Who discovered that sunlight is made of all the colors of the rainbow?

a. newton

c. kepler

b. galileo

d. brahe

What are the changes of state

What is the energy stored in the 10.5 μ F 10.5 μF capacitor of a heart defibrillator charged to 8250 V?

Because there is very little friction, the lever is an extremely efficient simple machine. using a 90.0% efficient lever, what input work is required to lift a (n) 19.0 kg mass through a distance of 45 cm? 3232 incorrect: your answer is incorrect.

The angle of incidence must equal the angle of reflection is always less than the angle of reflection is always greater than the angle of reflection may be greater than, less than, or equal to the angle of reflection

Two cars collide inelastically and stick together after the collision. Before the collision, the magnitudes of their momenta are P1 and P2.

How does a change in resistance affect the conductivity of a material? A) The lower the resistance, the worse the conductivity B) The lower the resistance, the better the conductivity C) The higher the resistance, the better the conductivity D) The

Two railroad cars, each of mass 6500 kg and traveling 80 km/h in opposite directions, collide head-on and come to rest. how much thermal energy is produced in this collision?

What is a result of using a machine?

A boy rides motorbike with velocity of 20 m/s He accelerates his motorbike to a velocity of 30 m/s for 5 second. Calculate the acceleration produced in the motorbike. [Ams 2ms

How is a star's emission spectrum used to study stars?