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4 years ago

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include what?

Physics

1 answer:

Bingel [31]4 years ago

7 0

Answer:

Carbon, nitrogen and sulphur.

Explanation:

In carbon cycle, carbon dioxide is in the gaseous form in atmosphere. This gaseous carbon dioxide is emitted in the atmosphere through combustion of fossils, respiration, decomposition. In nitrogen cycle, atmospheric nitrogen is in the gaseous form which is emitted through denitrification. In sulphur cycle, sulphur is in the form of gaseous sulphur dioxide in the atmosphere. This sulphur is emitted in the atmosphere by the volatilization of hydrogen sulphide.

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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

A baseball has mass 0.145 kg.

Vesnalui [34]

Answer:

a).p=15.67kg*m/s

b). F=7.83N

Explanation:

change in momentum is the subtraction from "after momentum" of the "before momentum" as momentum is a vector quantity this is a vector subtraction.

initial momentum of ball

m1v1 = (0.145)(44.0) = 6.38 kg-m/s

after momentum

m1v2 = (0.145)(64.0) = 9.28 kg-m/s

since these momentums are 180° opposite one must be called negative so their difference

6.38+9.28= 15.67 kg-m/s

change in momentum = 15.67 kg-m/s ANS a1

Impulse = change in momenutm = 15.67 ANS a2

Impulse =Favg*t

I=(2.00)Favg

Impulse from (a2) = 15.67

Favg = 15.67/2.00 =

F= 7.83 N

3 0

4 years ago

Why is the mechanical advantage of a bottle opener always greater than 1?

Katen [24]

For a lever, the mechanical advantage is the ratio of the lever arms. Since the lever arm of the opener is always greater than that of the output arm, the mechanical advantage is greater than 1.

6 0

3 years ago

What is the electric force acting between two charges of -0.0050 C and

love history [14]

The electric force is $-3.6\cdot 10^8 N$ (attractive)