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3 years ago

7

Can reverse magnetic compulsion be turned in to a form of non-lethal weaponry?

1 answer:

murzikaleks [220]3 years ago

8 0

yes because the magnet would repulse the bullet or whatever weapon they have thus prevention harm

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5. A star begins a s a ball of gas and dust pulled together by

erastova [34]

Answer:

d. Gravity

Explanation:

In the beginning of their lives, stars are formed when clouds of dust and gas are pulled together by gravity.

Hope this helps!!

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4 0

3 years ago

What is a methane. please answer pysicsssssssssss

3241004551 [841]

Answer:

Methane is a colorless, odorless flammable gas which is the main constituent of natural gas. It is the simplest member of the alkane series of hydrocarbons.

Explanation:

6 0

4 years ago

Read 2 more answers

The figure above represents a stick of uniform density that is attached to a pivot at the right end and has equally spaced marks

zavuch27 [327]

Answer:

After 2.0s the angular momentum is $L= 2(4A+3B+2C+D)x$

Explanation:

Let us call forces acting on the rod, A, B, C, and D, and the separation between them $x$ .

Then, the torque due to force A is

$\tau_a = 4Ax$ ,

due to the force B

$\tau_b = 3Bx$ ,

due to force C

$\tau_c = 2Cx$ ,

and the torque due to force D is

$\tau_d = Dx$ .

Therefore, the total torque on the the stick is

$\tau_{tot} =\tau_a+\tau_b+\tau_c+\tau_d$

$\tau_{tot} =4Ax+3Bx+2Cx+Dx$

$\tau_{tot} =x(4A+3B+2C+D)$

Now, this torque causes angular acceleration $\alpha$ according to the equation

$I \alpha = \tau_{tot}$

where $I$ is moment of inertia of the stick and it has the value

$I = \dfrac{1}{3} m(4x)^2$

Therefore the angular acceleration is

$\alpha = \dfrac{\tau_{tot} }{I}$

$\alpha =\dfrac{x(4A+3B+2C+D)}{\dfrac{1}{3}m(4x)^2 }$

$\boxed{\alpha =\dfrac{3(4A+3B+2C+D)}{16mx } .}$

Now, the angular momentum $L$ of the stick is

$L = I\omega$ ,

where $\omega$ is the angular velocity.

Since $\omega = \alpha t$ , we have

$L = \dfrac{1}{3}m (4x)^2 *\dfrac{3(4A+3B+2C+D)}{16mx }* t$

$L= (4A+3B+2C+D)x t$

Therefore, $t = 2.0s$ , the angular momentum is

$\boxed{ L= 2(4A+3B+2C+D)x. }$

5 0

3 years ago

Laura sees a horse pulling a buggy. She wonders how it can accelerate if the action of the horse pulling the cart would cause an

cricket20 [7]

Answer:

The net forces exerted on the horse and cart are not the same, so they are not balanced forces.

Explanation:

Using newton laws,

ΣF = ma

The two forces acting on the body is the forward force by the horse and the frictional force opposing the forward force

F-Fr= ma

Therefore,

F=ma+Fr

So the forward (by horse) is more than the opposite reaction (by cart).

The only time the forward force and the opposite reaction are the same is when a=0, I.e, the body is not moving at all or the body is moving at constant velocity.

3 0

3 years ago

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Which of the following is a compound?<br><br> A)oxygen<br> B)water<br> C)nitrogen<br> D)air

kozerog [31]

The Answer is A. oxygen

6 0

3 years ago

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