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Q. Three objects are connected on a table. The rough table has a coefficient of kinetic friction of .350. The objects have masses of 4.00 kg, 1.00 kg, and 2.00 kg as shown, and the pulleys are frictionless. (a) draw a free body diagram for each object. (b) determine the acceleration of each object and each object's directions. (c) determine the tensions in the two cords. (d) if the tabletop were smooth, would the tensions increase, decrease, or remain the same? Explain.
Q. A rose colored mineral specimen is given to you for identification.It has a cochoidal fracture,no streak,and a non metallic luster.It has can be scratched with a steel file,but not with glass or a pocket knife blade.Its mass is 53 grams.You place it in water and it displaces a volume of 20 cubic centimeters of water. What is the hardness of this mineral?explain your answer.
An electron accelerated from rest through the voltage of 500V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 17cm, what is the magnitude of magnetic field.
Assume that light of wavelength 550 nm is being observed. Also suppose that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Find the greatest distance that these stars might be from the earth.
How much energy is necessary to bring the system back
Four charges are placed at the vertices of a square, centered at the origin. If each side of the square has a length of 0.224 m, what is the strength and direction of net electric field at the origin? Express your answer in terms of the charge ma..
The sun is more massive than the moon, but the sun is farther from the earth. Which one exerts a greater gravitational force on a person standing on earth? Give the answer by determining the ratio Fsun/ Fmoon of magnitudes of gravitational forces.
What is the magnitude of the centripetal acceleration.
A 66 {rm kg} skier speeds down a trail, as shown in the figure . The surface is smooth and inclined at the angle of 22 ^circ with the horizontal. Find the magnitude of the net force acting on the skier.
The edge of a cube consist of equal resistors of resistance R, that are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance.
A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..
Released from rest at the same height, a can of frozen juice rolls to the bottom of the same hill. What is the translational speed of the frozen juice can while it reaches bottom.
The movement of the water because of the tides will give kinetic energy to the turbine blades, causing them to spin. In the calculations that follow ignore any frictional drag because of the seawater.
A young woman buys a sports car that can accelerate at the rate of 5.47m/s2. She decides to test the car by drag racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 1.47s before Kathy. Stan ..
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