All categories

3 years ago

~choices below~

2 answers:

6 0

Answer : The correct option is, (A) Physical properties can be observed without changing the identity of the substance, while chemical properties can not.

Explanation :

Physical properties : It can be observed or measured without changing the chemical property of the substance.

In the physical property, no new compound or substance is formed only changes occur in the phase.

Chemical properties : It can be observed or measured by changing the chemical property of the substance.

In the chemical property, a new compound or substance is formed and no changes occurs in the phase.

Hence, the correct option is, (A)

mart [117]3 years ago

5 0

A is the correct answer

You might be interested in

In this closed system, a dog has sprinted to the top of a cliff. The dog (mass of 25kg) had been sprinting with a velocity of 13

umka21 [38]

According to this photo, or i can recommend this video that helped me by tapton physics.

6 0

3 years ago

True or false as heat and pressure decreases one type of metamorphic rock will transform into another type

dezoksy [38]

Answer: True

Explanation: Metamorphism is the changing of rocks by heat and pressure. During this process, rocks change either physically and/or chemically. They change so much that they become an entirely new rock. Figure 4.22: The platy layers in this large outcrop of metamorphic rock show the effects of pressure on rocks during metamorphism.

6 0

3 years ago

A girl travels along the circumference of a circle of radius 14 m. What is her total distance travelled and displacement when sh

AysviL [449]

Answer:

87.976meters, 43.988 meters, 65.982 meters

Explanation:

Given data

Radius= 14m

Let us find the circumference of the circle

This is equivalent to the total distance covered

C= 2πr

C= 2*3.142*14

C= 87.976 meters

Hence the total distance is

87.976meters

The displacement when she has covered 1/2 the circle is

=87.976/2

=43.988 meters

The displacement when she has covered 3/4 the circle is

=87.976* 3/4

=65.982 meters

6 0

3 years ago

The length of the grassy park where the aunt lives is 1 kilometer. How many times longer than the aunt is the park? Explain your

Oksi-84 [34.3K]

Answer:ssundee

Explanation:

6 0

4 years ago

Explain why the intensity of the light in a flashlight beam decreases as the flashlight moves farther away.

Karolina [17]

Ir=Initial Intensity/Area of spread=Io4πr2
Ir∝1r2

It is seen from this expression that intensity is inversely proportional to the square of the distance. As we move away from the light source the intensity decreases at the rate of square of the distance from the source.

Brightness being the perception of intensity. more the intensity more bright the object is perceived and vice versa.

7 0

3 years ago