A scientific model doesn't need to be something physical. It can also be mathematical

Why do animals float when they die

What type of star is white in color and relatively dim.?

Distinguish among the three places that volcanoes occur with respect to plate boundaries

An impulse is the product of the on an object and the time during which it is applied

Determine the value of impulse from this graph of momentum vs. time. Momentum (kg. m/s) 0 6 2 4 Time (seconds) A. 9 newton seconds B. 12 newton seconds C. 18 newton seconds D. 20 newton seconds

A rocket with a total mass of 330,000 kg when fully loaded burns all 280,000 kg of fuel in 250 s. The engines generate 4.1 MN of thrust. What is this rocket's speed at the instant all the fuel has been burned if it is launched in deep space?

Un móvil parte del reposo y, al cabo de 5 s, alcanza una velocidad de 5 m/s; a continuación, se mantiene con esa velocidad durante 4 s, y en ese momento frena uniformemente y se detiene en 3 s.

A 2.0-kilogram mass is located 3.0 meters above the surface of Earth. What is the magnitude of Earth's gravitational field strength at this location? (1) 4.9 N/kg (3) 9.8 N/kg (2) 2.0 N/kg (4) 20. N/kg

How long did the astronauts stay on the moon?

Brenda is standing on the beach; the sea is choppy. she observes that the crests of distant waves appear not only smaller, but also closer together than do the crests of waves nearer the beach. this example illustrates a depth cue known as: