PLEASE HELP!!!!!!




Is this correct?

Answer:

D

Explanation:

forecasted for the miscommunication between range and the other day

Answer:

wnd change

Explanation: wnd chsnge

Answer:

yes

Explanation:

yes

Answer:

Plasma is a phase of matter that makes up stars.

Answer:

14 m/s^2

Explanation:

We have to use the equation F=ma because the question is a Newton's second law question.

First, list known values

F (force) = 70 N

m (mass) = 5 kg

a (acceleration) = ? (we have to solve for this)

Second, plug in known values into equation.

F=ma

70=5a

Third, solve. To solve this all you have to do is divide both sides by 5

70/5=5/5a

Fourth, your answer will be 14 meters per second squared  (m/s^2)

I hope this answer helps and have a great day!

Answer:

needs to know direction

Answer:

2.28m/s^2

Explanation:

F=ma

a=F/m

a=7.3/3.2

a=2.28m/s^2

Answer:524 Hz

Explanation:

Approximate frequency, heard in other car, when two car approaches each other, before they cross each other is 524 Hz.

Frequency of wave is the number of waves, which is passed thorough a particular point at a unit time.

For the two cars approaching each other the Doppler formula to find the frequency of second car is given as,

[tex]f_2=\dfrac{V_s+V_2}{V_s-V_1}f_1[/tex]

Here, [tex]V_s[/tex] is the speed of the sound.

Two cars approach each other from opposite directions.The velocity of car one is 54 km/h and the velocity of the car two is also 54 km/h.

Convert the unit of velocity of the car as,

[tex]\rm 54km/s=54\times\dfrac{5}{18}m/s\\\rm 54km/s=15m/s[/tex]

As we know that the speed of the sound is 340 m/s and one of the cars emits a note of frequency 480 Hz.

Thus, putting the values in the above formula to find out the frequency heard in the other car before they cross each other as,

[tex]f_2=\dfrac{340+15}{340-15}480\\f_2=524.3\rm Hz[/tex]

The approximate frequency heard in the other car before they cross each other is 524 Hz.

Learn more about the frequency here;

https://brainly.com/question/1436295

Answer:

We answer that before but I forgot

Answer:

violet

Explanation:

force = 75N --- (given)

acceleration = 3m/s² ---- (given)

75N = mass × 3m/s²

mass = 75÷3

Answer:

B) Blinking .

Explanation:

Answer:

v = 1.098 m/s

Explanation:

Given that,

A person walks 750m due north then 250 m due east of the entire walk takes 12 min.

We need to find the average velocity of the person.

Displacement,

[tex]d=\sqrt{750^2+250^2} \\\\d=790.56\ m[/tex]

Average velocity = displacement/time

[tex]v=\dfrac{790.56\ m}{12\times 60\ s}\\\\v=1.098\ m/s[/tex]

So, the average velocity of the person is 1.098 m/s.

Answer:

λ = 3,5  10⁻⁷ m

Explanation:

El fenómeno de difracción es descrito por la expresión

        a sin θ = m λ

usemos trigonometría para encontrar el sino

        tan θ = y/L

        tan θ = sin θ /cos θ

los experiemtos de difraccion ocurran para langulos pequeños

        tan θ = sin θ

        sin θ =y/L

substituimos

        a y/L = m λ

        λ = a y /m L

calculemos

        λ = 0,01 10-3 0,035 / 2 0,5

        λ = 3,5  10⁻⁷ m

When conducting an experiment, a scientist should exhibit all of these traits except bias. Thus, the correct option for this question is A.

The properties of scientists are as follows:

If scientists have properties of bias and discrimination, they never work consistently and are focused because their biased behavior ruins their interest, talent, and future perspectives.

Therefore, when conducting an experiment, a scientist should exhibit all of these traits except bias. Thus, the correct option for this question is A.

To learn more about Scientists, refer to the link:

https://brainly.com/question/26386481

#SPJ2

Answer:

Distance: 21km

Displacement: ~16.76km

Answer:

Explanation:

The acceleration of gravity is 9.8m/s^2.

So to calculate the time it will take to make the ball stop(which btw means the ball now reach its greatest height), use the formula V1=V0+at. V1 is the final velocity(which is 0), V0 is the starting velocity(which is 30m/s), and the a(cceleration) is 9.8m/s^2.

(You can ignore the fact "at" is -30 instead 30, it's because the directions two velocity travel are opposite. )

We can now know the time it takes to make the ball stop just by the gravitational force is about 3 sec.

Use another formula S=1/2at^2, to find out the S(height) is 1/2*9.8*3^2=44.1, which is approximately D.45m .

Answer:

3

Explanation:

it's too because on you measuring mass of something

Answer:

t = 1023.9 seconds

Explanation:

Given that,

The average velocity of a Mustang, v = 33m/s

Distance, d = 21 miles = 33789 m

Let the driver takes t seconds. So,

Speed = distance/time

[tex]t=\dfrac{d}{v}\\\\t=\dfrac{33789}{33}\\\\t=1023.9\ s[/tex]

So, it will take 1023.9 seconds to complete the course.

Answer:

The force applied to any falling object would be gravity. An object cannot fall if there is not gravity; it would simply float.

Answer:

True

Newton's Rainbow. In the 1660s, English physicist and mathematician Isaac Newton began a series of experiments with sunlight and prisms. He demonstrated that clear white light was composed of seven visible colors.

Explanation:

Hope it helps

Answer:

f(3) = 362.32 Hz

Explanation:

the formula of frequency of open pipe is

f(n) = (n+1)v/2L

n = 0,1,2,3,... (the order)

0 for the first

1 for the second

v = speed of sound

L = the lenght of pipe

f(3) = (2+1) * 343 / 2 * 1,42

f(3) = 3 * 343 / 2.84

f(3) = 362.324 Hz (or you can write 362.32 Hz

Answer: 362.32

Explanation:

Answer:

true , I searched and got u the answer

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Answer: 11.8 m/s

Explanation: Multiply the height, 1.20 m by 9.8. This is because on earth free falling objects have a speed of 9.8 m/s^2 downward.

Answer:

-24 from the solution I got using this formula pe=mgh and pe=0 then make g as a subject of the formula

Answer:

1/4 as much

Explanation:

I don't know the explanation