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3 years ago

Explosion in antarctic sea ice levels may cause another ice age. True or False

Physics

1 answer:

lisabon 2012 [21]3 years ago

8 0

Answer:

True Explosion in antarctic sea ice levels may cause another ice age.

Explanation:

True

Using computer models, the studies show that a rise in sea ice may significantly change the ocean's circulation, ultimately resulting in a reversed greenhouse effect as ocean carbon dioxide rises and air levels decrease.

Some scientists at the University of Chicago said their analysis shows how the rise of Antarctic sea ice in cold climate could cause a cascade of shifts that could lead to turning the global climate towards glacial periods,

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A ball is fixed to the end of a rod and is swung in a circle at a constant rate. Consider four scenarios with differing values f

Mamont248 [21]

Answer:

Explanation:

the answer is found below

5 0

4 years ago

C = speed of light = 3.00 × 108 m/s

Alinara [238K]

The wavelength of the radio broadcast wave given the data is 3.10 m (Option B)

What is wavelength?

ThisThis is simply defined as the distance between two successive crests or trough

Relationships between frequency, wavelength and velocity

The velocity, frequency and wavelength of a wave are related according to the following equation

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

How to determine the wavelength

Velocity (v) = 3×10⁸ m/s

Frequency (f) = 9.67×10⁷ s⁻¹

Wavelength (λ) =?

λ = v /f

λ = 3×10⁸ / 9.67×10⁷

λ = 3.10 m

Learn more about wave:

brainly.com/question/14630790

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3 0

2 years ago

A stationary 10 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the s

CaHeK987 [17]

Answer:

2.04m/s²

Explanation:

Complete Question

A stationary 10 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the surfaces is 0.2. A horizontal force of 40 N is applied to the object. Find the acceleration of the object.

According to Newtons second law;

\sum F_x = ma_x

F_m - F_f = ma_x

Fm is the applied force

Ff is the frictional force

m is the mass

a is the acceleration

Substitute the given values

40N - nmg = 10a

40 - 0.2(10)(9.8) = 10a

40 - 19.6 = 10a

20.4 = 10a

a = 20.4/10

a = 2.04m/s²

Hence the acceleration of the object is 2.04m/s²

5 0

3 years ago

During an auto accident, the vehicle’s air bags deploy and slow down the passengers more gently than if they had hit the windshi

const2013 [10]

Answer:

0.381 m

Explanation:

Distance traveled S is found by

$S = ut + \frac{1}{2}a{t^2}$

Where S is distance traveled, u is initial velocity, t is time, a is acceleration

Since we acceleration a is given as 60g, where g is gravitational constant of 9.81 then a=60*9.81=588.6

The initial velocity u is zero hence ut=0

Substituting a with 588.6, t with 36 ms

$\begin{array}{c}\\S = 0 + \frac{1}{2}\left( {588.6 {\rm{m/}}{{\rm{s}}^2}} \right){\left( {\left( {36 {\rm{ms}}} \right)\left( {\frac{{1 {\rm{s}}}}{{{{10}^3} {\rm{ms}}}}} \right)} \right)^2}\\\\ = 0.3814128
{\rm{m}}\\\end{array}$

S=0.381 m

4 0

3 years ago

Consider the displacement vectors Ā=(i +6j)m, B = (3i– 7j)m,

andrezito [222]

Answer:

Dx = -0.5

Dy = -0.25

Explanation:

Two vectors are given in rectangular components form as follows:

A = i + 6j

B = 3i - 7j

It is also given that:

A - B - 4D = 0

so, we solve this to find D vector:

(i + 6j) - (3i - 7j) - 4D = 0

- 2i - j = 4D

D = - (2/4)i - (1/4)j

D = - (1/2)i - (1/4)j

D = - 0.5i - 0.25j

Therefore,

Dx = -0.5

Dy = -0.25

8 0

4 years ago