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ivann1987 [24]
4 years ago
13

What happens when a muscle contracts

Physics
1 answer:
Alisiya [41]4 years ago
8 0
Well, your muscles are made of of the two (most important)  filaments. When one of them moves over the other <span>filaments, the muscles is contracted. If there is an answer choice, I may be able to provide you with a more accurate answer, if this did not already help. ;)</span>
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A 1000-kilogram truck accelerates uniformly from rest, reaching a speed of 50 meters per second in 10 seconds. During the 10 sec
Nata [24]

Answer:

250 m

Explanation:

1. First, we have to calculate the acceleration:

\boxed{\mathsf{v=v_o+a\cdot t}}

where:

v = present velocity

vo = initial velocity

a = acceleration

t = time

2. Let us use given information and substitute in the expression above. Hence:

\mathsf{50=0+a\cdot10}\\\\\mathsf{50=10\cdot a}\\\\\mathsf{a=\dfrac{50}{10}}\\\\\therefore \boxed{\mathsf{a=5\,m/s^2}}}

3. Now we can calculate traveled distance with <u>Torricelli's equation</u>:

\boxed{\mathsf{v^2=v_o^2+2\cdot a \cdot d}}

where:

v = present velocity

vo = initial velocity

a = accelerarion

d = distance

4. So, we get:

\mathsf{50^2=0^2+2\cdot 5 \cdot d}\\\\\mathsf{2500=10\cdot d}\\\\\mathsf{d=\dfrac{2500}{10}}\\\\\therefore \boxed{\mathsf{d=250\,m}}

<u>Conclusion</u>: during 10 seconds the truck has traveled a distance of 250 m.

Have a nice day! : )

8 0
3 years ago
What stops the earth from moving away from the sun ?
DiKsa [7]

Answer: the poles

Explanation:

3 0
2 years ago
• Can you explain why scientific theories will change over time?
marishachu [46]
Because as we develope into our times from today to tomorrow and the next, us as a human race will never stop discovering 

3 0
3 years ago
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Type of mirror used as a side mirror on a vehicle to provide a wide angle view...
NeTakaya

Answer:

yes done first thing tomorrow

3 0
3 years ago
Read 2 more answers
Which property helps to explain differences in the specific heat capacities of
tatyana61 [14]

Answer:

D. Forces between molecules

Explanation:

Specific heat capacity of water can be defined as the amount of heat a gram of water must lose or absorb in order to change its temperature by a degree Celsius. It is measured in Joules per kilogram per degree Celsius (J/kg°C). Generally, the specific heat capacity of water is 4.182J/kg°C and is the highest among liquids.

Mathematically, the specific heat capacity of a substance is given by the formula;

c = \frac {Q}{mdt}

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

Cohesion is a property of water and it typically refers to the attraction between molecules of water which holds them together.

In Science, the property which helps to explain differences in the specific heat capacities of two substances is the forces between molecules.

This ultimately implies that, the more closely bonded the atoms of a substance are, the higher or greater would be the substance's specific heat capacity. Thus, it varies for the various states of matter i.e solid, liquid and gas.

4 0
3 years ago
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