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A given piezoelectric sensor has a 100pF capacitance and a charge sensitivity of 4μC/cm. The connecting cable has a 300pF capacitance, and the measuring oscillascope has an input impedance of 1M\Ω in parallel with 50pF.
(a) Determine the minimal frequency of the force we can measure with this system if the maximal allowed amplitude error is 5%.
(b) Determine the capacitance that must be connected in parallel in order to extend the band with 5% error to 10Hz.
suppose you want to detemine the electrical field in a certain region of space. you have a small object of known charge
what is the orbital angular momentum for the lowest electron orbit in the hydrogen atom?a according to bohr?b according
How fast is the balloon traveling when it hits the bystander on the head if Jimmy is 11 m above the sidewalk and the bystander is 2-m tall
A 65-g ice cube at 0°C is placed in 874 g of water at 23°C. What is the final temperature of the mixture
On a frictionless, horizontal air table, puck A (with mass 0.25 kg) is moving toward puck B (with mass 0.350 kg), that is initially at rest. After the collision, puck A has a velocity of 0.120 m/s to the left, and puck B has velocity 0.620 m/s to the..
At which three points x_1, x_2, and x_3 closest to x=0 but with x>0 will the displacement of the string y(x,t) be zero for all times? These are the first three nodal points. Express the first three nonzero nodal points in terms of the wavelength l..
A freight train is rolling down the track at 65.0km/hr. Out ofthe fog, 1km behind, a fast express going 120km/hr, appears on thesame track. The Express engineer slams on the brakes.
On an air track, a 400.5g glider moving to the right at 2.00m/s collides elastically with a 500.5g glider moving in the opposite direction at 3.00m/s. find the velocity of the glider after the collision
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 3.50 cm into the river. What is the weight of the truck
A small ball is located at the origin and has as charge of +3.9 nC. At a distance of 5.8 cm the electric field has a magnitude of 10422 N/C. What is the direction of the electric field, away or toward the ball
Water has a mass per mole of 18 g/mol,, and each water molecule has 10 electrons. what is the net charge of all these electrons
Two wires are parallel and one is directly above the other. Each has a length of 50.0 m and a mass per unit length of 0.020 kg/m. However, the tension in the wire A is 6.20 102 N, and the tension in the wire B is 2.90 102 N.
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