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You are given a 9 V battery and three bulbs rated atrespectively (9V, 5 W), (9V, 2W), and (12 V, 6W). Assume that the battery has negligible internal resistance and that the three bulbsobey Ohm's law and convert energy to light with equaleffeciency.a) When the 5 W bulb is connected to the battery terminals,what current will be established in the bulb?b) what is the resistance of the 6 W bulb?c) The 6 W bulb is connected to the battery terminals. Howdoes its brightness compare ot the 5 W bulb (a)? Explain.d) The 5 W and the 2 w bulb are connected ins eries with the battery. Which bulb will be brighter? Explain.
A 0.760 m long brass pendulum experiences a 21.0°C temperature increase. What is the change in the period
An alpha particle (a helium nucleus) is traveling along the positive x-axis at 1350 m/s, How far does the particle travel before hitting the tube wall
A 400-W immersion heater is placed in a pot containing 2.0 litters of water at 20 C.(a) how long will it take to bring the water to boiling temperature assuming that 80% of the available energy is absorbed by the water?(b) how much longer will it tak..
q1. a certain car battery with a 14.0 v emf has an initial charge of 195 abullh. assuming that the potential across the
at what frequency does the inductive reactance of a 82.0 microh inductor equal the capacitive reactance of a 82.0
The pressure gauge on a tank registers the gauge pressure, which isthe difference between the interior and exterior pressure. When thetank is full of oxygen (O2), it contains 15.0 kg of the gas at a gauge pressure of 35.0 atm.
a wire has a current density of 18 amm2. if the drift velocity is 5.0times10-8 ms how many free electrons does the
A person notices a mild shock if the current along a path through the thumb and index finger exceeds 72µA. Compare the maximum possible voltage without shock acrossthe thumb and index finger with a dry-skin resistance of3.0 multiplied by 105 and a we..
A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position, what was his angular velocity when he left the diving board
A gas is contained in a cubic box whose sides are 3m long. If the gas is initially at 80 K, and it is heated up to 320 K at constant volume, What is the final pressure
You use a sequence of ideal polarizing filters, each with its axis making the same angle with the axis of the previous filter, What is the angle between adjacent polarizers
two point charges are separated by a distance of 1.5 c.m. and have charges of 2.0 micro c and 4.0 micro c respectively.
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