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3 years ago

The bright, visible surface of the sun is called the

1 answer:

katrin2010 [14]3 years ago

5 0

The bright, visible surface of the Sun is called corona. The outermost layer of the Sun's atmosphere is called chromosphere.

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A truck hits a brick wall with a force of 120 N. The collision takes 2.0 seconds.

levacccp [35]

Impulse=force*time
impluse=120N*2.0s
impluse=240 Ns

7 0

3 years ago

The electric field between the plates of the cathode ray tube of an older television set can be as high as 2.5x104 N/C. Determin

pentagon [3]

Answer:

(a) $F = -4.01 * 10^{-15} N$

(b) $a = 4.40 * 10^{15} m/s^2$

Explanation:

Parameter given:

Electric field, E = $2.5 * 10^4 N/C$

(a) Electric force is given (in terms of electric field) as a product of electric charge and electric field.

Mathematically:

$F = qE$

Electric charge, q, of an electron = $- 1.602 * 10^{-19} C$

$F = -1.602 * 10^{-19} * 2.5 * 10^4\\\\\\F = -4.01 * 10^{-15} N$

(b) This electrostatic force causes the electron to accelerate with an equivalent force:

F = -ma

where m = mass of an electron

a = acceleration of electron

(Note: the force is negative cos the direction of the force is opposite the direction of the electron)

Therefore:

$-ma = -4.01 * 10^{-15} N\\\\\\a = \frac{-4.01 * 10^{-15}}{-m}$

Mass, m, of an electron = $9.11 * 10^{-31} kg$

=> $a = \frac{-4.01 * 10^{-15}}{-9.11 * 10^{-31}}\\\\\\a = 4.40 * 10^{15} m/s^2$

The acceleration of the electron is $4.40 * 10^{15} m/s^2$

5 0

3 years ago

Mary starts from her house, walks 80 meters south, and stops to chat with her aunt on the sidewalk. After chatting for a few min

Alex

Average speed = (total distance covered) / (time to cover the distance)

Total distance = (80m) + (125m) + (45m) = 250 meters

Overall time = 10 minutes

Average speed = (250 meters) / (10 minutes)

Average speed = 25 meters/minute

Since we're only looking for average speed and not velocity, we don't care about any of the directions, and we don't need to calculate Mary's displacement.

7 0

3 years ago

A molecule of methane gas is shown. What do the red and blue dots represent? A) Protons being shared between the atoms. B) Elect

nalin [4]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

The red and blue dots represent is

Protons being shared between the atoms. The answer is A>

7 0

3 years ago

In an experiment, a research collected the following informationabout a solution made from a certain

velikii [3]

Answer:

salt

Explanation:

6 0

2 years ago