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lord [1]
3 years ago
9

Which statement is true about magnetic poles

Chemistry
2 answers:
Ahat [919]3 years ago
5 0
A. all magnets have two poles

ki77a [65]3 years ago
4 0

Answer:

a

Explanation:

I took the test

kddjdjd

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2. A 10 kg ball is rolled down a rail from a height of 20 m. What is the velocity at the bottom of the
solmaris [256]

Answer:

19.8m/s

Explanation:

Given parameters:

Mass of the ball  = 10kg

Height of the rail  = 20m

Unknown:

Velocity at the bottom of the rail  = ?

Solution:

The velocity at the bottom of the rail is its final velocity.

Using the appropriate motion equation, we can find this parameter;

   V²   = U²  + 2gH

V is the final velocity

U is the initial velocity

g is the acceleration due to gravity

H is the height

  the ball was rolled from rest, U  = 0

  V²  = O²  + 2 x 9.8 x 20

 V  = 19.8m/s

3 0
3 years ago
Which organ in frog function similar to the function of lungs in a bird ?​
34kurt

Answer:

Explanation:

FROGS BREATHE THROUGH SKIN IN WATER AND THROUGH LUNGS ON LAND.

I HOPE IT WILL HELP YOU.

Hope this will help you and please mark as brainlist answer

3 0
3 years ago
Lab Report
Mariulka [41]

Answer:

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Explanation:

you just got rickrolled.

3 0
3 years ago
GIVING BRAINLIEST!! PLEASE HELP
PIT_PIT [208]

Answer:

d

Explanation:

6 0
3 years ago
Read 2 more answers
What is the temperature (°C) of 1.75 g of O2 gas occupying 4.60 L at 1.00 atm?
julsineya [31]

Given- m= 1.75 g  

Now moles of O2 gas= Mass/ Molar mass  

n = 1.75/32  

V= 2L  

P= 1atm  

R=0.0821.....Constant  

As PV=nRT  

=> T=PV/nR  

= 1* 2/ (1.75/32)*0.0821 K  

= 2*32/1.75* 0.0821 K  

= 445.45 K  

= (445.45- 273.15) degrees celsius  

= 172.30 degrees celsius..... ANSWER

4 0
3 years ago
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