Ask question

Ask question

All categories

3 years ago

6

What happens when a negatively charged object A is brought near a neutral object B?

1 answer:

castortr0y [4]3 years ago

8 0

Answer: Option B

Explanation : When a negatively charged object A gets in contact with the neutral object B, the negative charge of object will induce the opposite charges on object B. Hence, there will be a positive charge on object B

You might be interested in

Why is powdered or ground up quartz used as an abrasive?

MrRa [10]

Explanation:

The high hardness of quartz, seven on the Mohs Scale, makes it harder than most other natural substances. As such it is an excellent abrasive material. Quartz sands and finely ground silica sand are used for sand blasting, scouring cleansers, grinding media, and grit for sanding and sawing

3 0

3 years ago

Read 2 more answers

After working on her car, a woman wants to clean the dirt and oil off her face, oil is a nonpolar substance and will not wash of

kobusy [5.1K]

What are the answer choices?

5 0

4 years ago

Read 2 more answers

In this problem you will consider the balance of thermal energy radiated and absorbed by a person.Assume that the person is wear

Alekssandra [29.7K]

Answer:

The thermal power emitted by the body is $P_t = 286.8 \ Wm^{-2}$

The net power radiated is $P_{net} = 460 \ W$

Explanation:

From the question we are told that

The length of the assumed hum $T_{room} = 20 ^oC$ an body is L = 2.0 m

The circumference of the assumed human body is $C = 0.8 \ m$

The Stefan-Boltzmann constant is $\sigma = 5.67 * 10^{-8 } \ W\cdot m^{-2} \cdot K^{-4}.$

The temperature of skin $T_{body} = 30^oC$

The temperature of the room is

The emissivity is e=0.6

The thermal power radiated by the body is mathematically represented as

$P_t = e * \sigma * T_{body}^4$

substituting value

$P_t = 0.6 * 5.67*10^{-8} * (303)^4$

$P_t = 286.8 \ Wm^{-2}$

The net power radiated by the body is mathematically evaluated as

$P_{net} = P_t * A$

Where A is the surface area of the body which is mathematically evaluated as

$A = C* L$

substituting values

$A = 0.8 * 2$

$A = 1.6 m^2$

=> $P_{net} = 286.8 * 1.6$

=> $P_{net} = 460 \ W$

8 0

3 years ago

What is the average distance, in millions of kilometers, from the Sun to the asteroid belt?

Alex_Xolod [135]

The correct answer is B. 503.

8 0

4 years ago

What are some of the major pieces of evidence for the theory of plate tectonics? How does the theory explain these observations?

marta [7]

Answer:

evidence:

- fossils found in different parts of the world were the same

- weather patterns in different parts of the world

- mountain ranged with the same rock types, structures, and ages are now on opposite sides of the atlantic ocean

- coal was found in cold climates where it could not have formed

-scratches from glaciers were found in a desert

- continents fit like a puzzle

- identical rocks of the same type and age found on both sides of the atlantic ocean

3 0

3 years ago