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4 years ago

Matter with a density that is less than water will____ when placed in a container of water?

Physics

1 answer:

lorasvet [3.4K]4 years ago

7 0

Answer:

float

Explanation:

a less dense material will float when placed in a material that is more dense than itself. The reverse is also true, that a denser material will sink when placed into into a less dense material.

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What is the difference in the speed of the generator with a small magnet and a generator with a large magnet?

Delvig [45]

With a small magnet with a generator it will be taken up quickly because how small it is while with a big generator it would take more force for it for the generator to attach because the larger the magnet that heavier it will be because it is attached to the North Pole magnet

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3 years ago

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There are many different companies that produce cell phones. All of the phones are slightly different, but they all achieve the

Lorico [155]

The fact that all phones are slightly different but achieve same primary goal tells us about technology that there can be many different design solutions to address a single problem (option D).

<h3>What is technology?</h3>

Technology is the organization and application of knowledge for practical purposes.

According to this question, many different companies have produced cell phones through technological applications. Although all of the phones are slightly different, they all achieve the same primary goal.

This shows us an intriguing aspect of technology that there can be many different design solutions to address a single problem.

Learn more about technology at: brainly.com/question/9171028

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2 years ago

12*3a car is stopped at a traffic light. it then travels along a straight road so that its distance from the light is given by w

Digiron [165]

Missing parts in the text of the exercise:
- The distance from the traffic light is given by $x(t) = bt^2 -ct^3$ , where $b=2.4 m/s^2$ and $c=0.13 m/s^3$

Solution:

part a) calculate the average velocity of the car for the time interval t=0 to t=8.0 s
- The average velocity is given by the ratio between the distance covered in the time interval:
 $v_{ave} = \frac{x(8.0 s)-x(0 s)}{8.0 s-0 s}$
x(0 s), the distance covered after t=0 s, is zero, while the distance after t=8.0 s is
$x(8.0 s)=b(8 s)^2-c(8 s)^3 = (2.4 m/s^2)(8 s)^2 -(0.13 m/s^3)(8 s)^3=$
$=87.04 m$
Therefore, the average velocity is
$v_{ave}= \frac{x(8.0 s)-x(0)}{8.0s-0}= \frac{87.04 m}{8.0s}= 10.88 m/s$

part b) calculate the instantaneous velocity of the car at t=0, t=4.0 s and t=8.0 s
- The instantaneous velocity can be found by performing the derivation of x(t):
 $v(t) = \frac{dx(t)}{dt}=2bt-3ct^2$
So now we just have to substitute t=0, t=4 s and t=8 s:
- t=0: v(0)=0
- t=4 s: $v(4.0 s)=2(2.4 m/s^2)(4.0 s)-3(0.13 m/s^2)(4.0s)^2=12.96 m/s$
- t=8 s: $v(8.0 s)=2(2.4 m/s^2)(8.0 s)-3(0.13 m/s^2)(8.0s)^2=13.44 m/s$

part c) how long after starting from rest is the car again at rest?
- To solve this part we must find the value of t for which v(t)=0, so:
 $2bt-3ct^2=0$
$t(2b-3ct)=0$
The first solution is t=0 s, which corresponds to the beginning of the motion, so we are not interested in this value. The second solution is
 $t= \frac{2b}{3c}= \frac{2\cdot 2.4 m/s^2}{3 \cdot 0.13 m/s^3}=12.31 s$
and this is the time at which the car is at rest again.

8 0

3 years ago

Which type of graph is best for analyzing quantitative dependent and independent variables?

34kurt

Answer:

line graph

Explanation:

on edge

8 0

3 years ago

Barometers have long been used to predict the weather. Jay and Jeff were responsible for recording the class weather data each d

AfilCa [17]

Answer:

Explanation:

You would have rain. You would have clouds, precipitation, and strong winds.

4 0

3 years ago

Read 2 more answers