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2m long wire is carrying a current of 2A. The The wire is placed atangle 60deg with respect to magnetic field. If wire experiances aforce of 0.2N, what is strenght of the magnetic fied?
A rubber ball of mass m falls straight down and bounces off the floor with equal incoming and outgoing speeds v. What is the magnitude of the impulse on the ball
The wave function for a wave on a taut string is y(x, t) = 0.335 sin(9?t ? 3?x + ?/4) where x and y are in meters and t is in seconds. What is the energy contained in each cycle of the wave
A 6.43 kg ball is thrown upward with an initial speed of 14.34 m/s. Ignore air resistance when answering the following questions. What is the ball's initial kinetic energy
142.3 cm and not more than 142.6 cm. What is the relative uncertainty of the measurement
A 145 g block hits a 115 g block initially at rest on a horizontalsurface. After impact they stick together and slide 9.01 m beforecoming to rest. The acceleration of gravity is 9.8 m/s^2. If thecoefficient of friction between blocks and surface is 0..
a wire has a current density of 7.81 times 106 am2. if the cross-sectional area of the wire is 1.23 mm2 what current
engine oil at 200 oc is forced over a 20-cm-square plate at a velocity of 1.2 ms. the plate is heated to a uniform
a firefighter with a weight of 715 n slides down a vertical pole with an acceleration of 3.10 ms2 directed downward.a
In the ground state of hydrogen, the uncertainty in theposition of the electron is roughly 0.10 nm. how fast is the electron moving
The truck is parked on the platform of a weight scale. Explain by how much does the scale reading exceed the weight of the truck and sand?
assume the coefficient of kinetic friction between m_{rm A} and the plane in the figure is mu_k = 0.15, and that m_{rm{A}} = m_{rm{B}} = 2.7{rm{ kg}}. What smallest value of mu _{rm{k}} will keep the system from accelerating.
a large uniform solid disc has a mass of 50 kg with a 10 kg 0.75 m long uniform rod added radially from the dsics axis
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