Heating the gas in an air balloon makes the balloon rise because the gas in theballoon becomes lighter than natural air. The heated gas has less mass per unit of volume than that of the cool air surrounding the balloon. Hope this answers the question.

3 0

3 years ago

Find the slope of the line containing the two points (1,−1) and (−5,−3).

11111nata11111 [884]

Answer:-4/-6. Simplify to 2/3

Explanation:

Y2-Y1/X2-X1=slope

8 0

3 years ago

What is the Doppler effect used by weather forecasters to measure?

marta [7]

Answer:

Moving clouds

Explanation:

6 0

3 years ago

a physics student throws a stone horizontally off a cliff. one second later, he throws a second identical stone in exactly the s

Virty [35]

The second stone hits the ground exactly one second after the first.

The distance traveled by each stone down the cliff is calculated using second kinematic equation;

$h = v_0_yt + \frac{1}{2} gt^2$

where;

t is the time of motion
$v_0_y$ is the initial vertical velocity of the stone = 0

$h = \frac{1}{2} gt^2$

The time taken by the first stone to hit the ground is calculated as;

$t_1 = \sqrt{\frac{2h}{g} }$

When compared to the first stone, the time taken by the second stone to hit the ground after 1 second it was released is calculated as

$t_2 = \sqrt{\frac{2h}{g} } + 1$

$t_2 = t_1 + 1$

Thus, we can conclude that the second stone hits the ground exactly one second after the first.

"Your question is not complete, it seems be missing the following information;"

A. The second stone hits the ground exactly one second after the first.

B. The second stone hits the ground less than one second after the first

C. The second stone hits the ground more than one second after the first.

D. The second stone hits the ground at the same time as the first.

Learn more here:brainly.com/question/16793944

8 0

3 years ago