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3 years ago

10

Edwin Hubble was one of the first scientists to show that galaxies are getter farther apart from each other. (A.) True (B.) Fals

e

2 answers:

lara [203]3 years ago

5 0

The answer is A: True

i hopes this helps :D

grandymaker [24]3 years ago

5 0

The answer is True becuase

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A gas is enclosed in a confainer fitted with a piston of cross sectional area 0.10 the pressureof the gas is maintained in 8000

Arlecino [84]

Answer:

10 Joule

Explanation:

The solution and answer are well written in the Pic above.

6 0

3 years ago

When you drop a 0.37kg apple earth exerts a force on it that accelerates it at 9.8m/s^2 toward the earths surface. According to

Delvig [45]

force applied due to earth on the apple is given as

$F = ma$

given that

m = 0.37 kg

a = 9.8 m/s^2

now we have

$F = m*a$

$F = 0.37* 9.8 = 3.63 N$

now as per Newton's III law equal and opposite force is applied on earth

so now we can find acceleration of Earth using same equation as we used above

$F = ma$

here we know that

m = mass of earth

F = 3.63 N

$3.63 = 5.98 * 10^{24} * a$

$a = \frac{3.63}{5.98 * 10^{24}$

$a = 6.1 * 10^{-25} m/s^2$

so acceleration of earth is very small and given by above value

5 0

3 years ago

A 9 µF capacitor and a 16 H inductor are connected in series with a 60 Hz source whose rms output is 116 V. Find the rms current

AfilCa [17]

Answer:

19.2 mA

Explanation:

C = 9 micro farad = 9 x 10^-6 F

L = 16 H

f = 60 Hz

Vrms = 116 V

$X_{L}=2\times \pi \times f\times L$

$X_{L}=2\times 3.14 \times 60 \times 16$

XL = 6028.8 ohm

$X_{C}=\frac{1}{2 \times \pi \times f \times C}$

$X_{C}=\frac{1}{2\times 3.14 \times 60 \times 9 \times 10^{-6}}$

Xc = 294.88 ohm

Let Z be the impedance of the circuit.

$Z=\sqrt{X_{L}^{2}+X_{C}^{2}}$

$Z=\sqrt{6028.8^{2}+294.88^{2}}$

Z = 6036 ohm

$I_{rms}=\frac{V_{rms}}{Z}$

$I_{rms}=\frac{116}{6036}$

Irms = 0.0192 A

Irms = 19.2 mA

6 0

4 years ago

1. When an individual suffers from anxiety severe enough to ____________, he might be suffering from an anxiety disorder. (Point

zheka24 [161]

The answers to these questions are:

1. <span>When an individual suffers from anxiety severe enough to DISRUPT HIS DAILY LIFE, he might be suffering from an anxiety disorder.

2. 19 MILLION </span><span>people in the United States suffer from anxiety disorders.

3. I</span><span>f a patient complains that whenever he has to get on a plane he begins to sweat, have chest pain, and nausea, he is most likely suffering from PANIC DISORDER.

4. THAT IT RUNS IN FAMILIES. A lot of researchers and medical professionals believe that anxiety may be hereditary.
</span><span>
5. ANXIETY </span><span>is a state of intense apprehension, uncertainty, and fear resulting from the anticipation of a threatening event or situation.

6. </span><span>A twin is MORE likely to suffer from an anxiety disorder if the other twin has some form of anxiety disorder.

7. </span><span>Generalized Anxiety Disorder (GAD) is characterized by PROLONGED AND EXCESSIVE WORRY EVEN WHEN THERE IS NO APPARENT CAUSE FOR CONCERN.

8. </span><span>Specific Phobia is characterized by EXAGGERATED OR IRRATIONAL FEAR OF OBJECTS OR SITUATIONS THAT ARE NOT GENERALLY HARMFUL.

9. </span>Post-Traumatic Stress Disorder (PTSD) is characterized by <span>FLASHBACKS OR NIGHTMARES.

10. </span>Obsessive-Compulsive Disorder is characterized by OBSESSIVE, IRRATIONAL THOUGHTS THAT INCREASE/INTENSIFY FEELINGS OF ANXIETY.

These answers are based from what I understand from various sources. Hope this helps. :)

8 0

4 years ago

Read 2 more answers

The skateboarder has a mass of 100 kg. When traveling downward from E to D, he reaches a velocity of 11 m/s. Calculate his kinet

patriot [66]

6050 J is the kinetic energy at D

<u>Explanation:</u>

In physics, the object's kinetic energy (K.E) defined as the energy it possesses during movement. It can be defined as the required work to accelerate a certain body weight in order to rest at a certain speed. When the body receives this energy as it speeds up (accelerates), it retains this energy unless speed varies. The equation is given as,

$K . E=\frac{1}{2} \times m \times v^{2}$

Where,

m - mass of an object

v - velocity of the object

Here,

Given data:

m = 100 kg

v = 11 m/s

By substituting the given values in the above equation, we get

$K . E=\frac{1}{2} \times 100 \times(11)^{2}=\frac{1}{2} \times 100 \times 121=\frac{12100}{2}=6050\ \mathrm{J}$

6 0

4 years ago