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musickatia [10]
3 years ago
13

Need help with these science questions!!!

Physics
2 answers:
liberstina [14]3 years ago
4 0
A is the first one (1) c, is the next and also c is the last i think not 100% but i think
denis-greek [22]3 years ago
3 0

Answer:1.it changes its physical state 2.lemonade 3.A mixture of 3 or more substances

Explanation:

Lemonade is a mixture.A solution is  mixture of two or more substances.if changes from a solid into a different form of state

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HEY YALL ANSA DIS PLS !!!
Rudik [331]

Answer:

A. 8.19 × 10^-11

Explanation:

7 0
3 years ago
A concave lens has a focal length of 25cm. it's power in diaptor is​
IgorLugansk [536]

As we know that :

\begin{gathered}\large{\boxed{\sf{P \: = \: \dfrac{1}{f}}}} \\ \\ \rightarrow {\sf{P \: = \: \dfrac{1}{-25}}}\end{gathered}

Power, is in Meter. So divide focal length by 100

\begin{gathered}\rightarrow {\sf{P \: = \: \dfrac{1}{\dfrac{-25}{100}}}} \\ \\ \rightarrow {\sf{P \: = \: \dfrac{-100}{25}}} \\ \\ \rightarrow {\sf{P \: = \:- 4}} \\ \\ \underline{\sf{\therefore \: Power \: of \: Concave \: lens \: is \: - \: 4D}}\end{gathered}

8 0
2 years ago
A skydiver jumps from a helicopter hovering at high altitude.if there were no air resistance, how fast would she be falling 12s
kiruha [24]

Well, if there were no air resistance, then a helicopter couldn't fly.  But let's do the physics and the Math anyway:

The way gravity works, the speed of a falling object increases at the rate of 9.8 m/s every second.

So, after falling for 12 seconds, its speed is (12 x 9.8) = <em>117.6 m/s </em>.

3 0
4 years ago
PLEASE HELP WILL GIVE BRAINLIEST!!!!!!!!
Kipish [7]

use a = (v1-v2)/t  so u would put 14 (initial velocity or v 1) - 6 (the v2) and divide all of that by 4 seconds to get 2m/s/s as your acceleration

6 0
4 years ago
Read 2 more answers
The speed of sound in ____ is greater than the speed of sound in water. Question 22 options: air steel cork water vaporThe speed
liberstina [14]

Answer:

The speed of sound in <u> Steel </u>is greater than the speed of sound in water.

5 0
4 years ago
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