Advertisements
Advertisements
Question
Name the device or machine which convert :
Electrical energy into sound energy.
Advertisements
Solution
A speaker in radio and television converts electrical energy into sound energy.
APPEARS IN
RELATED QUESTIONS
In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.
A ball of mass 0.20 kg is thrown vertically upwards with an initial velocity of 20 m s-1. Calculate the maximum potential energy it gains as it goes up.
State whether the object possess kinetic energy, potential energy, or both :
A stretched spring lying on the ground ____________.
A boy weighing 40 kg makes a high jump of 1.5 m.
What is his potential energy at the highest point? (g = 10 m/s2)
Name the device or machine which convert :
Electrical energy into light energy.
Name the energy transfers which occur when an electric ball rings.
Name the energy transfers which occur when someone speaks into a microphone.
How much energy does a 100 W electric bulb transfer in 1 minute?
A microphone converts :
An automobile engine propels a 1000 kg car (A) along a levelled road at a speed of 36 km h–1. Find the power if the opposing frictional force is 100 N. Now, suppose after travelling a distance of 200 m, this car collides with another stationary car (B) of the same mass and comes to rest. Let its engine also stop at the same time. Now the car (B) starts moving on the same level road without getting its engine started. Find the speed of the car (B) just after the collision.
