Carlotta does 2000 j of work on a machine. The machine does 500 J of work what is the efficiency of this machine

What 2 types of evidence are used to classify organisms

How is the resistor of a 40v lamp higher then the resistor of a 60v lamp?

A scientist's open - mindedness should always be balence do by bias true or false

Consider a small but known volume of metal that has a large thermal conductivity. (a) Since the thermal conductivity is large, spatial temperature gradients that develop within the metal in response to mild heating are small.

A body of mass m=1kg is moving straight-line and its path as a function of time is given by the following function: s = A - Bt+Ct - Dr, here C=10m/s2 and D=1m/s3 are some constants.

A rectangular block has dimensions 2.9 cm x 3.5 cm x 10.0 cm. the mass of the block is 615.0 g. what is the volume and density of the block? (answer it with correct numbers of significant figures)

Which of the following are products of cellular respiration? Sunlight Oxygen ATP Water Carbon Dioxide

Do magnetic field lines ever start or end anywhere?

What effect do oceans have on the temperature of coastal areas? A. Ocean breezes warm the coastal land constantly. B. Ocean currents always cool a coastline. C. Ocean winds prevent extremes of temperature on coastal lands. D.

Vf=vi+at solve for t