A machine that promises more energy output than input is?

A hungry 181 kg lion running northward at 71.0 km/hr attacks and holds onto a 38.6 kg Thomson's gazelle running eastward at 63.8 km/hr. Find the final speed of the lion-gazelle system immediately after the attack.

The color of a star depends on its (composition, distance, temperature), (red, white, yellow) and - colored stars are the coolest.

What is the weight of a 45.40 kg barbell dropped on earth

The force of friction is in the same direction as the object is moving true false

What two aspects of a force do scientists measure? A. Position and Size B. Size and Stability C. Magnitude and Direction D. Strength and Magnitude

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...