Answer:
Force used by fire extinguisher = 60 N
Explanation:
Given:
Mass of skateboard with fire extinguisher = 50 kg
Acceleration of fire extinguisher = 1.2 m/s²
Find:
Force used by fire extinguisher = ?
Computation:
⇒ Force = Mass × Acceleration
⇒ Force used by fire extinguisher = Mass of skateboard with fire extinguisher × Acceleration of fire extinguisher
⇒ Force used by fire extinguisher = 50 kg × 1.2 m/s²
⇒ Force used by fire extinguisher = 60 N
Answer:
C
Explanation:
75 mile shallow flat area just off coastlines
The answer would be 6 e-. This is becuase you are turning a charge of -4 into a +2. In order to do this, you transfer 4 electrons for a neutral charge, and an additional 2 for a charge of +2.
This makes a total charge of +2, and the total transferred electrons 6 e-
Answer: The de broglie wavelength is
.
Explanation:
Calculate
as follows.
![\lambda = \frac{h}{p}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7Bh%7D%7Bp%7D)
where,
h = plank's constant = ![6.6 \times 10^{-34} m^{2} kg/s](https://tex.z-dn.net/?f=6.6%20%5Ctimes%2010%5E%7B-34%7D%20m%5E%7B2%7D%20kg%2Fs)
p = momentum = ![mass \times velocity](https://tex.z-dn.net/?f=mass%20%5Ctimes%20velocity)
Putting the values in the formula as follows.
![\lambda = \frac{h}{mass \times velocity}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7Bh%7D%7Bmass%20%5Ctimes%20velocity%7D)
=
= ![2.037 \times 10^{-34} m](https://tex.z-dn.net/?f=2.037%20%5Ctimes%2010%5E%7B-34%7D%20m)
Thus, the de broglie wavelength is
.