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(a) What is the resistance of a lightbulb that uses an average power of 55.0 W when connected to a 60.0 Hz power source having a maximum voltage of 180 V?(b) What is the resistance of a 100 W bulb?
what is the maximum mass it can support in freshwater. find the maximum height of the projectile is equal to its horizontal range.
A missile of mass 1.10 102 kg is fired from a plane of mass 5.10 103 kg initially moving at a speed of 3.50 102 m/s. determine is the final velocity of the plane
A series ac circuit is shown. The inductor has a reactance of 80 Omega and an inductance of 200 mH. A 90- Omega resistor and a capacitor whose reactance is 130 Omega , are also in circuit. The rms current in the circuit is 1.3A. What is the phase ..
a motor starts from rest with an angular acceleration of 12. rad/s ^2 what is the motor angular speed 4.0s later? how many revolutions does it make in this period of time
A moving sidewalk 95 m in length carries passengers at a speed of .53 m/s. One passenger has a normal walking speed of 1.24 m/s, If she walks at her normal walking speed on the sidewalk, how long does it take to travel the fill length
A conducting sphere of radius r1 = 0.29 m has a total charge of Q = 2.2 uC, What is the total charge on sphere two, Q2 in C
At one instant a bicyclist is 75m due east of a park's flagpole, going due south with a speed of 13.0 m/s. Then, 10s later, the cyclist is 65 m due north of flagpole, going due east with a speed of 20.0 m/s.
When you jog, most of the food energy you burn above your basal metabolic rate (BMR) ends up as internal energy, Determine the amount of water you lose to evaporation when running for 31 minutes at a rate that uses 400 kcal/h above your BMR
An artillery shell is fired with a minimal velocity of 470m/s at 50o above the horizontal. To clear an avalanche, it explodes on a mountain side 38 s after firing.
An object weighs 294N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 240N. When it is immersed in oil, it weighs 258N.
assume that you are a Haitian taptap driverand want a more comfortable ride. You decide to replace the springswith new springs that can handle the typical heavy load on yourvehicle. What spring constant do you want your new spring system to have.
What is mechanical energy
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