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Batteries consist of an ideal source of potential dissimilarity in series with a small resistance. The electrical energy of the battery is produced with chemical reactions that occur in the battery. But, these reactions also result in a small resistance that, unluckily, cannot be completely eliminated. A flashlight contains two batteries in series. Each has a potential dissimilarity of 1.50 V and an internal resistance of 0.200 \Omega. The bulb has a resistance of 22.0 \Omega.
1. How much power does the bulb dissipate?
2. Determine what is the current through the bulb?
3. How much greater would the power be if the batteries had no internal resistance?
A ball on the end of a string is whirled around in a horizontalcircle of radius 0.405m. The plane of the circle is 1.07m above theground. The string breaks and the ball lands 2.46m away from thepoint on the ground directly beneath the ball's locat..
By how much does the ball clear the net. How far below top surface would the medallion appear if the observer (not wearing goggles) and the block were under water.
a ball is thrown horizontally from the top of a building 0.10 km high. the ball strikes the ground at a point 65 m
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is ? = 3.00 10-7 C/m2, and the plates are separated by a distance of 2.9 10-2 m. How fast is the electron moving just bef..
In Figure 24-47, seven charged particles are fixed in place to form a square with an edge length of 9.0 cm. How much work must we do to bring a particle of charge +2e initially at rest from an infinite distance to the center of the square?
An airplane is flying with a velocity of 83.0 at an angle of 25.0 above the horizontal. When the plane is a distance 114 directly above a dog that is standing on level ground, the suitcase drops out of the luggage compartment.
A rifle with a barrel length of 64cm fires a 12gbullet with a horizontal speed of 400m/s. What resistive force (assumed to be constant) does the wood exert on the bullet
The electric field of a sinusoidal electromagnetic wave obeys the equation E=?(375V/m)sin[(5.97×1015rad/s)t+(1.99×107rad/m)x]. What is the amplitude of the electric field of this wave
According to the law of universal gravitation, what will happen to Earth if the Sun were somehow replaced by the black hole of same mass.
a charge of 9.3 micro-coulombs is placed at the origin of a coordinate system. another charge of -13.6 micro-coulombs
Tension is maintained in a string. The observed wave speed is24 m/s. When the suspended mass is 3.0 kg, What is the mass per unit length of the spring
Must show all work and calculations!!!! A primitive yo-yo is made by wrapping a string several times around a solid cylinder with m=200g and r=10cm. Find the tension in the string and the acceleration of the cylinder
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