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maria [59]
3 years ago
13

whirl a rock at the end of a string and it follows a circular path. if the string breaks, the tendency of the rock is to

Physics
1 answer:
bixtya [17]3 years ago
8 0

Answer:

whirl a rock at the end of a string and it follows a circular path. if the string breaks, the tendency of the rock is to stop

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What is the input of energy for a device that provides 50 units of useful energy and has an efficiency of 0.55?
marshall27 [118]

If that's the case, then 

                          50 units = 0.55 x the input energy

Divide each side by  0.55 :       

                   50 units/0.55  =  the input energy =

                              <em> 90 and 10/11 units</em>


3 0
4 years ago
An entomologist (bug scientist) wants to determine if temperature changes how many times a cricket chirps. What is the dependent
murzikaleks [220]

Answer:

Number of times a cricket chirps.

Explanation:

Let us use a graph to understand the function Here the entomologist wants to know the effect of temperature on the number of chirps of a cricket so, the chirps should vary with temperature. The opposite cannot be true i.e., the temperature is not dependent on the number of chirps rather the number of chirps are dependent on temperature.

So, the x axis will be represent the temperature and the y axis will represent the number of chirps.

Hence, the dependent variable will be number of times a cricket chirps i.e., the y axis.

8 0
3 years ago
Explain: Is it possible to convert milliliters to liters? How about milliliters to grams?
Advocard [28]

Answer:

yes, it is possible

Explanation:

To convert milliliters to liters, we divide by 1000.

To convert milliliters to grams, we multiply the volume (in ml) by the density (in g).

6 0
3 years ago
The blood pressure at your heart is approximately 100 mm Hg. As blood is pumped from the left ventricle of your heart, it flows
RoseWind [281]

Answer:

The correct option is c. 75 for this question

Explanation:

The correct option is c. 75 for this question:

Let's see how.

Continuity Equation is given as:

AcVc = AaVa

Where,

Aa = Area of Aorta

Ac = Area of the capillary

Va = Fluid speed in Aorta

Vc = Fluid speed in Capillary

So,

Assuming the fluid is the ideal one/

\pi/4 Dc^{2} Vc= \pi/4 Da^{2} Va

Dc^{2} Vc= Da^{2} Va

Dc = Da x \sqrt{\frac{Va}{Vc} }

Dc = 2.5 cm x \sqrt{\frac{60 cm}{0.07 cm } }

Dc = 73.192 cm

Dc = 75 approximately

Hence, the diameter of the capillary = 75 cm approximately  

3 0
3 years ago
How do objects move under the influence of gravity?
Nady [450]

Under the influence of gravity, objects just move down to the earth.

PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)

4 0
3 years ago
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