A 2.75 kg sample of a substance occupies a volume of 250 cm³ . Find the density in g/cm³ and kg/m³

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When a river or stream flows downward into a basin that is surrounded by high ground on all sides, what can form?

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When a river or stream flows downward into a basin that is surrounded by high ground on all sides, a waterfall can form. The answer to the question above is 'waterfall' or 'waterfalls'. I hope this helps you on your assignments. You're welcome!

A car traveling at 10 m/s starts to decelerate steadily. It comes to a complete stop in 20 seconds. What is the acceleration?

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Answer:

$a= 0.5 m/s^(2)$

Explanation:

Your initial velocity ( $V_(o)$ ) is 10 m/s, your time is 20 seconds. Although it is not explicitly mentioned in the problem, since you know the car comes to a stop, your final velocity ( $V_(f)$ ) is 0 m/s.

The equation you can use to solve for acceleration (a) is $V_(f) = V_(o) +at$

1. Plug in the numbers you do have, so your equation will look like this:

0=10+a(20)

2. Solve for a.

-10= 20a

-10/20=a

-0.5= a

a = -0.5 $m/s^(2)$

When a star is in the main-sequence stage of its life, it is fusing __________ into ________

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hydrogen into helium

At what speed v will the length of a 1.00 m stick look 13.7 % shorter (86.3 cm )Using formula L=Lp sqrt 1-v^2/c^2

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L= Lp - 13.7*Lp/100 = Lp-0,137Lp = 0,8613Lp

⇒L/Lp = 0.8613

From the formula above L/Lp = √(1-v^2/c^2)

(L/Lp)^2 = 1 - (v^2/c^2)

v^2/c^2 = 1 - (L/Lp)^2

v/c = √[1 - (L/Lp)^2]

v = c √[1-(L/Lp)^2]

v =c√[1-0.8613^2] = 0.508c

In the vacumm speed of light, c, is approx 300,000,000 m/s

v =0.508 (300,000,000m/s) =152,400,000 m/s

Please, let me know if this helped you.

You run straight off a high diving board at a speed of 6 m/sec. You hit the water 2 seconds later.a. How far did you travel horizontally during the 2 seconds?
b. How far did you travel vertically during the 2 seconds?
c. How fast were you moving horizontally when you hit the water?
d. How fast were you moving vertically when you hit the water?

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My answers are in the comments. Sorry for the repeated answers on some of them

PLEASE HELP ASAP!!!!!

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Answer:

MOSE

Explanation:

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A train starting from a distance of velocity of 90 km.h-1 in 10 minutes assuming that the acceleration is uniform find the acceleration and the distance travelled by the train for attending the velocity