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irina1246 [14]
4 years ago
15

A teacher pushes on a file cabinet sitting on a

Physics
1 answer:
Mashcka [7]4 years ago
5 0
I think it would be friction because friction is the resistance when one surface or object is moving over another.
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In order to increase thermal energy, the temperature must ___________.
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In order to increase thermal energy, the temperature must <span>increase</span>
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Convert 79.5 mi/h to m/s. 1 mi = 1609 m. Answer in units of m/s.
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Having a given problem of 79.5 miles per hour to be converted to meters per second, we need to know the constant values of 1 mile = 1609 meter, 1 hour = 60 minutes and 1 minute = 60 seconda. To solve, (79.5 mi/1 h)x(1609 m/ 1 mi)x(1 hr/60min)x(1 min/60 sec). The final answer would be 35.53 m/s.
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Two objects, one having twice the mass of the other, are initially at rest. Two forces, one twice as big as the other, act on th
Elodia [21]

<em><u>Note: There is no image to take as a reference, so I'm assuming F2 directed to the right and F1 to the left, and F2=2F1</u></em>

Answer:

\displaystyle a=\frac{F}{3M}

<em>to the right</em>

Explanation:

<u>Net Force</u>

When several forces are applied to a particle or a system of particles, the net force is the sum of them all, considering each force as a vector. As for the second Newton's law, the total force equals the product of the mass by the acceleration of the system:

\vec F_n=m\cdot \vec a

If the net force is zero, then the system of particles keeps at rest or at a constant velocity.

The system of particles described in the question consists of two objects of masses m1=M and m2, where

m_2=2m_1=2M

Two forces F1=F and F2 act individually on each object in opposite directions and

F_2=2F_1=2F

We don't get to see any image to know where the forces are applied to, so we'll assume F2 to the right and F1 to the left.

The net force of the system of particles is

F_n=2F-F=F

The mass of the system is

m_t=m_1+m_2=3M

Thus, the acceleration of the center of mass of the system is

\displaystyle a=\frac{F}{3M}

Since F2 is greater than F1, the direction of the acceleration is to the right.

Note: If the forces were opposite than assumed, the acceleration would be to the left

6 0
3 years ago
The thickness of a book is 3.2cm, measured between the inside covers the highest level of page is 1096 what order of magnitude e
Naddik [55]

Answer:

Magnitude of Thickness has order of 2.919 × 10^{-5} m

Explanation:

Thickness of book is 3.2 cm.

Number of pages in the book is 1096.

Thickness of 1096 pages is 3.2 cm.

Thus, thickness of 1 page is \frac{3.2}{1096} cm

Thickness of 1 page of book is 0.002919 cm

Magnitude of Thickness has order of 2.919 × 10^{-5} m


4 0
3 years ago
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