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Veseljchak [2.6K]
4 years ago
15

Light from the sun heats Earth's atmosphere. When the air becomes warmer, it expands. Which type of energy increases to cause th

is expansion?
A. chemical
B. electrical
C. kinetic
D. pontential

Physics
2 answers:
lilavasa [31]4 years ago
7 0
C. kinetic is correct. Light from the sun heats Earth's atmosphere. When the air becomes warmer, it expands. Kinetic energy it increases to cause this expansion. Picture shows to kinetic energy:

Hope it helped you, and have a great day.

-Charlie

VashaNatasha [74]4 years ago
5 0
I think that the answer is C.Kinetic
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. On a safari, a team of naturalists sets out toward a research station located 9.6 km away in a direction 42° north of east. Af
Elden [556K]

Answer:\theta =49.76^{\circ} North of east

Explanation:

Given

Research station is 9.6 km away in 42^{\circ}North of east

after travelling 3.1 km 25^{\circ} north of east

Position vector of safari after 3.1 km is

r_2=3.1cos25\hat{i}+3.1sin25\hat{j}

Position vector if had traveled correctly is

r_0=9.6cos42\hat{i}+9.6sin42\hat{j}

Now applying triangle law  of vector addition we can get the required vector(r_1)

r_1+r_2=r_0

r_1=(9.6cos42-3.1cos25)\hat{i}+(9.6sin42-3.1sin25)\hat{j}

r_1=4.325\hat{i}+5.112\hat{j}

Direction is given by

tan\theta =\frac{y}{x}=\frac{5.112}{4.325}

\theta =49.76^{\circ}

8 0
3 years ago
3730 watts equals about how many horsepower<br><br>A.5<br>B.10<br>C.20<br>D.30
ikadub [295]
<span><span>3,730 W is equal to about 5 horsepower. (4.9982 hp)</span></span>
4 0
3 years ago
Read 2 more answers
Gloria is Latin for what?
max2010maxim [7]

Answer:

Gloria is the anglicized form of the Latin feminine given name gloriae (Latin pronunciation: ['gloːria]), meaning immortal glory; glory, fame, renown, praise, honor.

Explanation:

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5 0
3 years ago
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(a) If your speedometer has an uncertainty of 2.0km/h at a speed of 90km/h, what is the percent uncertainty? (b) If it has the s
Airida [17]

Answer:

a) 2.22 %

b) Range would be 60±1.998 km/h

Explanation:

Percentage uncertainty indicates the error of a reading. With the percentage uncertainty error for a measurement can be calculated.

a) Percentage uncertainty would be

2\times \frac{100}{90}=2.22%

Percent uncertainty is 2.22%

b) For 60 km/h error would be

\frac{2.22}{100}\times 90=1.998

Range would be 60±1.998 km/h

6 0
4 years ago
A uniform meter rule with a mass of 200g is suspended at zero mark pivotes at 22.0cm mark. calculate the mass of the rule.
denpristay [2]

Answer:

The mass of the rule is 56.41 g  

Explanation:

Given;

mass of the object suspended at zero mark, m₁ = 200 g

pivot of the uniform meter rule = 22 cm

Total length of meter rule = 100 cm

0                          22cm                                  100cm

-------------------------Δ------------------------------------

↓                                                                       ↓

200g                                                                 m₂  

Apply principle of moment

(200 g)(22 cm - 0)     = m₂(100 cm - 22 cm)

(200 g)(22 cm) = m₂(78 cm)

m₂ =  (200 g)(22 cm)  / (78 cm)

m₂ = 56.41 g  

Therefore,  the mass of the rule is 56.41 g                                            

3 0
4 years ago
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