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ad-work [718]
3 years ago
13

Which of the following processes forms clouds A. Boiling B.Condensation C.Freezing D.Precipitation

Physics
2 answers:
love history [14]3 years ago
6 0

Answer:

B

Explanation:

Anna007 [38]3 years ago
5 0

Answer:

B

Explanation:

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Which situation describes a system with decreasing gravitational potential energy?
umka2103 [35]
An example of a system with decreasing gravitational potential energy is a ball in free fall. 

At its initial height h, the ball has a gravitational potential energy equal to
U=mgh
where m is the ball mass and g is the gravitational acceleration. As the ball falls toward the ground, its height h decreases, and so its gravitational potential energy decreases as well, according to the formula 
U=mgh'
where h' is the new height of the ball.
8 0
3 years ago
Which creates energy used by the other system to help you exercise?
jasenka [17]

Answer:

There are many different systems involved in when we exercise, the three main ones are the Respiratory system which is involved in breathing the circulatory system which is about circulation of blood around the body and finally the muscular system and finally the Muscular system which is about how we move.

Explanation:

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8 0
3 years ago
Read 2 more answers
A 1400.0 kg car crests a 3200.0 m pass in the mountains and briefly comes to rest. The car descends 1000 m before climbing and c
rjkz [21]

Answer:

a) v = 88.54 m/s

b) vf = 26.4 m/s

Explanation:

Given that;

m = 1400.0 kg

a)

by using the energy conservation

loss in potential energy is equal to gain in kinetic energy

mg × ( 3200-2800) = 1/2 ×m×v²

so

1400 × 9.8 × 400 = 0.5 × 1400 × v²

5488000 = 700v²

v² = 5488000 / 700

v² = 7840

v = √7840

v = 88.54 m/s

b)

Work done by all forces is equal to change in KE

W_gravity + W_non - conservative = 1/2×m×(vf² - vi²)

we substitute

1400 × 9.8 × ( 3200-2800) - (5 × 10⁶) = 1/2 × 1400 × (vf²  -0 )

488000 = 700 vf²

vf² = 488000 / 700

vf² = 697.1428

vf = √697.1428

vf = 26.4 m/s

4 0
4 years ago
When the driver is disturbed by emotions this manifest itself by decreased risk behavior true or false?
Alina [70]
I believe your answer is false


5 0
3 years ago
A nonconducting solid sphere of radius 8.40 cm has a uniform volume charge density. The magnitude of the electric field at 16.8
mina [271]

Answer:

The sphere's volume charge density is 2.58 μC/m³.

Explanation:

Given that,

Radius of sphere R= 8.40 cm

Electric field E= 2.04\times10^{3}\ N/C

Distance r= 16.8 cm

We need to calculate the sphere's volume charge density

Using Gauss's law

\int{\vec{E}\cdot\vec{da}}=\dfrac{Q_{enc}}{\epsilon_{0}}

E\times 4\pi r^2=\dfrac{1}{\epsilon_{0}}\times\dfrac{4}{3}\piR^3\rho

E=\dfrac{\rho R^3}{3\epsilon_{0}r^2}

\rho=\dfrac{3\times E\times\epsilon_{0}r^2}{R^3}

Put the value into the formula

\rho=\dfrac{3\times2.04\times10^{3}\times8.85\times10^{-12}\times(16.8\times10^{-2})^2}{(8.40\times10^{-2})^3}

\rho=2.58\times10^{-6}\ C/m^3

\rho=2.58\ \mu C/m^3

Hence, The sphere's volume charge density is 2.58 μC/m³.

5 0
4 years ago
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