Physics 151 Hamilton Aditya Singh SI Exam Review 11_13_2022 answer key

Please help me answer 1,2 and 3 with complete solution

In a medical lab, you put blood in tubes in a centrifuge to separate the plasma from the formed elements (platelets, red blood cells, and white blood cells). The centrifuge you have goes from rest to 20,000 rpm in 4.0 s. What is the final angular velocity of the centrifuge? What is the angular acceleration of the centrifuge? How many rotations does the centrifuge go through while it accelerates?

Hi. I've been having difficulties with this question and I'd be thankful if I could get some help with it.  - A struggling physics student

Please only answer question 2.

Four toy racecars are racing along a circular race track. The cars start at the 3-o'clock position and travel cCW along the track. t-6.16 Car C is constantly 4 feet from the center of the race track and travels at a constant speed. The angle Car C sweeps out increases at a constant rate of 0.5 radian per second. a. How many radians O does car C sweep out in t seconds? Preview b. Define a function h that determines Car C's distance to the right of the center of the race track (in feet) as a function of the number of seconds t since the start of the race. h(t) - Preview c. Car C must sweep out 2n radians to complete one full lap, and we know it sweeps out 0.5 radian per second. How many seconds will i take Car C to complete one full lap? seconds Preview d. Sketch the graph of the function à below. 27 -2 Clear All Draw: W W e. What is the amplitude of h? Preview

Hello, Can someone please show how to solve this problem? Thanks

Olympic ice skaters are able to spin at about 5.0 rev/s.   a. What is their angular velocity in radians per second?  b. What is the centripetal acceleration of the skater’s nose if it is 0.120 m from the axis of rotation in m/s2?  c. An exceptional skater named Dick Button was able to spin much faster in the 1950s than anyone since—at about 9 rev/s. What was the centripetal acceleration of the tip of his nose, assuming it is at 0.120 m radius in m/s2?

In an amusement park ride called The Roundup, passengers stand inside a 19.0 m -diameter rotating ring. After the ring has acquired sufficient speed, it tilts into a vertical plane, as shown in (Figure 1). For help with math skills, you may want to review: Mathematical Expressions Involving Squares For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Vertical circle. Figure Rotation axis I 1 of 1 Part B Suppose the ring rotates once every 5.40 s. If a rider's mass is 57.0 kg, with how much force does the ring push on her at the bottom of the ride? Express your answer with the appropriate units. μÅ Value Submit Part C Units X Incorrect; Try Again; 5 attempts remaining Value Submit Previous Answers Request Answer What is the longest rotation period of the wheel that will prevent the riders from falling off at the top? Express your answer with the appropriate units. ■μÅ ? Units Request Answer ?

In an amusement park ride called The Roundup, passengers stand inside a 18.0 m -diameter rotating ring. After the ring has acquired sufficient speed, it tilts into a vertical plane, as shown in ( Figure 1). For help with math skills, you may want to review: Mathematical Expressions Involving Squares For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Vertical circle. Figure Rotation axis 0 1 of 1 Part A Suppose the ring rotates once every 4.80 s. If a rider's mass is 59.0 kg, with how much force does the ring push on her at the top of the ride? Express your answer with the appropriate units. Value Submit µÅ Part B Units ? Units input for part A Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Review your calculations and make sure you round to 3 significant figures in the last step. Review Suppose the ring rotates once every 4.80 s. If a rider's mass is 59.0 kg, with how much force does the ring push…

Part B: How many revolutions does it make before reaching full speed? Express your answer in revolutions using two significant figures.

A Ferris wheel has a radius of 24 feet and completes one revolution (or full rotation) every 6 minutes. At what constant angular speed does the Ferris wheel rotate at (in radians per minute)

I. Modified Multiple Choices: Write the letter of your choice on the space provided. Then explain or show the solution that justifies your answer. Each item is worth 2 points; correct answers but without solution will gain only 1 point. 1. A particle moves in a circle of radius 1.50 m according to the relation (t)=5t + 3t, where Ois measured in radians and t in seconds. What is the linear speed of the particle after 3.00 seconds? a) 33.0 m/s b) 49.5 m/s c) 54.0 m/s d) 45.0 m/s 2. Refer to #1. What is the tangential acceleration after 3.00 seconds? b) 45.0 m/s² a) 10.0 m/s² c) 30.0 m/s² d) 15.0 m/s² 3. An ice skater spins with arms fully extended. If she pulls her arms closer to her body then (a) the kinetic energy increases (b) the moment of inertia decreases (c) the angular momentum remains constant (d) all of these 4. Juan Tamad is pedalling a bicycle at 10 m/s. Suppose the diameter of the bicycle wheels is 132 cm. What is the angular speed of the wheels? (a) 7.5 rad/s b) 13 rad/s c)…

I Review i Two satellites are in circular orbits around a planet that has radius 9.00 × 10° m. One satellite has mass 68.0 kg, orbital radius 6.00x107 m, and orbital speed 4800 m/s. The second satellite has mass 84.0 kg and orbital radius 5.00x107 m. Part A What is the orbital speed of this second satellite? Express your answer to three significant figures and include the appropriate units. HẢ ? V = Value Units Submit Request Answer

An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 20.0 days on average to complete one nearly circular revolution around the unnamed planet. If the distance from the center of the moon to the surface of the planet is 2.420 × 10° km and the planet has a radius of 4.100 × 10³ km, calculate the moon's radial acceleration a. a = m/s? & TOOLS x10

1. A circle has a radius of 10 cms. a) Find the central angle that cuts off an arc length of 17 cms (rounded to the appropriate number of significant digits if you use 3.14 as an approximation of T.) b) Find the central angle that cuts off a sector of area 40 cm2 c) Use the arc length formula to show how velocity is related to angular velocity for circular motion.

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An 8.79cm diameter floppy disk rotates at its fastest at 470 rpm.  Part D: What is the angular velocity at the center of the disk?  Part E: If the disk took 3.2 sec to spin up to 470 rpm from rest, what was the average angular acceleration? How many revolutions did the disk complete within this time? What is the net displacement?  Part F: If you turn off the floppy disk drive and the disk comes to a stop in 6.7 s, what is the average angular acceleration for this period of motion?

A toy racecar races along a circular race track that has a radius of 19 meters. The racecar starts at the 3-o'clock position of the track and travels in the CCW direction. Suppose the car has swept out 2.25 radians since it started moving. a. The racecar is how many radius lengths to the right of the center of the race track? radius lengths Preview b. The racecar is how many meters to the right of the center of the race track? meters Preview c. The racecar is how many radias lengths above the center of the race track? radius lengths Preview d. The racecar is how many meters above the center of the race track? meterss Preview

Can you answer this question. It has 6 parts and is multiple choice. You can just me the letter for the answer. Thank you!!!

Rotational motion. I need help with #8

ha body that will guid. What Have I Learned So Far? 1. The circular path of the moon, which has a radius of approximately 3.84 x 105 km, as it revolves around Earth makes the moon complete one revolution in 27.32 days. What is the speed of the moon and its radial acceleration? e circular rack. Solution: is 2. Bodies that are on the surface of Earth are undergoing radial acceleration due to Earth's rotation on its axis. Our planet completes one rotation in 24 hrs and has a radius of about 6371 km. a. What is the radial acceleration of a body found at Earth's equator in m/s2. b. If a certain body will be placed at 25° latitude, compute its radial acceleration. in Action ter edge force. Solution: move

Mark bought a pizza of a radius of 0.5 m. A fly lands on the pizza and walks around the edge for a distance of 80 cm. What is the angular displacement of the fly?