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2 years ago

HELPPPPPPP PLEASSEEEE

Physics

1 answer:

sergeinik [125]2 years ago

4 0

It’s C I KNOW CAUSE IVE JUST TOOKEN THE TESTT

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A 1400kg car moving westward with a velocity of 15m/s collides with a utility pole and is brought to rest in 0.30sec. find the f

sergejj [24]

Force=(mass*velocity)-(mass*velocity)/time

force=0-(-15*1400)/0.30

force=70000N

8 0

3 years ago

Read 2 more answers

Design a tension member and slip-critical splice to carry a factored load of 500 kips. Please use a wide-flange section for the

Svetlanka [38]

Answer:

Kindly check the explanation section.

Explanation:

For the design we are asked for in this question/problem there is the need for us to calculate or determine the strength in fracture and that of the yield. Also, we need to calculate for the block shear strength.

From the question, we have that the factored load = 500kips. Also, note that the tension splice must not slip.

Also, the shear force are resisted by friction, that is to say shear resistance = 1.13 × Tb × Ns.

Assuming our db = 3/4 inches, then the slip critical resistance to shear service load = 18ksi(refer to AISC manual for the table).

If db = 7/8 inches, then the shear force resistance for n bolt = 10.2kips, n > 49.6.

The yielding strength = 0.9 × Aj × Fhb= 736 kips > 500

The fracture strength = .75 × Ah × Fhb = 309 kips.

The bearing strength of 7/8 inches bolt at the edge hole and other holes = 46 kips and 102 kips.

4 0

4 years ago

A particle whose speed is 50 m/sec moves along the line from A(2,1) to B (9,25)

WINSTONCH [101]

First, calculate for the distance between the given points A and B by using the equation,

D = sqrt ((x2 – x1)2 + (y2 – y1)2)

Substitute the known values:

D = sqrt((9 – 2)2 + (25 – 1)2)

D = 25 m

I assume the unknown here is the time it would require for the particle to move from point A to B. This can be answered by dividing the calculated distance by the speed given above.

t = (25 m)/ (50 m/s) = 0.5 s

Thus, it will take 0.5s for the particle to complete the route.

3 0

3 years ago

3) What is the weight of an object with a mass of 5.2 kilograms?

inna [77]

Answer:

50.96 N

Explanation:

weight = mass x gravity

We know that gravity = 9.8 m/s^2 and mass = 5.2 kg.

w = m x g

w = 5.2 kg x 9.8 m/s^2

w = 50.96 N

The weight of the object is 50.96 N (newtons). Hope this helps, thank you !!

8 0

3 years ago

If the force causing a mass to accelerate is multiplied by a number while keeping the mass the same, what happens to the acceler

klasskru [66]

Answer: If mass remains constant and you double the force you will double the acceleration.

3 0

3 years ago