) = 5t What is the magnitude r dot at t= 0.2 second? r (0) = 10² 0 (t) = 5t What is the magnitude r dot dot at t= 0.2 second?A rock is tied to the end of a 35 cm long string and whirled around in a circle that describes a vertical plane. The tension in the string becomes zero when the speed of the rock is a. 9.8 × 102 cm/s d. 9.8 cm/s b. 1.9 × 102 cm/s e. 1.9 cm/s c. 19 cm/sA stuntman drives a car (without negative lift) over the top of a hill, the cross section of which can be approximated by a circle of radius R= 250 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill in km/h? R Lütfen birini seçin: O A. 178 O B. 221 O C. 135 O D. 150 O E. 205