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Question1
A cylindrical 3.52 kg pulley with a radius of 0.360 m is used to lower a 4.45 kg bucket into a well. The bucket starts from rest and falls for 3.29 s. What is linear acceleration of the falling bucket? The acceleration of gravity is 9.81 m/s 2. Answer in units of m/s 2
Question2
A simple random sample of 1,000 members of American Psychological Association to whom you will send a questionnaire about their views concerning the appropriate preparation of clinical psychologists. List steps you take in selecting your sample.
Question3
A spring with spring constant 20.0 hangs from the ceiling. A 570 ball is attached to the spring and allowed to come to rest. It is then pulled down 7.20 and released.
What is time constant if the ball's amplitude has decreased to 2.30 after 49.0 oscillations?
An air puck of mass m1 = 0.30 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. The other end of the string passes by a hole in the center of the table, and a mass m2 = 1.20 kg is att..
find speed at which the ball left the quarterback's hand.
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b, What is her average speed over the entire trip
The pupil of an eagle's eye has a diameter of 6.0 mm. Two field mice are separated by 0.010 m. How much time passes until the eagle sees the mice as separate objects
three charges shown in figure from an equilateral trangle with 4.9 cm long sides what is the electrical potentialat the point indicted with the dot
The force diagram shown describes the forces acting on the back while bending at the waist in static equilibrium the trunk makes a 60 degree angle with the vertical. hat is the torque equation about point A
A block of mass m1 = 4.00 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, What is the magnitude of the tension in the cord
A spring is compressed by 0.0527 m and is used to launch an object horizontally with a speed of 2.19 m/s. at what angular frequency (in rad/s) would it oscillate
The leg and cast weigh 220 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 135 N. find the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast.
Lithium hydride, 7LiH, is a potential fuel for fusion reactors because it is one of the few compounds of very light elements that exists as a solid, and is therefore more dense than gaseous fuels even under extreme conditions
a glider with mass m= 0.200 kg sits on a frictionless horizontal air track, What is the displacement x of the glider from its equilibrium position when its speed is 0.20 m/s
A ray of light strikes a plane mirror perpendicular to the mirror. What is the angle of reflection
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