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Tamiku [17]
3 years ago
12

What is calcium use bullets please

Physics
1 answer:
madam [21]3 years ago
7 0
The chemical element of atomic number 20. A soft grey metal. hope this helps.
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A construction worker moved a crate full of equipment 15,0 m using a constant force
Mkey [24]

Considering the definition of work and power, 157.5 W of power was developed.  

<h3>Power</h3>

Power is defined as how fast work is done. That is, power is the amount of work done per unit of time:

Power=\frac{work}{time}

P is the power developed by the force that performs the work and its unit of measurement in the International System is Watts (W).

The unit of measurement of work in the International System is the Joule (J). The time during which the work is developed has the unit of measurement in the International System of seconds (s).

<h3>Work </h3>

On the other side, work is defined as the force that is applied on a body to move it from one point to another.  

When a net force is applied to the body or a system and this produces displacement, then that force is said to perform mechanical work. This work can be positive if the system gains energy or negative if the system loses energy.

The work is equal to the product of the force by the distance and by the cosine of the angle that exists between the direction of the force and the direction that travels the point or the object that moves.

<h3>This case </h3>

In this case, the angle between the force and the displacement is 0 degrees. This is because the force and the displacement are in the same direction and sense, in the horizontal direction. So the cosine of 0 degrees will have a value of 1. Then work is equal to:

Work= force× distance

Being the force 105 N and the distance 15 meters, the work can be calculated as:

Work= 105 N× 15 meters

Solving:

<u><em>Work=  1,575 J</em></u>

Finally, being the time 10 seconds, the power can be calculated as:

Power=\frac{1,575 J}{10 s}

Solving:

Power= 157.5 W

In summary, 157.5 W of power was developed.  

Learn more about power and work:

<u>brainly.com/question/6763771</u>

<u>brainly.com/question/866077?referrer=searchResults</u>

brainly.com/question/14435134?referrer=searchResults

7 0
2 years ago
Which of the following types of graphs is best for plotting the percentages of a whole value in a data set? (2 points)
Levart [38]

Answer:

The best type of graph would be b. circle graph.

Explanation:

6 0
3 years ago
What is 3600Hz has in rpm?​
Setler [38]

Answer:

Explanation:

N=Rotor Speed in Revolution per minute(rpm)

for P=4 and N=3600, f comes out to be 120 Hz.

So frequency of voltage produced is 120 Hz. But this is not practical. Generally 4-Pole generator has N=1500rpm(for 50 Hz) or 1800rpm for 60 Hz. Two pole generator can have N=3600rpm(f=60Hz).

The most practical situation is generator having N=3600Hz with 2 Poles.

Hope It will be helpful!!!

8 0
3 years ago
The coefficient of volume expansion of olive oil is 0.68 × 10-3 K-1. A 1.00-L glass beaker is filled to the brim with olive oil
Akimi4 [234]

Answer:

The coefficient of linear expansion of the glass is 2.08 x 10⁻⁴K ⁻¹

Explanation:

see the attached file

5 0
3 years ago
Help me please i need help quickly<br>does the lqmp act as a resistor​
gayaneshka [121]

Answer:

I don't know. sry

Explanation:

I'm really sorry

7 0
3 years ago
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