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inessss [21]
3 years ago
11

What force needs to touch something to affect it please help xx

Physics
1 answer:
Montano1993 [528]3 years ago
7 0
On <span>Contact Forces: </span>
<span>Frictional Force </span>
<span>Tension Force </span>
<span>Normal Force </span>
<span>Air Resistance Force </span>
<span>Applied Force </span>
<span>Spring Force </span>

<span>Action-at-a-Distance Forces: </span>
<span>Gravitational Force </span>
<span>Electrical Force </span>
<span>Magnetic Force</span>
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Explain three differences between a science and a pseudoscience.
grin007 [14]
1) science does not accept personal story's as evidence, pseudoscience relies on these story's as evidence.
2) science argues from scientific knowledge, pseudoscience argues from ignorance 
3) science progresses, pseudoscience  does not progress
and 4) (just in case) science holds pier review, pseudoscience does not
8 0
4 years ago
To become positively charged, an atom must:
blagie [28]

Answer:

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Explanation:

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3 years ago
A syringe containing 1.55 ml of oxygen gas is cooled from 95.3 °c to 0.0 °c. what is the final volume of oxygen gas?\
irinina [24]
Consider the gas to be an ideal gas (it will obey all the introductory gas laws). Also you have to note that the gas will not change phase. It won't.

T_s (Temperature Start) = 95.3o C = 95.3 + 273 = 368.3 oK (degrees Kelvin)
T_e (Temperature End) = 0o C + 273 = 273 oK

Initial volume = Vi = 1.55 mL (no need to change to Liters. The answer will be in mL

 Vi /Ts =  Ve / Vs Ve is the unknown volume that you seek.
1.55 / 368.3  =  Ve / 273
Ve = 1.55 * 273 / 368.3
Ve = 1.1489 mL

If your teacher is concerned about Sig digs, then 0.0 has only two.
Your answer should be 1.1 mL, but I'll give you the choice.



3 0
4 years ago
a 65 kg skater at rest on a frictionless rink throws a 2 kg ball, giving the ball a velocity of 7 m/s. What is the velocity of t
gayaneshka [121]
The answer to your question is 33
8 0
3 years ago
A uniform plank of weight 100 N is 2000 mm long and rests on a support that is 400 mm from end E. At what distance from E must a
yan [13]

Answer:

the location of 160 N from end E is 25mm

Explanation:

given:

A uniform plank of weight 100 N is 2000 mm long

and rests on a support that is 400 mm from end E

find:

At what distance from E must a 160 N weight be placed in order to balance the plank?

                                                                      160 N

                                                                           |---x--->|

                                      100N                           \|/

======================||======================E

                                                            Δ---- 400mm---->|

|<----------------------------  2000mm   --------------------------->|

to determine the location of 160N load in order to balance the plank,

you have to take moment at support Δ.

note:

the 100 N is located at the center of a plank.

the distance of 100N from support = (2000 / 2) - 400 = 600mm

∑moment at Δ = 0

0 = -100 N (600mm) + 160 N (400-x)

0 = -60000 N.mm + 64000 N.mm - 160x N.mm

0 = 4000 - 160x

160x = 4000

x = 4000/160

x = 25 mm

therefore,

the location of 160 N from end E is 25mm

3 0
3 years ago
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