A machine is supplied energy at a rate of 4000 watts and does useful work at a rate of 3761 watts what

is the efficiency of the machine

The milky way appears to us as a patchy and irregular band across the sky. what accounts for this?

The "soft underbelly of the Axis" referred to a. Italy and the Balkans. c. Turkey. b. North Africa. d. the Soviet Union.

Particle A has half the mass and eight times the kinetic energy of particle B. What is the speed ratio vA / vB?

Work occurs when an applied force results in movement of an object in the same direction as the applied force. an object is subjected to balanced forces resulting in movement of the object.

Find the equation for the current through the inductor after the switch is opened

Which of the following is evidence used to support the Big Bang Theory? background radiation increasing distances between galaxies both of the above

Which of the following statements about noncovalent bonding interactions is NOT true? Van der Waals interactions, also known as dispersion forces, are the weakest of the attractive noncovalent bonding interactions.

Does a rising GDP benefit everyone

You have a neutral balloon. What is its charge after 12000 electrons have been removed from it? The elemental charge is 1.6 * 10-19 C. Answer in units of µC.

Which formula can be used to find the x-component of the resultant vector?