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The volume rate of a flow in a horizontal pipe is 4.0 L/s. The diameters of the pipe at points A and B are 4.0 cm and 5.0 cm, respectively. Discover a) the speeds of the flow at points A and B; b) the dissimilarity in pressure between the two points, i.e.
The gravitational attraction between two objects varies directly as the product of their masses and inversely as the square of the distance between them. Determine the force of attraction between two spheres
A grandfather clock is controlled by a swinging brass pendulum that is 1.1 m long at a temperature of 30.°C. What is the length of the pendulum rod when the temperature drops to 0.0°C?
Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.50 cm, its potential energy is 0.0025 J.
Find what average power beaded to accelerate a 650 kilogram car from 0 to 65 mi/h in 5.5 s? Suppose that all forms of frictional losses can be ignored
Ricardo, mass 80 kilogram, and Carmelita, who is lighter, are enjoying Lake Merced at dusk in a 30 kilogram canoe. determine Carmelita mass
The spring in a clothespin is compressed 0.40 cm, storing energy in the form of spring potential energy. If the spring is compressed twice as far, the spring potential energy increases with 0.0046 J. What is the force constant, k, for this spring?
A 17,000-kg airplane lands with a speed of 82 m/s on a stationary aircraft carrier deck that is 115 m long. Find the work done by no conservative forces in stopping the plane.
A bicycle rim has a diameter of 0.65 {\rm m} and a moment of inertia, gauged about its center, of 0.25 {\rm kg}\cdot{\rm m^2}.What is the mass of the rim? Express your answer to two important figures and include the appropriate units.
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. Determine how much time elapses between an instant when the object's speed is at a maximum and the next instant when its acceleration is at a maxi..
A painter wishes to know whether or not he can safely stand on a ladder. Determine the maximum mass of the painter for which the ladder will remain stable when he climbs a distance d =4.9 meter up the ladder
A ball of mass .5 kg moves perpendicular to the door by the speed of 10 m/s. The door has a mass of 3 kg and a width of 2 m and is hinged about one end. The moment of inertia of a bar rotated about its end is 1/3 Ml^2. The ball strikes the end of the..
The Moon has an angular size of 0.50 ? when viewed with unaided vision from Earth. What is the angular size of the Moon as seen through this telescope
A viscous fluid is flowing through two horizontal pipes. They have the same length, although the radius of one pipe is three times as large as the other. what is the volume flow rate QB in the wider pipe
A 55.0 kg sailor jumps from a dock into a 100.0 kg rowboat at rest beside it. what is the velocity of the sailor
psi x is the wave function for a particle moving along the x axis. write the mathematical that will allow us to
A horizontal 605 N merry-go-round of radius 1.31 m is started from rest by a constant horizontal force of 77.9 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go- round
A person on earth notices a rocket approaching from the right at a speed of 0.74c and another rocket approaching from the left at 0.52c. What is the relative speed between the two rockets
A centrifuge in a medical laboratory rotates at an angular speed of 3600 rev/min. When switched off, it rotates during 50.0 revolutions before coming to rest. Discover the constant angular acceleration of the centrifuge.
What are the disadvantages and the advantages of locating solar collectors on a vertical, south-facing wall
If lithium ion Li+2 is treated as a classical system of one electron of charge ?e going around a nucleus of charge 3e on a circle of radius 1.77× 10?11 m, find the ionization energy of the electron
a 281 ball is tied to a string. it is pulled to an angle of 3.6 and released to swing as a pendulum. a student with a
an object is located 9.0 cm in front of a converging lens f 6.0cm. determine a distance of the image and b the height
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