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alba

Questions (33)

Determine a direction vector of the line of intersection of the two planes 2x - 7y + z = 5 and x + 3y - 6z = 2. If there is not
1. 1 answer
2. 709 views
in a class of 25 students, 15 play hockeyand 16 play basketball. if there are 4 students who play neither sport, determine the
1. 3 answers
2. 3,270 views
A bicycle tire has a mass of 2.54 kg and a radius of 0.346 m.(a) Treating the tire as a hoop, what is its moment of inertia
1. 0 answers
2. 756 views
A bowling ball of mass 7.45 kg is rolling at 2.56 m/s along a level surface.(a) Calculate the ball's translational kinetic
1. 0 answers
2. 781 views
Each of the following objects has a radius of 0.169 m and a mass of 2.02 kg, and each rotates about an axis through its center
1. 0 answers
2. 635 views
A 310-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 25° with the horizontal. What is
1. 0 answers
2. 696 views
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A
1. 0 answers
2. 763 views
A disk of mass m is spinning freely at 6.22 rad/s when a second disk of identical mass, initially not spinning, is dropped on it
1. 2 answers
2. 1,058 views
A basketball player entertains the crowd by spinning a basketball on his nose. The basketball has a mass of 0.622 kg and a
1. 0 answers
2. 813 views
A bowling ball of mass 7.45 kg is rolling at 2.56 m/s along a level surface.(a) Calculate the ball's translational kinetic
1. 2 answers
2. 1,795 views
A bicycle tire has a mass of 2.54 kg and a radius of 0.346 m.(a) Treating the tire as a hoop, what is its moment of inertia
1. 0 answers
2. 642 views
What is the magnitude of the angular acceleration of a 25.5-kg disk of radius 0.775 m when a torque of magnitude 41.5 N · m is
1. 1 answer
2. 529 views
A student rides his bicycle at a constant speed of 2.20 m/s along a straight, level road. If the bike's tires each have a radius
1. 0 answers
2. 767 views
A horizontal plank 4.12 m long and having mass 26.8 kg rests on two pivots, one at the left end and a second 1.03 m from the
1. 0 answers
2. 960 views
A mass of 1.50 kg is at(−2.55 m, 0) and a 2.04-kg mass at (4.00 m, 4.00 m). Find the center of mass of the system. ( m, m)
1. 0 answers
2. 442 views
A worker applies a torque to a nut with a wrench 0.485 m long. Because of the cramped space, she must exert a force upward at an
1. 0 answers
2. 1,086 views
A man opens a 1.14-m wide door by pushing on it with a force of 49.5 N directed perpendicular to its surface.(a) What magnitude
1. 2 answers
2. 4,170 views
A construction crane's cable lifts a 49.5-kg box upward with an acceleration of 1.30 m/s2. Find the tension in the rope.N
1. 2 answers
2. 2,776 views
A spinning wheel steadily slows from an initial angular velocity of 1.65 rev/s to 0.485 rev/s in 12.2 s.(a) Calculate the
1. 1 answer
2. 853 views
Solve the equations1 2 mv2 + 1 2 Iω2 = mgh and v = rω for the speed v using substitution, given that I = mr2 and h = 4.20 m.
1. 0 answers
2. 875 views
The two conditions for equilibrium often result in a system of equations such asF1 + F2 = 44.0 N and 3.00F1 − 8.00F2 = 0. find
1. 1 answer
2. 506 views
Find the net torque on the wheel in the figure below about the axle through O perpendicular to the page, taking a = 5.00 cm and
1. 0 answers
2. 1,027 views
A 74-kg fisherman in a 129-kg boat throws a package of massm = 15 kg horizontally toward the right with a speed of vi = 4.7 m/s
1. 0 answers
2. 806 views
In a popular amusement park ride, a rotating cylinder of radiusR = 2.60 m is set in rotation at an angular speed of 4.00 rad/s,
1. 1 answer
2. 759 views
A satellite is in a circular orbit around the Earth at an altitude of 3.30 106 m.(a) Find the period of the orbit. (Hint: Modify
1. 0 answers
2. 1,113 views
After the Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state. In this state, it would
1. 0 answers
2. 703 views
A 3.42-kg steel ball strikes a massive wall at 10.0 m/s at an angle ofθ = 60.0° with the plane of the wall. It bounces off the
1. 1 answer
2. 667 views
A force of magnitude Fx acting in the x-direction on a 2.55-kg particle varies in time as shown in the figure below. (Indicate
1. 2 answers
2. 3,857 views
A 0.278-kg volleyball approaches a player horizontally with a speed of 16.2 m/s. The player strikes the ball with her fist and
1. 1 answer
2. 6,244 views
i cant understand v/cv and vc/v patter mean .can you giv me exemple
1. 0 answers
2. 888 views
Water sample from 6 public swimming pools are combined for one test regarding bacteria level.Further testing is done if the
1. 0 answers
2. 441 views
did the railrosds reach shreveport before or after the discovery of oil at caddo lake?
1. 2 answers
2. 498 views
when was the red rever cleard for boat travel?
1. 1 answer
2. 240 views

Answers (2)

If a rod of 1025 steel 0.5 m long is heated from 20 to 80°C (293 to 353 K) while its ends are maintained rigid, determine the type and magnitude of stress that develops.
is 8.2because the dog round many time

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