jaecompetitior

How much is necessary to increase the internal energy of the He + ion , which is in the ground state , so that it can emit a photon corresponding to the H-a line of the Balmer series ?

( Balmer series ) :  656.3 nm ( red , or H-a ) ,

What happens to an object when the force of gravity is equal to the force of air resistance?

whats the answer

Order the transformation that the object underwent start to finish

Which sequence of transformations results in figures that are similar but not congruent?

What is the name of the force with which earth pulls everything towards itself?

Define and explain your favorite mathematical theorem

A moving walkway at an airport has a speed v1 and a lengthL. A woman stands on the walkway as it moves from one endto the other, while a man in a hurry to reach his ? ight walks onthe walkway with a speed of v2 relative to the movingwalkway. (a) How long does it take the woman to travel the distanceL? (b) How long does it take the man to travel thisdistance?

Sound travels at 340 m/s. How long does it take the sound of a starter's pistol shot to travel 1.0 x 102 m?The Concorde, supersonic airliner cruises at 2500 km/h. How long does it take to fly from New York City to London England; a distance of 5150 km?

How do you solve the for the magnitude of 1 vector when you have the components of another vector and the dot product of the 2 vectors?

A°B = -10

B = 3i+10j

|A| = ?

Please help me on 55.

Write the equation for each based upon the graph of its first period.

A wire of length 0.50m carries a current of 0.10A in the positive x-direction, parallel to the ground. If the wire has a weight of 1.0 x 10 ^-2 N, what is the

minimum magnitude magnetic field that exerts a magnetic force on the wire equal to the wire’s weight?

What is 3:4 means to?

Calculate the energy, in joules, of a photon of green light having a wavelength of 562nm?

Please answer a and c 

Calculate the energy of a photon having a wavelength in the following ranges.