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3 years ago

Absolute Zero is when energy / molecules stop moving.

Physics

1 answer:

denis-greek [22]3 years ago

3 0

Answer:

yes

Explanation:

When all of the molecules (or atoms) in a system stop moving completely, that's as cold as they can get

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6. Find the MAGNITUDE and ANGLE (counter-clockwise, from q=00, on the x-axis) of the vector C = A + B.

Katyanochek1 [597]

Answer:

Magnitude of C= $\sqrt{(Ax+Bx)^2+(Ay+By)^2)$

Angle=arctan(Ay+By/Ax+Bx)

Explanation:

Let

A = Axi + Ayj

B = Bxi + Byj

where i and j are unit vectors in the direction of x and y axes respectively.

C=A+B

C = (Ax + Bx)i + (Ay + By)j

The magnitude of vector C can be calculated by adding the square of magnitude of its componets and then taking sqaure root.

Magnitude of C= $\sqrt{(Ax+Bx)^2+(Ay+By)^2)$

And the angle will be

Angle=arctan(Ay+By/Ax+Bx)

5 0

3 years ago

A 3.00 m-long 6.00-kg ladder pivoted at the top hangs down from a platform at the circus. A 42.0-kg trapeze artist climbs to a p

statuscvo [17]

Answer:

The period of the system of ladder and woman, T = 2.5 seconds

Explanation:

Mass of the ladder, $m_1 = 6 kg$

Mass of the artiste, $m_2 = 42.0 kg$

Length of the ladder, L = 42.0 kg

The total moment of inertia can be calculated using the equation:

$I = \frac{1}{3} M_1 L^2 + m_2 (\frac{L}{2} )^2\\I = \frac{1}{3} *6*3^2 + 42* (\frac{3}{2} )^2\\I = 18 + 94.5\\I = 112.5 kg m^2$

D = L/2 = 3/2

D = 1.5 m

The frequency of the system of ladder and woman follows that of a physical pendulum which can be given by the equation:

$f = \frac{1}{2\pi } \sqrt{\frac{mgD}{I} } \\f = \frac{1}{2\pi } \sqrt{\frac{48*9.8*1.5}{112.5} }\\f = 0.4$

The period of the system of ladder and woman is given by:

T = 1/f

T = 1/0.4

T = 2.5 seconds

5 0

3 years ago

if a bowling ball hits a wall a force of 6 N, the wall exerts a force of how much back. on the bowling ball

grigory [225]

It would exert the same back right?

3 0

3 years ago

What is the resultant of the vectors shown?

ad-work [718]

Answer:

Option B

Explanation:

Option A is the wrong answer because the horizontal vector is in the opposite direction.

Option C is the wrong answer as the horizontal vector is in the opposite direction and all the vectors are connected head to tail [of the arrows] [Triangle law of vector addition]

Option D is the wrong answer as the horizontal vector is in the opposite direction.

5 0

2 years ago

A golf club experts an average force of 475 N for 0.006 seconds when it collides with a golf ball on a tee. What is the impulse

Ainat [17]

Answer: 2.85 N.s

Explanation: Impulse is the product of force and time or expressed in the following formula:

J = F x t

= 475 N x 0.006 s

= 2.85 N.s

8 0

3 years ago