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anyanavicka [17]
3 years ago
11

Explain how a thumbtack is designed so that you do not have to use a lot of force to push it through paper or the surface of a b

ulletin board?
Physics
1 answer:
Brums [2.3K]3 years ago
8 0
Thumbtacks have a flat top which gives you a bigger area to push on, and the end is tapered and sharp to make it easier to push it into a wall, etc.
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Write a 150-word paragraph or two that describes at least three everyday things that exist or occur because of science.
Zarrin [17]
You were able to access the internet to post this question because of science. Medicine or vitamin supplements you take are a result of science. You use soap to wash your hands because of our understanding of how germs work, which is science. Practically anything you can think of has come about through the achievements of science. <span>Image formation (due to phenomenon of reflection). </span><span>Mirage (Its a everyday thing in deserts due to refraction) </span>

Dispersion of light (Color recognition by our eyes due to dispersion). Three actual everyday occurence that are created through science are Nuclear power. Antibiotc Drugs- t<span>o give some merit to the above three, laser light</span>
6 0
3 years ago
How are watts measured?
BARSIC [14]

Answer:

The watt (symbol: W) is a unit of power. In the International System of Units (SI) it is defined as a derived unit of 1 joule per second, and is used to quantify the rate of energy transfer

Explanation:

8 0
3 years ago
Read 2 more answers
a car moving with a speed of 10 metre per second is accelerator at the rate of 2 metre per second square find its velocity after
STatiana [176]

a = ( v(2) - v(1) ) ÷ ( t(2) - t(1) )

2 = ( v(2) - 10 ) ÷ ( 6 - 0 )

2 × 6 = v(2) - 10

v(2) = 12 + 10

v(2) = 22 m/s

7 0
3 years ago
What additional information is obtained from measurements on an ordinal scale compared to measurements on a nominal scale? Compa
Arada [10]
No idea, if you go on this website called Brainly they have all of the answers for you.
6 0
3 years ago
A student throws a water balloon with speed v0 from a height h = 1.82 m at an angle θ = 29° above the horizontal toward a target
3241004551 [841]

Answer:

v_o = 7.76 m/s

Explanation:

As we projected the balloon at speed vo at an angle of 29 degree

so the two component of velocity is given as

v_x = v_ocos29 = 0.875 v_o

v_y = v_o sin29 = 0.485 v_o

now we know that in x direction we have

d = v_x t

7.5 = 0.875 v_o t

v_o t = 8.57

in y direction we have

- 1.82 = (0.485 v_o) t - \frac{1}{2}gt^2

-1.82 = 0.485(8.57) - 4.9 t^2

t = 1.1 s

now we have

v_o = 7.76 m/s

7 0
4 years ago
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