Why do solids have a definite shape?

2 answers:

5 0

Any matter that is a solid has a definite shape and a definite volume. The molecules in a solid are in fixed positions and are close together. Although the molecules can still vibrate, they cannot move from one part of the solid to another part. As a result, a solid does not easily change its shape or its volume

Rashid [163]2 years ago

4 0

"any matter that is a solid has a definite shape and a definite volume. the molecules in a solid are in fixed positions and are close together, although the molecules can still vibrate they cannot move from one part of the solid to another part. as a result, a solid does not easily change its shape or its volume."

I hope this helps ^-^

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Rina8888 [55]

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A shopper pushes a grocery cart for a distance of 18m at a constant speed on level ground, against a 37.5N frictional force. he

goldfiish [28.3K]

d = distance to which the grocery cart is pushed = 18 m

f = frictional force = 37.5 N

θ = angle of force below the horizontal = 27.5 deg

W = gravitational force in downward direction

Θ = angle between gravitational force in down direction and displacement in horizontal direction = 90

U = work done on the cart by gravitational force

work done on the cart by gravitational force is given as

U = W d CosΘ

inserting the values

U = W (18) Cos90

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2 years ago

7.) A neutral atom loses two electrons. Which of the following ions might result? HELP ME ASAP!!!

Setler79 [48]

Answer:

A. Mg+2

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6 0

2 years ago

025 10.0 points

mamaluj [8]

Answer:

$m_b=278.73\ kg$

Explanation:

Center of Gravity

It refers to a point where all the forces of gravity of a body make a zero total torque. To find the solution we use the fact that the net force acting on the system boat-man is in every moment equal to zero. It's assured by the first Newton’s law, the center of gravity is at rest or in uniform motion in both moments. From an external viewer's point of view, the center of gravity remains unchanged. The formula to compute it is shown below

$\displaystyle x_c=\frac{\sum x_im_i}{\sum m_i}$

Originally, the man sits on the stern of the boat. His weight is applied at a distance xm=4.9 m from the pier (assumed as x=0). The boat is assumed to have a uniformly distributed mass applied at its center, i.e. at xb = 4.9 / 2 = 2.45 m. The center of gravity is located originally at

$\displaystyle x_c=\frac{(4.9)(90.4)+(2.45)(m_b)}{90.4+m_b}$