What is true about high-level nuclear waste?a.most of it is recycled
b.it's commercially reprocessed
c.some is reprocessed for national defense
d.some of it is sold to the public

Answers

Answer 1

Answer:

the answer is b. it's commercially reprocessed

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What currents are responsible for powering the movement of tectonic plates ? A. Platonic B. Tectonic C. Convection D. Plutonium

Answers

the currents responsible for powering the movement of tectonic plates is convection currents which occur in the mantle. As the hotter, less dense liquid rises it displaces the cooler more dense liquid which moves the tectonic plates out of allignment

Convection currents are responsible for powering the movement of tectonic plates.

A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 19.0 kg, and the loaded sled with its rider has a mass of 210 kg. (a) Calculate the acceleration of the dogs starting from rest if each dog exerts an average force of 185 N backward on the snow. (b) Calculate the force in the coupling between the dogs and the sled.

Answers

The acceleration of the dogs as they pull the sled on the snow is $\boxed{4.09\,{{\text{m}}\mathord{\left/{\vphantom{{\text{m}}{{{\text{s}}^{\text{2}}}}}}\right.\kern-\nulldelimiterspace}{{{\text{s}}^{\text{2}}}}}}$ .

The force experienced by the sled due to the dogs is $\boxed{859\,{\text{N}}}$ .

Further Explanation:

As the dogs collectively full the sled on the wet snow surface, the sled will experience a net force due to all the dogs acting on it.

Part (a):

The net force applied by the 8 dogs on the sled is:

$\begin{aligned}{F_{{\text{net}}}}&=8*F\n&=8*185\n&=1480\,{\text{N}}\n\end{aligned}$

The net mass of the dog and the sled combined is:

$\begin{aligned}M&=\left({8*{m_d}}\right)+{m_s}\n&=\left({8*19}\right)+210\n&=362\,{\text{kg}}\n\end{aligned}$

The net acceleration of the dogs and the sled combined is:

$a=\frac{{{F_(net)}}}{M}$

Substitute the values of net force and mass in above expression.

$\begin{aligned}a&=\frac{{1480}}{{362}}\n&=4.088\,{{\text{m}}\mathord{\left/{\vphantom{{\text{m}}{{{\text{s}}^{\text{2}}}}}}\right.\kern-\nulldelimiterspace}{{{\text{s}}^{\text{2}}}}}\n&\approx4.09\,{{\text{m}}\mathord{\left/{\vphantom{{\text{m}}{{{\text{s}}^{\text{2}}}}}}\right.\kern-\nulldelimiterspace}{{{\text{s}}^{\text{2}}}}}\n\end{aligned}$

Thus, the acceleration of the dogs as they pull the sled on the snow is $\boxed{4.09\,{{\text{m}}\mathord{\left/{\vphantom {{\text{m}}{{{\text{s}}^{\text{2}}}}}}\right.\kern-\nulldelimiterspace}{{{\text{s}}^{\text{2}}}}}}$ .

Part (b):

Since the sled is moving with an acceleration of $4.09\,{{\text{m}}\mathord{\left/{\vphantom{{\text{m}}{{{\text{s}}^{\text{2}}}}}}\right.\kern-\nulldelimiterspace}{{{\text{s}}^{\text{2}}}}}$ , the net force experienced by the sled due to the pull of the dogs is:

${F_(sled)}={m_s}* a$

Substitute the values in above expression:

$\begin{aligned}{F_(sled)}&=210*4.09\n&=858.9\,{\text{N}}\n&\approx{\text{859}}\,{\text{N}}\n\end{aligned}$

Thus, the force experienced by the sled due to the dogs is $\boxed{859\,{\text{N}}}$ .

Learn More:

1. A 30.0-kg box is being pulled across a carpeted floor by a horizontal force of 230 N brainly.com/question/7031524

2. A horizontal rope is tied to a 50 kg box brainly.com/question/2416204

3. Why is it important to define a frame of reference brainly.com/question/526888

Answer Details:

Grade: High School

Subject: Physics

Chapter: Newton’s law of Motion

Keywords:

Team of eight dogs, waxed wood runners, loaded sled, with its rider, acceleration, average force 185 N, coupling between dog and sled, average masses of 19 kg each.

Common units of measurement for speed.

Answers

miles per hour (mph or miles/h), kilometers per hour (km/h), or meters per second (m/s).

Miles, kilometers, meters

What's exactly the 4 dimension (4D)?

Answers

Time is bounded up in the concept of Space. One without the other cannot be. Time is, in the Theory of Strings, the 4th dimension.

What principal of a lever is being used in this photograph? A.
A bottle opener is a type of lever that reduces the input force required by reducing the distance over which the force is applied.

B.
A bottle opener is a type of lever that enables the same work to be done over a shorter distance with less force.

C.
A bottle opener is a lever in which a smaller input force acts over a larger distance so that a larger output force can act over a smaller distance.

D.
A bottle opener is a type of lever that magnifies the output force required.

Answers

I believe that the answer is C

A straight horizontal line on a speed-time graph means the speedis constant. This means the speed is not changing over time.
How is this different from a distance-time graph?

Answers

Answer:

its devavtion is different from the distance changes process

Explanation:

Final answer:

A speed-time graph and a distance-time graph represent different aspects of motion. A horizontal line on the former indicates a constant speed (zero acceleration), while a straight, upward-diagonal line on the latter shows constant speed. A flat horizontal line on a distance-time graph shows no movement.

Explanation:

A speed-time graph and a distance-time graph each depict different aspects of motion. A horizontal line on a speed-time graph does indeed indicate constant speed or zero acceleration; the object is moving at a constant speed. However, a distance-time graph shows how the position of the object changes over time.

Let's take an example. If a car is traveling at a constant speed, on a speed-time graph, this would be represented by a horizontal line. The height of the line above the time axis represents the constant speed.

On a distance-time graph, a car moving at constant speed will be represented by a straight line with a positive slope. This is because the position of the car is continuously changing (it's covering distance), and at a constant rate. The slope of the distance-time graph gives us the speed of the car.

So, while a flat horizontal line in a speed-time graph indicates constant speed, a flat horizontal line in a distance-time graph would indicate no change in position, i.e., the object is not moving at all.