1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PilotLPTM [1.2K]
2 years ago
14

☆ Correct and rewrite the following statements:

Physics
1 answer:
il63 [147K]2 years ago
3 0

Answer:

<h3>a) </h3><h3><u>Question</u><u>:</u><u>-</u></h3>
  • Rubber is a good conductor of electricity.
<h3><u>A</u><u>n</u><u>s</u><u>w</u><u>e</u><u>r</u><u>:</u><u>-</u></h3>
  • <em>I</em><em>t</em><em>'</em><em>s</em><em> </em><em>i</em><em>n</em><em>c</em><em>o</em><em>r</em><em>r</em><em>e</em><em>c</em><em>t</em><em> </em><em>s</em><em>e</em><em>n</em><em>t</em><em>e</em><em>n</em><em>c</em><em>e</em><em>.</em>
  • As we know that, rubber are an insulators of electricity, and they do not not have free ions which can help in conducting electricity.

<u>S</u><u>o</u><u> </u><u>c</u><u>o</u><u>r</u><u>r</u><u>e</u><u>c</u><u>t</u><u> </u><u>s</u><u>e</u><u>n</u><u>t</u><u>e</u><u>n</u><u>c</u><u>e</u><u> </u><u>i</u><u>s</u><u>:</u>

  • <em>R</em><em>u</em><em>b</em><em>b</em><em>e</em><em>r</em><em> </em><em>i</em><em>s</em><em> </em><em>a</em><em> </em><em>b</em><em>a</em><em>d</em><em> </em><em>c</em><em>o</em><em>n</em><em>d</em><em>u</em><em>c</em><em>t</em><em>o</em><em>r</em><em> </em><em>o</em><em>f</em><em> </em><em>e</em><em>l</em><em>e</em><em>c</em><em>t</em><em>r</em><em>i</em><em>c</em><em>i</em><em>t</em><em>y</em><em>.</em>

<h3>b)</h3><h3><u>Q</u><u>u</u><u>e</u><u>s</u><u>t</u><u>i</u><u>o</u><u>n</u><u>:</u><u>-</u></h3>
  • Electroplating wastes are useful to human health and environment.
<h3><u>Answer</u><u>:</u><u>-</u></h3>
  • <em>It's</em><em> </em><em>incorrect</em><em> </em><em>sentence</em><em>.</em><em> </em>
  • 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.

<u>So correct sentence is:</u>

  • <em>Electroplating wastes are </em><em>harmful</em><em> </em><em>to human health and </em><em>environment</em><em>.</em>

<h3>c)</h3><h3><u>Question</u><u>:</u><u>-</u></h3>
  • In an LED bulb, the shorter lead is connected to the positive terminal of the battery.
<h3><u>Answer</u><u>:</u><u>-</u></h3>
  • <em>It's incorrect sentence. </em>
  • 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.

<u>So correct sentence is:</u>

  • <em>In an LED bulb, the </em><em>longer</em><em> lead </em><em>i</em><em>s</em><em> </em><em>connected to the positive terminal of the battery.</em>

<h3>d)</h3><h3><u>Question</u><u>:</u><u>-</u></h3>
  • Pure water conducts electricity.
<h3><u>Answer</u><u>:</u><u>-</u></h3>
  • <em>It's incorrect sentence. </em>
  • 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.

<u>So correct sentence is:</u>

  • <em>P</em><em>ure water </em><em>c</em><em>a</em><em>n</em><em>'</em><em>t</em><em> </em><em>conduct</em><em> </em><em>electricity.</em>
You might be interested in
A motor produces less mechanical energy than the energy it uses because the motor?
In-s [12.5K]
<span>A motor produces less mechanical energy than the energy it uses because the motor looses some energy to heat.</span>
3 0
2 years ago
A rectangular barge, 5.2 m long and 2.4 m wide, floats in fresh water. Suppose that a 410-kg crate of auto parts is loaded onto
sesenic [268]
<h2>Answer:</h2><h2>The depth of barge float=3 cm</h2><h2>Explanation:</h2>

Length of rectangular barge=5.2 m

Width of rectangular barge=2.4m

Mass of crate=410 kg

Let h be the height of barge float

Volume of barge float=l\times b\times h=5.2\times 2.4\times h=12.48h

Density of water=10^3kg/m^3

Weight of water displaced by barge=Buoyant force=-Weight of horse

Volume\;of\;water\times density\;of\;water\times g=410\times g

12.48h\times 1000=410

h=\frac{410}{12.48\times 1000}=0.03 m

1 m=100 cm

0.03 m=0.03\times 100=3cm

Hence, the depth of barge float=3 cm

<h2 />
4 0
3 years ago
Read 2 more answers
A hotel elevator ascends 200m with maximum speed of 5m/s. Its acceleration and deceleration both have a magnitude of 1.0m/s2. Pa
ValentinkaMS [17]

Answer:

45 s .

Explanation:

The accelerator will first accelerate , then move with uniform velocity and at last it will decelerate to rest .

displacement s = ?

acceleration a = 1 m /s²

Final speed v = 5 m/s

initial speed u = 0

v² = u² + 2as

5² = 0 + 2 x 1 x s

s = 12.5  m

B)  Let time of acceleration or deceleration be t

v = u + a t

5 = 0 + 1 t

t = 5 s

Similarly displacement during deceleration = 12.5 m

Total distance during uniform motion = 200 - ( 12.5 + 12.5 ) =  175 m .

velocity of uniform motion = 5 m /s

time during which there was uniform velocity = 175 / 5 = 35 s

Total time = 5 + 35 + 5 = 45 s .

4 0
2 years ago
When does sea breeze occur
Vladimir79 [104]
<span>Sea breeze can happen during hot summer days because of the uneven  heating rates of water and land. The land surface heats up faster than the surface of the water during the day.  At this rate, the air above the land grows warmer than the air atop the ocean. Warmer air is always lighter than cooler air. As a consequence, warm air is pushed upward causing it to rise. With this, warmer air rises over the land. As warm air rises over the land, cooler air over the ocean flows over the land surface to change or replace the rising warm air.</span>


3 0
3 years ago
Read 2 more answers
45:56
Romashka-Z-Leto [24]

Answer:

A car traveling south with its cruise control set

Explanation:

Turning could cause anything to slow down but going forward could mean that anything could go faster.

7 0
2 years ago
Other questions:
  • Fill in the blank
    8·2 answers
  • What is the momentum of a 73 person running with a speed of 2 m/s
    14·1 answer
  • Is this diagram important in exams?
    5·1 answer
  • The magnetic field due to the loop always opposes the external magnetic field.(b) The flux due to the loop always has the opposi
    15·1 answer
  • A delivery truck travels 2.8 km North, 1.0 km East, and 1.6 km South. The final displacement from the origin is ___km to the ___
    7·1 answer
  • Which of the following will not have the same number of valence electrons?
    5·1 answer
  • A ball that rolls on the ground is initially propelled with a speed of 45 km / h and after 10 seconds it stops. Assuming you los
    10·1 answer
  • What is pulling force? Give any two examples.,
    8·1 answer
  • Reclamation would be classified as a _____ human activity for the environment. Positive or negative?
    10·1 answer
  • What is fundamental quantity?​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!