Que es un kilogramo fuerza.?

An engine uses 5280 j of input heat to do 702 j of work. what is its actual efficiency'

a subsrance has an atomic number of 80. How many protons and electrons do atoms of the substance have? what is the subsance?

What is the kinetic energy of a 55 kilogram skier traveling at meters per second

A marble is dropped from a toy drone that is 25 m above the ground, and slowly rising with a vertical velocity of 0.8 m/s. How long does it take the marble to reach the ground?

What does Newton's first law describe A. The relationship between force, mass and acceleration B. Action-reaction pairs C. How friction and the normal force are related D. How inertia affects the motion of an object

If wavelength is kept constant, which increases as the speed of a wave increases? Question 13 options: period frequency amplitude phase

If the masses of an object increase and their distance from each other stays the same the force of gravity decreases increases stays the same increases then decreases

Which are strong bases? Check all that apply. HCI NaOH NH3 H2CO3 ΠΗΝΟΣ OKOH

The universal force that is effective over the longest distance is called? A:electromagnetic B: strong nuclear C: weak nuclear D: gravity

What is a string theory?