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Sophie [7]
3 years ago
5

What is a real life example of something impermeable? (please help now!!) (due tomorrow!!)

Physics
1 answer:
Nutka1998 [239]3 years ago
6 0
Impermeable is a substance that is water proofed e.g glass, aluminium e.t.c <span />
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A man is walking while riding a train. He says he is moving at 2 mph. A woman standing on a platform at a train station says the
-BARSIC- [3]

The woman is correct because it is the pace he is moving not walking.

5 0
3 years ago
A small mailbag is released from a helicopter that is descending steadily at 2.00 m/s. After 5.00s what is the speed of the mail
grandymaker [24]
The acceleration of gravity (on Earth) is 9.8 m/s² downward.

This means that every falling object gains 9.8 m/s more downward speed
every second that it falls.

In 5 seconds of falling, it gains (5 x 9.8 m/s) = 49 m/s of downward speed.

If it was already descending at 2.0 m/s at the beginning of the 5 sec,
then at the end of the 5 sec it would be descending at

                                 (2 m/s  +  49 m/s)  =  51 m/s .
7 0
3 years ago
The air in a balloon is a type of _____.<br> a. matter<br> b. energy<br> c. volume
devlian [24]

the answer is A.

because it says THE AIR which means there is air in the balloon

8 0
3 years ago
A spring with spring constant of 33 N/m is stretched 0.15 m from its equilibrium position. How much work must be done to stretch
Hoochie [10]

Work done is 0.442J

<u>Explanation:</u>

Given:

Spring constant, k = 33 N/m

Distance, x₁ = 0.15m

Additional distance, x₂ = 0.072 m

Total distance = 0.15 + 0.072 m

                        = 0.222 m

Work done, W = ?

We can calculate work done by the formula

W = \frac{1}{2}kx_2^2 - \frac{1}{2}kx_1^2

On substituting the value we get:

W = \frac{1}{2}k [(x_2)^2  - (x_1)^2]\\ \\W = \frac{1}{2} X 33[(0.222)^2 - (0.15)^2]\\ \\W = \frac{1}{2}X 33 [ 0.0493 - 0.0225]\\ \\W = 0.442 J

Therefore, work done is 0.442J

7 0
3 years ago
What is gravity? Is gravity a force?
vodka [1.7K]

Answer:

Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull.

Explanation:

The more massive an object is, the stronger its gravitational pull is. Earth's gravity is what keeps you on the ground and what causes objects to fall.

4 0
3 years ago
Read 2 more answers
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