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Zolol [24]
3 years ago
5

Interstellar gas clouds may collapse to form stars if they:.

Physics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

interstellar gas clouds may collapse to from a star if they [ecounter a shock wave.]

You might be interested in
Which element has an isotope with 43 neutrons and a mass number of 76?
nexus9112 [7]

Answer:

B. Arsenic

Explanation:

76 - 43 = 33 protons

on a periodic table element 33 is Arsenic

7 0
3 years ago
Two identical waves are moving in the same direction with the same speed. If the amplitude of the combination of the two waves i
umka2103 [35]

Answer:

The phase difference between these two waves is 141.1⁰

Explanation:

The displacement of the wave is given as;

Y = y_xSin(Kx - \omega t)+y_xSin(Kx- \omega t + \phi)\\\\Y = 2y_xCos(\frac{1}{2} \phi)Sine(Kx- \omega t + \frac{1}{2} \phi)

Amplitude, A = 2yₓCos(¹/₂Φ)

Since the amplitude of the combination is 1.5 times that of one of the original amplitudes = yₓ = 1.5 × A = 1.5A

A = 2(1.5A)Cos(¹/₂Φ)

A = 3ACos(¹/₂Φ)

¹/₃ =  Cos(¹/₂Φ)

(¹/₂Φ) = Cos ⁻(0.3333)

(¹/₂Φ) = 70.55°

Φ = 141.1°

The phase difference between these two waves is 141.1⁰

4 0
4 years ago
Scott drives a jeep 12 km east, then 4 km north, then finally 3 km west. He traveled a total distance of:​
horsena [70]

Answer:

Using the pythagoras theorem

S²=9²+4²

S²=81+16

S²=97

S=9.85km.

In finding the direction

tan□=opposite/Adjacent

=4/9

□=23.96

¤=90-23.96

=66.03 degrees

9.85, N 66.03 E

4 0
3 years ago
Jenny wants to determine if a new brand name washing detergent is better than her old detergent she washed ten dirty t-shirts wi
katovenus [111]

Answer:


Independent variable: washer detergent

Dependent varaible: cleaing power of effectivenes of the detergent.


Explanation:


When an experiiment is performed there exists one independent variable, one dependent variable, and some other variables that must be controlled.


The goal of the experiment is to test a hypothesis, which is a statement that relates an effect with a cause and that must be proved true or false.


The effect in the dependent variable, and the cause is the independent variable.


Jenny (the scientist) wants to show how an effect or phenomenun, the dependent variable, is explained by the explanatory, independent, variable.


In the stated experiment, Jenny wants to know how the effectiveness of a new brand detergent and an old one compare with each other. Therefore, she designs a test in which she will determine how the brand of detergent may  explain (explanatory or independent variable) the cleaning power or effectiveness, the dependent variable.


Jenny only can manipulate the independent variable and observe the effect on the dependent variable.


To be conclusive, other variables must be controlled, like the fabric and the amount of dirt of the t-shirts.

4 0
4 years ago
At ground level g is 9.8m/s^2. Suppose the earth started to increase its angular velocity. How long would a day be when people o
Aleks04 [339]
Let s = rate of rotation 
<span>Let r = radius of earth = 6,400km </span>
<span>Then solving (s^2) r = g will give the desired rate, from which length of day is inferred. </span>
<span>People would not be thrown off. They would simply move eastward in a straight line while the curved surface of earth fell away from beneath them.</span>
4 0
3 years ago
Read 2 more answers
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