How many joules of energy are used by the flashlight

Assignment Help Physics
Reference no: EM13241008

You have a flashlight that uses 0.75 watts of power and requires 1.5 volt battery.

How many joules of energy are used by the flashlight in 15 minutes? Hint: Joules are watts and seconds and you are computing the difference between the electric energy at two points A and B.

What the total charge q0? Hint: the statement of the problem provides delta V.

How many particles, each having a charge of 1.60 x 10^-6, are needed to produce the total charge at q0?

Reference no: EM13241008

Questions Cloud

Write the equation for q in terms of k c and v : The capacitance of an empty capacitor is 2.5 x 10^-6 F. The capacitor is connected to a 3 volt battery and charged up, Write the equation for q in terms of K, C(subscript zero), and V
Explain an n-type semiconductor with an element : If you want to dope GaAs to make an n-type semiconductor with an element to replace Ga, which of the elements below would you pick
Components of a full hypothesis test : Show all necessary components of a full hypothesis test, including a source table - Can the office determine if there was a significant difference between the waiting room conditions
The electrode is connected by an external circuit to an iron : A standard hydrogen electrode is immersed in an acetic acid solution. This electrode is connected by an external circuit to an iron nail dipping into 0.10 M FeCl2. If Ecell is found to be 0.24 V, what is the pH of the acetic acid solution
How many joules of energy are used by the flashlight : You have a flashlight that uses 0.75 watts of power and requires 1.5 volt battery, How many joules of energy are used by the flashlight in 15 minutes
Explain oxidation number to show which element is oxidized : use oxidation number to show which element is oxidized and which element is reduced in this equation 2H2o2----2H2O+O2
Explain the crystal lattic structures : describe the crystal lattic structures you examined,indicating the number of positine ions surrounding each negative ion,and vice versa
Describe what is the value of the equilibrium constant : What is the value of the equilibrium constant for the reaction between Al(s) and Cd2+(aq), at 25 °C?
Find the magnitude of the tension in the string : A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed, What is the magnitude of the tension in the string when the ball is at the bottom of the circle

Reviews

Write a Review

Physics Questions & Answers

  What is the frequency of the wave

A cannon tilted upward at = 33 fires the cannonball with a speed of 99. At that instant, what is the component of the cannonball's velocity parallel to the ground.

  What was the speed of the cannon ball

Old naval ships fired 13 kg cannon balls from a 210 kg cannon. It was very important to stop the recoil of the cannon, since otherwise the heavy cannon would go careening across the deck of the ship.

  What is the electric potential v at the origin

In each cycle of its operation, a refrigerator removes 10 J of heat from the inside of the refrigerator and releases 38 J of heat into the room. How much work per cycle is needed to operate this refrigerator.

  What should be coefficient of static friction

What should be coefficient of static friction

  Assume that all the energy goes into the arrow

A 65 kg hiker has fallen down a hole. One rescuer attaches a rope to the injured hiker and then a second rescuer pulls the injured hiker straight up out of the hole at a steady rate. How much force would the second rescuer need to exert on the rope t..

  Llustrate what is the tension in ropes a and b

The first sled is 30kg, connected with rope B to the second sled of mass 20 kg, connected with rope A to the first sled of mass 10 kg, which is being pulled by a rope of 137 N. Illustrate What is the tension in ropes A and B.

  How far will it coast before starting to roll back down

When placed 1.2 m apart, the force each exerts on the other is 12 N and is repulsive. What is the charge on each? What if the force were attractive.

  What is the kinetic energy of truck in kilograms

Imagine a truck with a mass of 30 metric tons (t) (1 t=1,000 kg) barrelling down a highway at a speed of 50 mi/h. What is the truck's momentum in kilograms

  How much time elapses before the apple hits the ground

A 111 gram apple falls from a branch that is 3.5 meters above the ground, How much time elapses before the apple hits the ground

  Find angular speed while on frictionless side of track

A car of mass = 800 travelling at 45.0 enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between the road and the car's tires. What is the radius of the turn if = 20.0 (Assume the car continues in unif..

  What are the magnitude of the force on each charge

Three equal charges are placed at the corners of an equilateral triangle 0.50 m on a side. What are the magnitude of the force on each charge if the charges are each -4.5×10^-9 C?

  Determine the kinetic energy of the aircraft

An aircraft with a mass of 996 kg accelerates from 0 to 87 m/s in 6.2 seconds, at which time the aircraft launches. What is the kinetic energy of the aircraft when the aircraft launches

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