What is the de Broglie wavelength , in nanometers of an electron accelerated by a potential difference of 0.90 V? A 2.3 nm

B 3.2 nm

C 6.4 nm

D 1.3 nm​

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is