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2 years ago

What are three characteristic properties of matter?

Physics

2 answers:

olya-2409 [2.1K]2 years ago

5 0

Density,solubility,and melting point.

Licemer1 [7]2 years ago

4 0

Physical characteristics of matter include its mass, weight, volume, and density. It also specifically describes its odor, shape, texture, and hardness. In addition, physical properties describe whether the object is a solid, a liquid, or a gas – its phase of matter at room temperature.

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A 53.0-kg skater is traveling due east at a speed of 2.90 m/s. A 72.0-kg skater is moving due south at a speed of 6.20 m/s. They

soldier1979 [14.2K]

Answer:

a. $\thta=71^{\circ}$

b. $v_f=3.78 m/s$

Explanation:

We are given that

$m_1=53 kg$

$v_1=2.9 m/s$

$m_2= 72 kg$

$v_2=6.2 m/s$

a.We have to find the angle

$\theta=tan^{-1}{\frac{m_2v_2}{m_1v_1}=\frac{72(6.2)}{53(2.9)}=71^{\circ}$

$\theta=71^{\circ}$

b. We have to find the speed $v_f$

According to law of conservation of momentum

$m_1v_1=(m_1+m_2)v_fcos\theta$

$53(2.9)=(53+72)v_fcos 71^{\circ}=40.7 v_f$

$v_f=\frac{153.7}{40.7}=3.78 m/s$

3 0

2 years ago

The velocity is zero but the speed is a nonzero quantity?

jenyasd209 [6]

The starting and ending points of the motion are the same.. . . . .

5 0

2 years ago

If an element an atomic number of 32 and a mass of 72, how many neutrons does it have?

weqwewe [10]

Answer:

Explanation:

and your welcome

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2 years ago

A charge if 2 nC is placed 10cm to the right of a conducting sphere with a diameter of 2 cm. A charge of 5 nC is placed 10 nC to

SCORPION-xisa [38]

Answer:

The charge at the center of the conducting sphere is zero.

Explanation:

A principle of conductor materials is that the electric field inside a conductor in electrostatic state is always zero. The gauss law says that the flux of a electric field in a closed surface is proportional to the charge enclosed by the surface. Then if the Electric field inside of a conductor is zero, imperatively the charge anywhere inside the conductor is zero too, so the charge at the center of the sphere is zero.

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3 years ago

In this image F1 is equal to 100 N and F2 is equal to 50 N. What is the net force?

ZanzabumX [31]

Answer:

net force would be 50 N right

Explanation:

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1 year ago