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Two converging lenses with focal lengths of 40cm and 20cm are placed 10cm apart. A 2cm tall object is 15cm from the 40cm focal length lens.
A 0.420 kg ice puck, moving east with a speed of 3.04 m/s, has a head-on collision with a 0.930 kg puck initially at rest.
The mass is dropped and the end of the beam deflects .095m when it contacts the ground.
The potter can stop the wheel in 6.00 s by pressing a wet rag against the rim and exerting a radially inward force of 65.0 N.
Unpolarized light passes through two polaroid sheets. The axis of the first is vertical, and that of the second is at 26.0° to the vertical.
What is the mass of a man running at 5 m/s if he has a kinetic energy of 500 J?
This figure indicates the energy required to conjure up the rabbit "out of thin-air". Evidently it takes more than energy, U=E, of the rabbit.
What direction is F3? What direction is F3?
Calculate the speed of the ball as it leaves the barrel if a constant resisting force of 6.00 N acts on the ball as it moves along the barrel.
Find the average current in the axon wall during this process. (Hint: The time required to return to the resting state is 3.0 ms.)
What change in magnetizing force is required to decrease the flux density of magnetic material from a saturation in the positive direction to zero.
A heated copper wire 1 mm in diameter is in a pool of water at 1 atm. What is the maximum heat flux (q/A)? The temperature difference is related to the heat
A light horizontal spring has a force constant of k=100 N/m. A 2.00 kg block is pressed against one end of the spring, compressing it 0.100 m.
A string is wrapped several times around the rim of a small hoop with radius and mass . The free end of the string is held in place and the hoop is released.
When operating from a 230 V dc supply, a DC series motor operates at 900 rounds per minute with a line current of 75 Amps. Its armature-circuit resistance
The case starts from rest at the bottom and is moving 4.02 m/s at the top of the incline. The force of friction on the box is 39.4 N.
Consider a point source emitting 10^12 neutrons/s in a vacuum. Calculate the flux and the current at a distance of 1 m from the source
What is the net upward force on an airplane wing of area 17.9 m^2 if the speed of air flow is 295 m/s across the top of the wing and 280 m/s across the bottom.
Consider the space region bounded below by the right angled cone z=sqrt(x^2+y^2), and above by the sphere
Determine the energy required to accelerate an electron between each of the following speeds.
Find the current I_N, required to establish a flux of 2 mWb in the air gap of the magnetic structure shown in the figureThe structure is made of silicon
From the conditions in part (b), derive a transcendental equation determining the bound state energy E.
According to its package, a 100 watt light bulb emits 1140 lumens. For simplicity, assume the bulb provides isotropic illumination.
The container can be modeled as a perfect cylinder with a radius of 9 inches and no end caps.The height of the bed of the pickup truck is H=20 inches.
A block slides on a semicircular frictionless track. If it starts from rest at position (A), What is its speed at the point marked.