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Forces of 4 N and 6 N act on an object. What is the minimum value for the sum of these two forces?
When a woman who is 2 m tall stands near a flagpole, the shadow of her head and the shadow of the top of the flagpole are superimposed, Find the height of the flagpole
A 27.0 g copper ring at 0°C has an inner diameter of D = 3.04591 cm. A hollow aluminum sphere at 87.0°C has a diameter of d = 3.05180 cm. What is the mass of the sphere
A sphere of mass 2.8 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes an angle of 40° with vertical when at rest.
Two long parallel wires each carry a current of 5. A directed to the east. The two wires are separated by 8 cm. What is the magnitude of the magnetic field at a point that is 5.0 cm from each of the wires.
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 440-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the aluminum cup
Unpolarized light passes through two polarizers in turn with polarization axes at 33° to one another. What is the fraction of the incident light intensity that is transmitted
Two cars cover the same distance in a straight line. Car A covers the distance at a constant velocity. Car B starts from rest and maintains a constant acceleration. Both cars cover a distance of 547m in 221s.
A professor's office door is 0.94 wide, 2.2 high, 4.0 thick; has the mass of 23, and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame. When the door is open and at rest, the door closer exerts a torque of 5..
Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 is 3.7 kg and m2 is 9.0 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor.
A mass of 0.5 kg is suspended from a spring, which stretches by 8 cm. At what frequehcy would you expect resonant behavior
Suppose an object is set sliding, with a speed less than escape velocity, on an infinite frictionless plane in contact with the surface of the Earth. Describe its motion.
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker, What is the total intensity level
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