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3 years ago

Helppppp What is global warming

2 answers:

5 0

A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.

Allushta [10]3 years ago

4 0

It’s an increase in the overall temperature of the earths atmosphere

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The Hubble Telescope The Hubble Telescope is a large telescope that orbits Earth. It was named after Edwin Hubble. Hubble was an

Marrrta [24]

Quoting from the article itself:

"Since it is above Earth's atmosphere, it gives us clearer pictures of space than telescopes on Earth can."

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3 years ago

Suppose that a car performs a uniform acceleration of 0.42 m/s from rest to 30.0 km/h in the first stage of its motion (From poi

kifflom [539]

Answer:

a)Total distance = 399. 5 m

b)Total time =51.51 sec

c)Average speed = 7.75 m/s

Explanation:

For A to B:

$S=ut+\dfrac{1}{2}at^2$

$v^2=u^2+2as$

v= u + at

8.33 = 0.42 x t

t=19.83 sec

1 Km/h=0.27 m/s

30 Km/h=8.33 m/s

$8.33^2=2\times 0.42\times s$

s=82.6 m

For B to C

V= 8.33 m/s

s= V x t

s=8.33 x 30

s=249.9 m

For C to D

$S=ut-\dfrac{1}{2}at^2$

v= u - at

Final speed v=0

s=v x t/2

7= 8.33 x t/2

t=1.68 sec

Total distance = 82.6 + 249 .9 +7

Total distance = 399. 5 m

Total time = 19.83 + 30 + 1.68

Total time =51.51 sec

Average speed =Total distance/Total time

Average speed = 399.5/51.5

Average speed = 7.75 m/s

6 0

3 years ago

Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and the volume V satisfy th

jarptica [38.1K]

Answer: The volume is decreasing at a rate of 80 cm3/min

Explanation: Please see the attachments below

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3 years ago

What best describes gravity?

Flura [38]

A fundamental force , is your answer .

4 0

3 years ago

Read 2 more answers

A student throws a set of keys vertically upward to his fraternity brother, who is in a window 4.00 m above. The brother’s outst

MakcuM [25]

Answer:10.02 m/s

4.68 m/s

Explanation:

Given

height of building=4 m

time taken=1.5 s

(a)Let u be the initial velocity

using equation of motion

$s=ut+\frac{gt^2}{2}$

$4=u\times 1.5-\frac{9.81\times 1.5^2}{2}$

$8=u\times 3-9.81\times 2.25$

u=10.02 m/s

(b)Velocity of keys just before keys were caught

$v^2-u^2=2as$

$v^2=10.02^2-2(-9.81)\cdot 4$

$v^2=21.92$

$v=\sqrt{21.92}=4.68 m/s$

3 0

3 years ago