1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shutvik [7]
3 years ago
13

The muscles of the body are part of the muscular system but would not operate without the _______ system providing the impulses

that cause the muscles to act.
Chemistry
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer:

The nervous system

Explanation:

The nervous system send messages from the brain to the muscles to move.

You might be interested in
The density of copper is a...
Reil [10]

Answer:

B. physical property is the answer

7 0
3 years ago
The cell membrane that surrounds the cell acts as a _____.
kicyunya [14]

Answer: Option B

Explanation:

Cell membrane can be defined as the outermost covering of the cell which allows the movement of particles across membrane. The particles are allowed to move from inside of the cell to the outside of the cell and from outside to inside of the cell.

This kind of a membrane is known as selectively permeable which allows the movement of certain molecules only.

hence, the correct answer is option B

5 0
3 years ago
1.29 g piece of lead has a temperature of 26.0 °C. If it loses 1.90 J of heat to its surroundings, what is its new temperature.
malfutka [58]

The new temperature of the piece of lead will be 37.5°C

SPECIFIC HEAT CAPACITY:

  • The amount of heat absorbed or released by a substance can be calculated by using the following formula:

Q = m × c × ∆T

Where;

Q = quantity of heat absorbed or released (J)

m = mass of substance (g)

c = specific heat capacity

∆T = change in temperature (°C)

According to this question,

Q = 1.90J

m = 1.29g

T1 = 26°C

T2 = ?

c = 0.128 J/g°C

1.90 = 1.29 × 0.128 × (T2- 26°C)

1.90 = 0.165 (T2 - 26°C)

1.90 = 0.165T2 - 4.29

1.90 + 4.29 = 0.165T2

6.19 = 0.165T2

T2 = 37.5°C

Therefore, the new temperature of the piece of lead will be 37.5°C.

Learn more: brainly.com/question/20514651?referrer=searchResults

5 0
2 years ago
Miners discover a new vein of metal in the mine they are excavating. They send a sample to your lab so you can determine what ty
svp [43]
Answer: option A. Cobalt

Explanation:

1) Data:

Q = 1.24 × 10⁶ J
m = 2 kg
Tf = 1768 K
Ti = 298 K
Cs = ?

2) Formula:

Q = m Cs ΔT
ΔT = Tf - Ti = 1,768K - 298K = 1,470K

3) Calculations:

i) Solve for Cs:

Cs = Q / [ m ΔT]

ii) Substitute the data:

Cs = 1.24 × 10⁵ J / [ 2kg (1768K - 298K) ] = 421 J / (kg K)

4) Compare with the specific heats (Cs) of the vaious metals given and you find that it is Cobalt.

8 0
3 years ago
Salt water boils at higher temperature with pure water under standard atmospheric pressure true or false ?
Ronch [10]

All liquids, at any temperature, exert a certain vapor pressure. The vapor pressure can be thought of as the degree to which the liquid molecules are escaping into the vapor phase. The vapor pressure increases with temperature, because at higher temperature the molecules are moving faster and more able to overcome the attractive intermolecular forces that tend to bind them together. Boiling occurs when the vapor pressure reaches or exceeds the surrounding pressure from the atmosphere or whatever else is in contact with the liquid.

At standard atmospheric pressure (1 atmosphere = 0.101325 MPa), water boils at approximately 100 degrees Celsius. That is simply another way of saying that the vapor pressure of water at that temperature is 1 atmosphere. At higher pressures (such as the pressure generated in a pressure cooker), the temperature must be higher before the vapor pressure reaches the surrounding pressure, so water under pressure boils at a higher temperature. Similarly, when the surrounding pressure is lower (such as at high altitudes), the vapor pressure reaches that pressure at a lower temperature. For example, in the Denver, Colorado area of the U.S. where the elevation above sea level is approximately one mile (1600 meters), the atmospheric pressure is about 83% of a standard atmosphere, and water boils at approximately 95 degrees Celsius

7 0
2 years ago
Other questions:
  • Select the correct answer. Why were industrial and agricultural surpluses a problem for the US economy? A. The United States did
    5·2 answers
  • 4. Will the net force be balanced or unbalanced?<br> 7N<br> 4N<br> A. Balanced<br> B. Unbalanced
    5·1 answer
  • sulfur (s) is in group 16 of the periodic table. how many valence electrons dos an atom of sulfur have?
    9·1 answer
  • Draw the curved arrow mechanism for the addition of HCN in water with NaOH to heptan-4-one to give the corresponding cyanohydrin
    6·1 answer
  • 1.The movement of particles from a less crowded area to a more crowded area requires
    11·1 answer
  • What is the balanced equation for H3PO4=H4P2O7+H2O
    9·1 answer
  • State hess's law.how is it used
    6·2 answers
  • The amount of protein in a sample was measured by the sample's absorbance of light at a given wavelength. Using standards, a bes
    9·1 answer
  • If 0.500 mol neon at 1.00 atm and 273 K expands against a constant external pressure of 0.100 atm until the gas pressure reaches
    12·1 answer
  • For each of the following choose the variable that will be more favorable in solution formation. A) Weak or Strong Solvent inter
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!