Why are scientific models useful

A spring has a force constant of525.6 N/m. Find the potential energy stored in thespring when thespring is ... a) stretched 4.08 cm fromequilibrium. Answer in units of J b) compressed 2.17 cm from equilibrium. Answer in units ofJ c) unstretched.

When combined in the correct ratio, hydrogen and oxygen atoms can form water. These particles that water is made of are example of

A particle with charge - 5.60 nC is moving in a uniform magnetic field →B = - (1.25T) k The magnetic force on the particle is measured to be →F = - (3.40*10-7N) ˆı + (7.

Ina shoots a large marble (Marble A, mass: 0.08 kg) at a smaller marble (Marble B, mass: 0.05 kg) that is sitting still. Marble A was initially moving at a velocity of 0.5 m/s, but after the collision it has a velocity of - 0.1 m/s.

A cowboy at a dude ranch fills a horse trough that is 1.5 m long, 60 cm wide, and 40 cm deep. He uses a 2.0-cm-diameter hose fromwhich water emerges at 1.5 m/s How long does it take him to fillthe trough?

Is the muzzle velocity a scalar or vector quantity?

How many day does it take the sun to came out?

Using the word "more" to mean "I want another cookie" is an example of a (n) :

Ohm's law is I = V : R. What is the current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance? The current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance is (blank) amps.

Why do marine west coast climates have much precipitation