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Q1. A small metal bead, labelled A, has a charge of 29 nC. It is touched to metal bead B, initially neutral, so that the two beads share the 29 nC charge, but not of necessity evenly. When the two beads are then placed 5.0 {rm cm} apart, the force between them is 5.3×10-4 N. Assume that A has a greater charge.
Q2. In a Crooke's Tube, a stream of electrons boils off a negative electrode, or cathode, and flies through a vacuum toward a positive electrode, or anode. Often, the anode is given a distinctive shape, like a cross, so that the electrons that miss it and fly past will create a dramatic shadow on the far end of the glass tube. The stream of electrons is flowing past a certain point between the cathode and the anode at a rate of 3.50 A. If 95.0 percent of the electrons reach the anode, (a) what amount of charge reaches the anode during a period of 15.0 s? Be careful of the sign of the answer. (b) How many electrons reach anode during a period of 15.0 s?
A car with good tires on a dry road can decelerate at about 5.0 m/s2 when braking. Suppose a car is initially traveling at 55 mi/h. (a.) How much time does it take the car to stop.
A plastic rod is rubbed against a wool shirt there by aquiring the charge of -0.80 mC. how many electrons are transfered from the wool shirt to the plastic rod.
Assuming the truck continues at constant speed from this minimum distance, for how long must the light remain yellow for the truck to completely clear the intersection before the light turns red.
A car starts from rest and then accelerates uniformly to a linear speed of 16 m/s in 42 s. If the tires have a radius of 27 cm, what are the following.
Define the frequency components of an AM signal and draw the AM signal for the given modulation index.
The primary coil of a transformer has N1 = 250 turns, and its secondary coil has N2 = 1500 turns. what rms voltage is developed across the secondary coil
A person pulls a toboggan for a distance of 41.7 m along the snow with a rope directed 24.3 ° above the snow, How much work is done on the toboggan by the tension force
A 7.0 kg box is raised from rest a distance of 3.0 m by a vertical force of 110 N. What is the total work done on the block when the block slides 1.4 m (measured along the incline)
Assume that there is a very beautiful ornate crown, supposedly made of solid gold, how would you determine its density
An electrically neutral model airplane is flying in a horizontal circle on a 4.0-m guideline, which is nearly parallel to the ground. Find the magnitude of the charges
An 800kHz radio signal is detected at a point 6.6 kmdistant from a transmitter tower. The electric field amplitude of the signal at that point is 780mV/m. What is the magnetic field amplitude of the signal at that point
A bullet of mass 7.00g is fired horizontally into a wooden block of mass 1.26kg resting on a horizontal surface.What was the initial speed of the bullet
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