3 years ago

With regard to the pH scale, a solution with a pH

Physics

1 answer:

Montano1993 [528]3 years ago

6 0

Close to 14 is considered a strong base.

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3. What do we call the ONLY part of the electromagnetic spectrum that we can

otez555 [7]

Answer:

Visible Light

wavelength = 4000 - 7000 Angstroms = 400 - 700 milli-microns

1 A unit = 10^-10 m

1 mμ = 10^-9 m

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2 years ago

If 7 ounces of a sports drink contains 110 milligrams of sodium, what is the total number of milligrams of sodium in 20 ounces o

ehidna [41]

so you just take 110 divided by 7 and then you get the answer and times tthat by 20 and you get you answer which is 314.28 milligrams of sodium in 20 ounces of the sports drink.

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3 years ago

An object is launched with a vertical velocity of 44.3 m/s upward, and a horizontal velocity of 12 m/s. What is the maximum heig

Brrunno [24]

b is the answer there you go if you need the answer

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3 years ago

Two people carry a heavy electric motor by placing it on a light board 2.45 m long. One person lifts at one end with a force of

maxonik [38]

Answer:

W=1055N

Explanation:

In order to solve this problem, we must first do a drawing of the situation so we can visualize theh problem better. (See attached picture)

In this problem, we will ignore the board's weight. As we can see in the free body diagram of the board, there are only three forces acting on the system and we can say the system is in vertical equilibrium, so from this we can say that:

$\sum F=0$

so we can do the sum now:

$F_{1}+F_{2}-W=0$

when solving for the Weight W, we get:

$W=F_{1}+F_{2}$

and now we can substitute the given data, so we get:

W=410N+645N

W=1055N

5 0

4 years ago

The potential difference between A and B is 5.0 V. A proton starts from rest at A. When it reaches B what is its kinetic energy?

Aleksandr [31]

Answer:

total kinetic energy is 8 × $10^{-19}$ J

Explanation:

given data

potential difference = 5 V

e = 1.60 × $10^{-19}$ C

to find out

what is kinetic energy

solution

we will apply here conservation of energy that is

change in potential energy is equal to change in kinetic energy

change potential energy is e × potential difference

change potential energy = 1.60 × $10^{-19}$ × 5

change potential energy = 8 × $10^{-19}$ J

so change in kinetic energy = 8 × $10^{-19}$ J

and we know proton start from rest that mean ( kinetic energy is 0 ) so

change in KE is total KE

total kinetic energy is 8 × $10^{-19}$ J

3 0

4 years ago