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3 years ago

How is force related to physics ?

Physics

2 answers:

NISA [10]3 years ago

6 0

I have no idea to be honest

il63 [147K]3 years ago

3 0

Answer:

In physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity (e.g. moving from a state of rest), i.e., to accelerate. ... A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newton (N).

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An air-track glider attached to a spring oscillates between the 13.0 cm mark and the 63.0 cm mark on the track. The glider compl

LuckyWell [14K]

Answer:

(A) = 2.13 s

(B) = 0.47 Hz

(C) = 0.25 m

(D) = 0.74 m/s

Explanation:

number of oscillations (n) = 15

time (t) = 32 secs

start point (L1) = 13 cm = 0.13 m

End point (L2) = 63 cm = 0.63 m

(A) period = time / number of oscillation

= 32 / 15 = 2.13 s

(B) frequency = 1 / period

= 1 / 2.13 = 0.47 Hz

= 0.5 ( 0.63 - 0.13 )

= 0.25 m

(D) max speed = (2π / T) x A

= (2π / 2.13) x 0.25

= 0.74 m/s

6 0

3 years ago

Water at -5°c in a solid explain

Zolol [24]

The freezing point of water is 0 degree Celsius.
So as soon as the water’s temperature becomes 0 or anything lesser than that ,
It will become ice, which is the solid form of ice

5 0

4 years ago

Your physics TA has a far point of 0.759 m from her eyes and is able to see distant objects in focus when wearing glasses with a

romanna [79]

Answer:

$d=0.019m$

Explanation:

From the question we are told that:

Far point $x=0.759m$

Refractive power $P=-1.35 D.$

Generally, the equation for Focal length is mathematically given by

$F=\frac{1}{P}$

$F=\frac{1}{-1.35}$

$F=-0.74m$

Therefore

$\frac{1}{f}=\frac{1}{u}+\frac{1}{v}$

Where

$u=o$

$\frac{1}{-0.74}=\frac{1}{0}+\frac{1}{v}$

$v=-0.74m$

Therefore,The between her glasses and eyes

$d=x-v$

$d=0.759-0.74m$

$d=0.019m$

4 0

3 years ago

I need the answers ASAP.

dsp73

Answer:

Explanation:

A) Large: As she opens her parachute, she begins to displace a large volume of air. This leads to a Large air resistance

B) increase, weight: As she falls, the air resistance force increases. Now there is a force acting in opposite directions to her weight.

C)Weight, Decelerate: The skydiver has only the downward force of her weight pulling down on her, so she starts to decelerate

D) Weight, Upward, Resultant:

Her weight is now equal to the upward force from the ground. Her resultant force is then zero

E) Increases, same, constant, resultant, terminal:

As she accelerates faster, the air resistance force increases. It is now the same as her weight. She now moves at a constant speed because the resultant force acting on her is zero. She is now at her terminal velocity.

F) Increases, same, constant, terminal:

As she decelerates, the air resistance force on her parachute increases until it is the same as her weight. She is now moving with a constant speed until she hits the ground - a new slower terminal velocity

4 0

3 years ago

Victor has 100 trading cards, each with a distinct power level between 101 and 200 inclusive. Whenever he heads out, he always r

Alenkinab [10]

Answer:

Victor will always be able to select 4 of those cards with the following property

Explanation:

Number of trading cards = 100

victor selects 21 cards

let the 4 cards be labelled : A,B,C and D

The average power level of : A,B,C,D = ( A + B + C + D )/ 4 = P

let the two pairs be : ( A + B ) and ( C + D )

note: average power of each pair = P and this shows that

( A + B ) = ( C + D ) for Victor to select 4 cards out of the 21 cards that exhibit the same property

we have to check out the possible choices of two cards out of 21 cards yield distinct sums.

= C(21,2)=(21x20)/2 = 210.

from the question the number of distinct sums that can be created using 101 through 200 is < 210 .

hence it is impossible to get 210 distinct sums therefore Victor will always be able to select 4 of those cards

4 0

4 years ago