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Alchen [17]
3 years ago
15

John’s car travels a distance from A to B at a speed of 50 km/h for two hours as from B to C at a speed of 40 km/h for two hours

. What is the average velocity in m/s?
Physics
1 answer:
Blababa [14]3 years ago
7 0

Please find attached photograph for your answer. Hope it helps. Please do comment.

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The angle of incidence of a ray of light striking an equilateral triangular prisms ABC of refracting angle 60o is 40o. Calculate
valkas [14]

Answer:

1: the refracted angle in the first face is equal to the incident angle that is 60degrees

2. Emergence Angle is 42degrees

Explanation:

Pls see attached file

5 0
3 years ago
What physical property of nylon and leather make them get materials to use for shoelaces
Ulleksa [173]

What physical properties of nylon and leather make them good materials to use for shoelaces? A. high density and low conductivity B. durability and flexibility C. hardness and durability D. low viscosity and flexibility.

4 0
3 years ago
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A cricketer moves his hands backwards when holding a catch
lisov135 [29]
By doing this he increases the time due to which the rate of change momnetemdecreases. that means the ball comes to rest gently and does not hurt the fielder. but, if does not move his hand backwards, then the ball would come to rest in a fraction of second with a high rate of change of momentum. the ball will exert a lot of force on the hands of the fielder which will hurt him.
3 0
3 years ago
Suppose you have a glider and a hanging mass that you wish to know the masses of but you do not have a triple-beam balance avail
AlladinOne [14]

Answer:

the choice of a glider to hanging mass is a ratio of 20.2

Explanation:

The Newton´s second law for glider is:

Fnet=Ma

T=Ma

The Newton´s second law for hanging mass is:

Fnet=ma

mag-T=ma

Replacing:

mag-Ma=ma (eq. 1)

Clearing a:

a=(mg)/(m+M)

The expression for motion is:

y=vot+\frac{1}{2}at^{2}

H=0+\frac{1}{2}at^{2}

Clearing a:

a=\frac{2H}{t^{2} }

Replacing values:

a=\frac{2*0.75}{1.8^{2} } =0.46

From eq. 1:

M/m=20.2

5 0
3 years ago
The force exerted on an object when it is in contact with another object as it moves or tries to move is?
Paraphin [41]
I think that friction is the force exerted on an object when it is in contact with another object as it moves or tries to move.
6 0
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