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What is the relationship between current and magnetic force, What is the relationship between the length of the wire and the magnetic force
A protostar has a temperature of 3000 K,radius of 2*10^8 km at stage 4. At stage 6, Calculate the star's change in absolute magnitude as it evolves from stage 4 to stage 6
Object A of mass 1 kg and velocity 10 m/s east collides with object B of mass 2 kg and veocity 8 m/s south. What is the velocity of object B after the collision
A 1kg ball with a speed of 3 m/s collides head on, elastically, with a 2 kg ball moving at 1 m/s. What will be the velocity of each ball after the collision
A 2 kg gun imparts a speed of 500 m/s to a 25 g bullet. what average force is exerted on the shooter's shoulder
In bouncing off a racket, a 50 g tennis ball had its velocity changed from 15 m/s in the forward direction to 20 m/s, how long was the ball in contact with the racket
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 0.196 mH and the capacitor has a value of 28.2 pF. Calculate the frequency of the radio station
Calculate the thermal de Broglie wavelengths for helium-4 (boson) and helium-3 (fermion) gases at T = 5K
If you had 102 L of water and you wanted to make a solution with a salt concentration of 0.2 g/L, how much salt would you need to add
A 25.0mH inductor is connected in series with a 50.0 ohms resistor, a 15.0 mH inductor and a 60.0 Hz 140.V rms source. Draw the reactance diagram for the circuit
Consider three non-interacting particles each of which has three accessible quantum states. Determine the possible states for this system if the particles are fermions
your optometrist recommends that you purchase reading glasses with a refractive powerof 3 diopters. determine the location of your near point or far point
Determine the dimentions (in cm) of a rectangular aluminum block (also 40 cm long) that would have the same resistance between the farthest opposing sides as the silver block (part a)
what is the minimum diameter of the eyepiece required to collect all the light entering the objective from a distant point source located on the telescope axis
A spear fisherman is using m a laser rifle, he is standing in a stream 0.5m deep, if the laserstruck the water 5m out from the fisherman, how far was his feet from the fish
The spin cycles of a washing machine have two angular speeds, 431rev/min and 622rev/min . The internal diameter of the drum is 0.440m. Find the laundry's maximum tangential speed
A particular amplifying device supplies electrons in a manner such that the current passing out of the device, Determine the charge that passes out of the device if left on for 30 seconds
Emilie's potter's wheel rotates with a constant 2.00rad/s2 angular acceleration. What was the angular velocity of the wheel at the beginning of the 3.60s interval
A hair dryer operate at 1800 watts along with a 240 watt power resistor connected in a series. Utilizing a 120 volt source, determine the current I and resistance R of the hair dryer
A series RLC circuit has a resistance of 80? , an inductance of 0.48H , and a capacitance of 3.0, f= 130Hz. What is the impedance at that frequency??F
Two cylinders have the same radius R = 0.6 m and length 0.6 m, but one is a solid cylinder of massM1 = 4.5 kg, What is the ratio of the final speed of the solid cylinder to that of the hollow cylinder
A particle with a positive charge 2e moves with a velocity V= (2i + 3j - k) m/s through a region where both a uniform magnetic field and a uniform electric field exist. Calculate the total force on
A proton beam in an accelerator carries a current of 148 ?A. If the beam is incident on a target, how many protons strike the target in a period of21.0 s
Write the Ampere's Law for a path that surrounds both conductors
An ideal transformer has 890 turns in its primary coil and 150 turns in its secondary coil. What is the output voltage of the secondary coil