What is the resistance of the bulbs filament

Assignment Help Physics
Reference no: EM13560545

A light bulb is connected to a 240 Vwall socket. The current in the bulb depends on the time t according to the relation I = (2.121 A) sin[ (439.6Hz) t ].

a) What is the frequency of the alternating current?
b) What is the resistance of the bulb's filament?
c) What is the average power delivered to the light bulb?

Reference no: EM13560545

Questions Cloud

What is the net force actingon this object at the given time : Velocity graph of a 2.kg objectas it moves along the x-axis. What is the net force actingon this object at the given times? it gives me a vilocity time graph and asked me to findthe net force at t=1s,4s,7s
Gravitational potential energy of all the water : The gravitational potential energy of all the water stored behind avery large dam is 1.2×1016 J, using the base of the damas the reference point for zero PE. Imagine you could store the same amount of potential energy in a system consisting oftwo ..
A certain mass of hydrogen gas occupies a volume : A 3.00 gram lead bullet is moving at 180. m/s andenters a bag of sand and stops. By what amount does the temperature of the bullet change if all its kinetic energy becomes thermal energy.
What is the peak power delivered to the machine : The rms current in a copy machine is 3.00 A, and the resistance of the machine is14.6 Ω. What is the average power?
What is the resistance of the bulbs filament : A light bulb is connected to a 240 Vwall socket. The current in the bulb depends on the time t according to the relation I = (2.121 A) sin[ (439.6Hz) t ]. What is the resistance of the bulb's filament?
Radius of copper wire that can be used in the extension cord : Review Conceptual Example 7 as an aid in solving this problem. Aportable electric heater uses 14 A ofcurrent. The manufacturer recommends that an extension cordattached to the heater dissipate no more than 2.3 W of power per meter of cord length.
What is angle q of the plane with respect to the horizontal : A box of mass 29.7 kg slides down an inclined plane without friction. If the acceleration, a, of the box along the direction ofthe plane is 4.1 m/s2, what is the angle q (in degrees) of the plane with respect to the horizontal?
Law of gravity-size of force of attraction between earth : Calculate, using Newton's law of gravity, the size of the force of attraction between the Earth and a mass of 5.0kg on the Earth. Data: Distance to the center of Earth from thesurface = 6370 km. Mass of Earth = 5.98*1024 kg.
Find the charge on capacitor in circuit one time constant : The capacitor in an RC circuit(R = 100 Ω, C = 45 uF) is initially uncharged. Find the charge on the capacitor in the circuit one time constant (r = RC) after the circuit is connected to a9.0-V battery.

Reviews

Write a Review

Physics Questions & Answers

  How fast is the cyclist going

A cyclist starts from rest and coasts down a 4.0?hill. The mass of the cyclist plus bicycle is 85 kg. Ignore air resistance and friction. How fast is the cyclist going

  What is the coefficient of volume expansion in the glass

If the coefficient of volume expansion of mercury is 18x10(^-5) (K^-1), what is the coefficient of volume expansion in the glass?

  Estimate the gauge pressure at a second point in the line

Light is emitted by a sodium sample that is moving toward Earth with speed v. The wavelength of the light is 589 nm in the rest frame of sample. The wavelength measured in the frame of Earth is 537 nm. Find v.

  How far from the cannon on train does the projectile land

A spring-loaded cannon aimed at 47 deg. above the horizontal is on the last car of a long train of flat cars. How far from the cannon on the train does the projectile land

  What is the charge on negative electrode

What is the charge on negative electrode. Find out the wavelength.

  What is the initial energy of the oscillator

A dampled harmonic oscillator is made from a 0.8kg mass on a k=14N/m spring with a damping constant of 400g/s, what is the initial energy of the oscillator

  Particle falls to earth starting from rest at a great height

A particle falls to Earth starting from rest at a great height(many times Earth's radius). Neglect air resistance and show thatthe particle requires approximately 9/11 of the total time of fallto traverse the first half of the distance. [Note: You wi..

  Estimate how long was it in the air

A soccer ball is kicked with a speed of 9.55 at an angle of 55.0 above the horizontal.If the ball lands at the same level from which it was kicked, how long was it in the air

  What is the radius of curvature of the mirror

A child holds a candy bar 10.0 cm in front of a convex mirror andnotices that the image is only one-half the size of the candy bar. What is the radius of curvature of the mirror?

  What would be the length of one edge of that cube

If this amount were shaped into a cube, what would be the length of one edge of that cube (in meters)

  At what minimum speed must a roller coaster

At what minimum speed must a roller coaster be traveling when upside down at the top of a circle (Fig. 5-34) if the passengers are not to fall out? Assume a radius of curvature of 9.4 m.

  What is the lowest pressure that students lungs can create

A student sucks on the end of a long tube which is initially filled with air and whose other end is in a large bucket of water which is open to the atmosphere. They manage to draw the water up a vertical distance of 5.09 m

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd