Light strikes a flat mirror with an angle of incidence of 73º. At what angle does it reflect off at?

Large electric fields in cell membranes cause ions to move through the cell wall. The field strength in a typical membrane is 1.

BlackZzzverrR [31]

1) Magnitude of the force: $1.6\cdot 10^{-12} N$

The magnitude of the electric force on an electric charge is:

$F=qE$

where q is the charge and E the electric field. In this problem:

$q = +e = +1.6\cdot 10^{-19} C$ is the charge of the calcium ion

$E=1.0 \cdot 10^7 N/C$ is the magnitude of the electric field

Substituting,

$F=(1.6\cdot 10^{-19}C)(1.0\cdot 10^7 N/C)=1.6\cdot 10^{-12} N$

2) Acceleration: $2.5\cdot 10^{13} m/s^2$

The atomic mass of a calcium ion is approx. 40 a.m.u, this means that its mass is

$m=40 \cdot (1.6\cdot 10^{-27}kg)=6.4\cdot 10^{-26} kg$

And so, the acceleration of the ion is given by Newton's second law:

$a=\frac{F}{m}=\frac{1.6\cdot 10^{-12}N}{6.4\cdot 10^{-26} kg}=2.5\cdot 10^{13} m/s^2$

3) Yes

Explanation: a particle with same charge (+e) of the calcium ion could have the same acceleration of the calcium ion if it has exactly the same mass. In fact, the acceleration depends only on two factors: the mass and the force, so it both are the same, than the acceleration does not change.

4) The mass of the particle

In fact, the acceleration of the particle is given by:

$a=\frac{F}{m}$

where F is the electric force and m the mass. Therefore, if the mass changes ,the acceleration changes as well.

4 0

3 years ago

Why are New Hampshire students required to learn about earths systems

VashaNatasha [74]

Answer:

Explanation:

Why are students in Hawaii required to learn the history of debate surrounding the writing of the first 10 amendments to the constitution? They were not a member of the United States at the time?

The reason they have to learn anything they can about the constitution is because they are governed by it (just as you are).

The reason you have to learn about the Earth's Systems is because currently there is a huge debate about global warming. The problem is that we are not sure what the solution might be and we've already spent billions on reducing our effect on the environment. Billions means your tax dollars (many) or that of your parents. Many scientists are not sure we should be doing anything.

You will enter the work force one day and if you get a good job, you will be taxed. You should never be unaware of what your tax dollars are spent on.

6 0

3 years ago

As you get older your muscles grow. True True False

aleksley [76]

Answer:

f

Explanation:

7 0

3 years ago

Read 2 more answers

Compare the kinematics equation governing the motion y =vf+1/2 gf' and the format of the fit equation that you just made y At +B

lidiya [134]