Atomic and Nuclear Physics Answers

As Boron absorbs neutron, what happens then to Boron? Does it become excited or something else happens?

The radius of hydrogen atom is 0.43 ×10¹² m convert it in cm,mm,nm

A pair of charged conducting plates produces a uniform field of Eo = 10,859 N/C directed to the right, between the plates. The separation of the plates is L = 37 mm. In Figure, an electron (e = - 1.6 x 10-19 C; m = 9.1 x 10-31 kg) is projected from plate A, directly toward plate B, with an initial velocity of Vo = 2.1×107 m/s. The velocity of the electron (expressed in general form as a whole number) as it strikes plate B is what?

Select 4 tests that need to be conducted on diagnostic radiographic systems or on fluoroscopic equipment

NaCl has a melting point of 800 ºC and MgO has a melting point of 2800 ºC.
How would you explain these facts?

State the selection rules for allowed transitions in multi electrons atom

The de Broglie wavelength of an electron in the first Bohr orbit is

Physics Iceberg question?

The volume of an iceberg is 664,000 ft^3.

(a)
What is its weight (in lb), assuming it is pure ice? (Round your answer to at least four significant figures.)
____ lb

(b)
What is the volume of seawater (in ft^3) it displaces when floating? (Hint: You know what the weight of the seawater is. Round your answer to at least three significant figures.)
____ ft cubed

(c)
What is the volume of the part of the iceberg out of the water (in ft^3)?
____ ft cubed

Thank you for the help!

Physics buoyancy question?
t
A juniper-wood plank measuring 0.46 ft by 1 ft by 14 ft is totally submerged in water.

(a) What is its weight?

_____ lb

(b) What is the buoyant force acting on it?

_____ lb

(c) What is the size and the direction of the net force on it?
size
_____ lb

... direction up or down?

Physics question?

A large tanker truck can carry 21 tons (42,000 lb) of liquid.

(a)
What volume of antifreeze (in ft^3) can it carry?

_____ f^t3

(b)
What volume of pure water (in ft^3) can it carry?

_____ ft^3