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A 3m long wire of mass 200g is suspended in a magnetic field of 0.3 T (see below).
a. If the field points into the page, and the wire runs along the x-axis, what direction must the current flow for the suspension to occur?
b. What is the magnitude of the current is flowing through the wire?
Imagine a very heavy cube of pure gold that is 1.23 m on a side. Approximate the atoms in this cube as little cubes, How far would the line stretch
Estimate the value of resistances needed to make a variable timer for intermittent windshield wipers: one wipe every 15?s, 8?s, 4?s, 2?s, 1?s, Estimate the mininum value of the resistance
A barbell spins around a pivot at its center . The barbell consists of two small balls, each with mass m = 460 grams, at the ends of a very low mass rod whose length is L = 24 cm. The barbell spins with angular speed ω = 50 radians/s.
An 84.4-mH inductor and a 6.27-µF capacitor are connected in series with a generator whose frequency is 361 Hz. Determine the rms voltage across the inductor
In a head-on collision, a car stops in 0.29 {s} from the speed of 28 {m/s}. The driver has a mass of 78 {kg}, and is, fortunately, tightly strapped into his seat. what force is applied to driver during that fraction of a second.
Suppose a tank contains 770 m3 of neon (Ne) at an absolute pressure of 1.01×105 Pa. The temperature is changed from 293.2 to 295.6 K. What is the increase in the internal energy of the neon?
A bowling ball of mass 7.00kg is rolling at 3.00m/s along a level surface. Calculate the ball's rotational kinetic energy
A gray kangaroo can bound across level ground with each jump carrying it 9.2 from the takeoff point. what is the max height above the ground
A plank 2.00 cm thick and 12.9 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
A 4.0-kg object has a velocity of 4.0 m/s headed east. An explosion causes it to break up into two smaller 2.0-kg objects. what is the velocity of the other object after the explosion
If the parachutist comes to rest with constant acceleration over a distance of 0.710 m, illustrate what force does the ground exerts on her?
A 270 m wide river flows due east at a uniform speed of 2.30 m/s. A boat with the speed of 8.4 m/s relative to water leaves the south bank pointed in a direction 38o west of north. What is (a) magnitude and (b) direction of the boat's velocity rel..
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