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3 years ago

How does slope on this graph indicate the amount of density?

Physics

1 answer:

Lynna [10]3 years ago

5 0

Answer:

The steeper the slope, the higher the density

Explanation:

A graph of mass against volume of different substances helps us to know that the slope is density since density is given by mass per unit volume. Therefore, the steeper the slope, the higher the density and vice versa.

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☆ Correct and rewrite the following statements:

il63 [147K]

Answer:

<h3>a) </h3><h3>Question:-</h3>

Rubber is a good conductor of electricity.

<h3>Answer:-</h3>

It's incorrect sentence.
As we know that, rubber are an insulators of electricity, and they do not not have free ions which can help in conducting electricity.

So correct sentence is:

Rubber is a bad conductor of electricity.

<h3>b)</h3><h3>Question:-</h3>

Electroplating wastes are useful to human health and environment.

<h3>Answer:-</h3>

It's incorrect sentence. 
As we know that, electroplating of substances releases harmful and toxic substances into the environment causing serious health issues in human, so it's waste substances released into environment can have very harmful effects.

So correct sentence is:

Electroplating wastes are harmful to human health and environment.

<h3>c)</h3><h3>Question:-</h3>

In an LED bulb, the shorter lead is connected to the positive terminal of the battery.

<h3>Answer:-</h3>

It's incorrect sentence. 
As we know that, in an LED bulb their are two terminals that is the positive and the negative. So here the lead connected to the positive terminal is always slightly longer than the lead connected to negative terminal of the bulb.

So correct sentence is:

In an LED bulb, the longer lead is connected to the positive terminal of the battery.

<h3>d)</h3><h3>Question:-</h3>

Pure water conducts electricity.

<h3>Answer:-</h3>

It's incorrect sentence. 
As we know that, pure water is a form of H2O where Hydrogen (H) is positive ion and Oxygen (O) is a negative ion which can conduct electricity when they are in individuals but as in pure water they are in combined form of compound H2O in which they become neutral and can't conduct any electricity.

So correct sentence is:

Pure water can't conduct electricity.

3 0

2 years ago

What are ten different uses for solar energy?

Yuki888 [10]

Answer:

Top 10 Residential Uses for Solar Energy.

01. Solar Powered Ventilation Fans.

02. Solar Heating for Your Swimming Pool.

03. Solar Water Heater.

04. Solar House Heating.

05.Solar Powered Pumps.

06. Charging Batteries With Solar Power.

07. Power Your Home With Photo-Electric.

08. Solar Energy For Cooking.

09. Solar energy for outdoor lighting.

10. Solar transportation.

8 0

3 years ago

If a grocery cart with a mass of 16.5 kg accelerates at +2.31 m/s2 against a frictional force of -15.0 N, what is the applied fo

ziro4ka [17]

Call the applied force 'A'. (Clever ?)

The forces on the cart are 'A' forward and 15 N backward.

The net force on the art is (A-15) forward.

F = m a

Net forward force = (mass of the cart) x (its forward acceleration)

(A - 15) = (16.5) x (2.31)

A - 15 = 38.115

Add 15 to each side:

A = 53.115 newtons

5 0

3 years ago

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A claw hammer is used to pull a nail from a piece of wood. Where should you place your hand on the handle and where should the n

Alex Ar [27]

You will exert less force the more the lever is longer. So, you need to place your hands as high as possible with the hammers handle.

4 0

4 years ago

UPVOTES FOR EVERY ANSWER!!!!!!!!

mario62 [17]

C. Field lines begin near the magnet’s north pole and extend toward its south pole.

Hope this helps!

4 0

4 years ago

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