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Q1. Two long, straight parallel wires 10.6 cm apart carry currents of equal magnitude I.
The parallel wires repel each other with a force per unit length of 2 nN/m.
The permeability of free space is 4 × 10-7 T • m/A. Find I. reply in units of mA.
Q2. Sherlock Holmes examines a clue by holding his magnifying glass (with a focal length of 27.7 cm) 22.4 cm away from an object. Discover the image distance.
Answer in units of cm
Q3. A 4.70 kg mass causes a vertical spring to stretch 0.850 meters. The spring is after that stretch and extra 0.270 meters and release (as a stopwatch starts) causing the spring and mass to oscillate.
What is the greatest velocity of this mass? Using the equations
T=1/f and Vmax=2πA/T
A diverging lens with a focal length of -48.0cm forms a virtual image 8.50mm tall, 16.5cm to the right of the lens. Determine the position of the object
An iron tower in is 39 meters tall on a cold day, What is the HEIGHT of the tower on a hot day when the temp is 31.5 degrees Celcius
a very long, straight solenoid witha cross-sectional area of 6.25cm^2 is would with 44 turns of wire per centimeter, What is the average inducted emf in the secondary coil
The graph shows the component of a force acting on an object, Find the work done by the force over the specified intervals of displacement
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
Two masses 3kg and 5kg are held around a pulley as shown in the figure. When the two masses released, what will be the acceleration of the 5kg mass
You work in a materials testing lab and your boss tells you to increase the temperature of a sample by 48.7%u2218C. what is its temperature in degrees Fahrenheit
The density of water in Earth's hydrosphere and the density of rocks in the crust are both lower than the average density of the planet as a whole
a car traveling at 35m/s runs out of gas while traveling up a 9.0? slope. How far will it coast before starting to roll back down
Suppose we measure the terminal voltage of a rechargeable NiCad battery and find it to be 1.28 V when measured by a voltmeter. calculate the internal resistance of the battery
a ball made of rubber weighing 1kg is thrown at a wall at 6m/s. A ball of putty weighing 1kg is also thrown at the wall at a speed of 6m/s. Which ball transfers the greater momentum to the wall
What is the rms speed of nitrogen molecules at a temperature of 37 oC? The mass of a nitrogen molecule is 4.680×10-26 kg
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