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4 years ago

I’m not sure how to do this pls help

Physics

1 answer:

MrRa [10]4 years ago

6 0

Answer:

Area under the curve

Explanation:

We have to remember the definition of impulse, which is a force that acts on a particle for a short interval that is large enough to produce a definite change in the amount of motion is known as impulsive force and the resulting movement is called impulsive movement.

Therefore impulse is equal to the product of force by the time interval.

The graph shows the axis of force and the axis of time, therefore the area under the curve will define the value of the impulse for that body.

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A 1200 kg car is moving at 8 m/s when is strikes a barrier with an equivalent spring constant of 18,000 N/m. How far is the barr

kenny6666 [7]

1200 ➗8

<h2> that gives 150</h2>

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8 0

3 years ago

What makes some chemical bonds more stable than others

Juliette [100K]

it occurs when the energy of the combination has lower energy than the separated atoms

4 0

3 years ago

An object of height 2.2 cm is placed 5.1 cm in front of a diverging lens of focal length 19 cm and is observed through the lens

monitta

Answer:

a) i = -4.02 cm , b) h’= 1,576 cm

Explanation:

a) The constructor equation is

1 / f = 1 / i + 1 / o

Where f is the focal length, i and o are the distance to the image and the object

Let's clear the distance to the image

1 / i = 1 / f - 1 / o

1 / i = 1 / -19 - 1 / 5.1

1 / i = 0.2487

i = -4.02 cm

b) let's use the expression of magnification

m = h’/ h = - i / o

h’= - h i / o

h’= 2.2 4.02 /5.1

h’= 1,576 cm

3 0

3 years ago

Two long, straight wires are separated by 0.120 m. The wires carry currents of 11 A in opposite directions, as the drawing indic

rewona [7]

Answer:

The magnitude of the magnetic field is 1.83 x $10^{-5}$ T.

Explanation:

The flow of an electric current in a straight wire induces magnetic field around the wire. When current is flowing through two wires in the same direction, a force of attraction exists between the wires. But if the current flows in opposite directions, the force of repulsion is felt by the wires.

In the given question, the direction of flow of current through the wires is opposite, thus both wires applies the same field on each other. The result to repulsion between them.

The magnetic field (B) between the given wires can be determined by:

B = $\frac{U_{o}I }{2\pi r}$

where: I is the current, r is the distance between the wires and $U_{0}$ is the magnetic field constant.

But, I = 11 A, r = 0.12 m and $U_{0}$ = 4 $\pi$ x $10^{-7}$ Tm/A

So that;

B = $\frac{4\pi *10^{-7}*11 }{2\pi *0.12}$

= 1.8333 x $10^{-5}$

B = 1.83 x $10^{-5}$ T

6 0

3 years ago

A train car has a mass of 10,000 kg and is moving at +3.0 m/s. It strikes an identical train car that is at rest. The train cars

shtirl [24]

In order to compute the final velocity of the trains, we may apply the principle of conservation of momentum which is:
initial momentum = final momentum
m₁v₁ = m₂v₂

The final mass of the trains will be:
10,000 + 10,000 = 20,000 kg
Substituting the values into the equation:

10,000 * 3 = 20,000 * v
v = 1.5 m/s

The final velocity of the trains will be 1.5 m/s

3 0

3 years ago