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A hypodermic syringe contains a medicine with the density of water. The barrel of the syringe has a cross-sectional area A = 2.60 10-5 m2, and the needle has a cross-sectional area a = 1.00 10-8 m2. In the absence of a force on the plunger, the pressure everywhere is 1 atm. A force F of magnitude 4.00 N acts on the plunger, making the medicine squirt horizontally from the needle. Determine the speed of the medicine as it leaves the needle's tip.
If Michaela needs to wear reading glasses with refractive power of +3.0 D, what is her uncorrected near point
A string of mass 0.0003kg/m and 0.5m long is vibrating 200 cycles per second. What must be the tension? What hanging mass would generate this tension? I got 12N for tension. Is this correct? And how would you solve for hanging mass.
A motorcycle moves in a flat circular path of radius R on a surface with a coefficient of kenetic friction of 0.25 and a coefficient of static friction of 0.35. How long does it take to complete one full circle
In the lab frame, a point charge of +q is at rest between two streams of positive charge moving at c/3. The charge per unit length in the line of moving charges is ?C/m. In the lab frame, the electrostatic forces on charge q add up to zero, and th..
A force of 2 N is applied to a stationary 5 kg block for 0.3s. What is the speed of the block after the force is applied
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. What is the underwater angle of refraction for the blue component of the light
question1assume we added some constant to the total energy of the system. for instance say that instead of the
a helium tank holds 0.62m^3 of heliumat a pressure of 910 kPa. What volume would the helium occupy
Two charged spherical conductors are connected by a long conducting wire, and a charge of 15 μC is placed on the combina- tion. One sphere has a radius of 4.05cm and the other a radius of 6.05cm.
Some of the first "microscopes" were really single-lens magnifying glasses made by Leeuwenhoek. These devices had magnifications as high as 200.
What is the least coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road.
To stretch a spring 2.00 cm from its unstretched length, 15.0 J of work must be done, What is the force constant of this spring
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