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Studentka2010 [4]

3 years ago

14

A _ spreads light into its own individual colors.

2 answers:

frozen [14]3 years ago

8 0

I don't know what you mean by this question but I'm going to say Prism.

bagirrra123 [75]3 years ago

5 0

A prism spreads light into its own individual colors.

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The atmospheric pressure is due to the

Rzqust [24]

Answer:

b

Explanation:

air mass surrounding the earth

7 0

4 years ago

What is this feature?

Viktor [21]

Answer: c Delta

Explanation:

A delta is a landform created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot carry away the supplied sediment.

Hope this helps!!

3 0

3 years ago

Johnson is dragging a bag on a ice surface. He pulls on the strap with a force of 112 N at an angle of 45° to the horizontal to

Nady [450]

Answer with Explanation:

We are given that

Force=F=112 N

$\theta=45^{\circ}$

Distance, $s=84 m$

Time, t=3.33 minutes

We have to find the work done by Johnson on the bag and the power generated by Johnson.

Work done, W= $Fscos\theta$

Using the formula

Work done, W= $112\times 84cos45=6652.46 J$

Power, P= $\frac{W}{t}=\frac{6652.46}{3.33\times 60}=33.3 watt$

Using 1 minute=60 s

Hence, the power generated by Johnson=33.3 watt

5 0

3 years ago

guapka [62]

Ina vacuum, it is a constant value that does not depend on the observer.

8 0

3 years ago

Read 2 more answers

Read the scenario and solve these two problems.

Burka [1]

Answers:

a) 5400000 J

b) 45.92 m

Explanation:

a) The kinetic energy $K$ of an object is given by:

$K=\frac{1}{2}mV^{2}$

Where:

$m=12000 kg$ is the mass of the train

$V=30 m/s$ is the speed of the train

Solving the equation:

$K=\frac{1}{2}(12000 kg)(30 m/s)^{2}$

$K=5400000 J$ This is the train's kinetic energy at its top speed

b) Now, according to the Conservation of Energy Law, the total initial energy is equal to the total final energy:

$E_{i}=E_{f}$

$K_{i}+P_{i}=K_{f}+P_{f}$

Where:

$K_{i}=5400000 J$ is the train's initial kinetic energy

$P_{i}=0 J$ is the train's initial potential energy

$K_{f}=0 J$ is the train's final kinetic energy

$P_{f}=mgh$ is the train's final potential energy, where $g=9.8 m/s^{2}$ is the acceleration due gravity and $h$ is the height.

Rewriting the equation with the given values:

$5400000 J=(12000 kg)(9.8 m/s^{2})h$

Finding $h$ :

$h=45.918 m \approx 45.92 m$

7 0

3 years ago

Read 2 more answers