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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.
A person is making homemade ice cream. She exerts a force of magnitude 21 N on the free end of the crank handle on the ice-cream maker, what is the average power being expended
An 85-kg man stands 0.70 m from the center of a large, rotating turntable with a frictionless axis. What is the turntable's moment of inertia
Why should you maximize the volts/division scale on the gradecule when determining the amplitude of the waveform
Mass 1 is a 15.0 g marble sliding to the left with a velocity of magnitude 0.72 m/s on the frictionless, Calculate the momentum of the marbles before the collision
Estimate the force P to accelerate the 80 - Ib block at 6ft/sec2 to the right.
Consider a simple model for the interior of the Earth: there is a spherical iron core with constant mass density ?0 and radius a; outside the core is "rock" with constant density ?1. Calculate the radius a of the iron core
An object, mass 2.96kg, moves in a horizontal circle with a radius of 3.8m. The object has the intial velocity of 32.6 m s-1. If the kinetic coefficient of friction between the object and the surface is 0.31, then number of completed revolutions (..
A capacitor consists of two parallel plates, each with an area of 14.0 cm^2, separated by a distance of 0.150 cm. How much energy is stored in the charged capacitor
The Zacchini family was renowned for their humancannonball act in which a family member was shot from a cannon using either elastic bands or compressed air. what was the magnitude of the force propelling him
A piston, A, as shown below, has a diameter of 0.81 cm. A second piston, B has a diameter of 3.9 cm. conclude the force, F, necessary to support the 508.0 N weights in the absence of friction.
A particle with a charge 3.2 x 10^-19 C is moving at a speed of 5x10^7 m/s that makes an angle of 40 degrees with respect to a uniform magnetic field B, Determine the magnetic field strength B
Consider the circuit in the figure below with resistors R1 = 2,400 ?, R2 = 4,400 ?, and R3 = 1,100 ?, What is the magnitude of the current in the circuit
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