A radio transfers 270 J of energy electrically, 94.5 J is transferred by sound. Work out the efficiency of this radio. Give your answer as a decimal.

A large heavy truck smashes into a brick wall totally crumpling the front end. what is the conclusion of this description

Electric fields exist at a distance from two [blank] spheres. a) magnetic b) neutral c) charged

You have a simple circuit that includes a resistance device of 50 ohms, and the current flowing through it is 2.0 amps. Solve for the potential difference of the batteries.

Which of the following statements about elasticity of demand is false? A. A consumer with highly elastic demand for a good is very responsive to price changes. B.

A horse has an acceleration of 2 m/s. of it starts from rest. how fast is it going after 1.7 seconds

Newton's First Law says that an object at rest will stay at rest, and an object in motion will stay in motion unless: Question 1 options: Acted on by a balanced force Acted on by an unbalanced force Acted on by equal forces in opposite direction

Which statement is true for electric field lines? A. Field lines should always be parallel to the equipotential lines. B. Field lines should always be perpendicular to the equipotential lines. C. Field lines should always be parallel to each other.

What distance was an object moved by a force of 40 N if the work was 600 joules

How do I use a metric conversions chart

Do you think Pluto should be considered a planet? Why or why not?