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
vova2212 [387]
2 years ago
5

A. Water has many unique properties. Identify a property of water and explain why this property makes water vital to living orga

nism.
b. Write one or two sentences that summarize Pascal's principle.

c. A force of 14,00 N is exerted on a piston that has an area of 0.020 m^2. What is the force exerted by a second piston that has an area of 0.040 m^2.

d. An object's weight is greater than its buoyant force in water. What would you expect to happen when the object is placed in water? Explain your answer.

e. A cannon is recovered from a shipwreck. Why does the buoyant force on the cannon stay the same as long as it is fully under water? Explain your reasoning.

f. An object sinks in both water and soil, so it displaces the same volume of each liquid. Oi is less dense than water. Why is the buoyant force acting on the object greater in water than it is in oil?

g. Use the flow rate equation to help explain how the motion of a whitewater raft changes as the river channel becomes narrower.
Physics
1 answer:
rosijanka [135]2 years ago
8 0

a) It can dissolve other substances and has high specific heat capacity.

b) Pressure is transferred equally in all directions

c) F=14*0.04/0.02=28 N

d) I'd expect that it will sink cause weight will pull it to the bottom

e) Because the buoyant force is stipulated by difference between pressures in the top and bottom surfaces of a body.

f) Because this force increases in denser liquids: F_b=\rho gV, where rho is density.

g) Q=Av, where v - speed, A - area. With the same flow rate v=Q/A, so larger area decreases speed and vice versa.

You might be interested in
Scientists can use spectral analysis of stars to determine which of the following?
RoseWind [281]
I do believe all of these but core elements can be determined by spectroscopy which includes the use of electromagnetic radiation. Both the surface and core temperature can be measured using light. Surface elements can be found because the absorption lines of different elements in the spectra of the star, but I haven't heard anything about using spectral analysis for core elements.
4 0
3 years ago
Read 2 more answers
Which compound should require the highest temperature to melt? LiF, NaF, LiCl, NaCl
Jlenok [28]
Nacl is the answer hahahahaah ha
5 0
3 years ago
A transformer has 100 turns in its primary coil and 75 turns in its secondary coil. If the input voltage is 12.0 V, what is the
Sindrei [870]
Is 54 por que es igual
7 0
2 years ago
What is the internal energy of a system including the kinetic and potential energy of its particles?
Gekata [30.6K]

Internal energy of a system is the product of specific heat and temperature included with number of moles. (i=nCT) and kinetic energy is product of Boltzmann constant and temperature.

  • All systems have a certain amount of energy that can be converted into other energy to do work. The kinetic energy within the molecules and atoms that make up the body and the energy generated by the intermolecular forces between them are collectively called internal energy.
  • In other words, the energy hidden in the system that can appear under different conditions can be called the internal energy of the system.

Internal energy is the sum of two energies:

(a) Thermal energy, which is the kinetic energy of molecules in random motion, and

(b) Potential energy of atoms.

  • Potential atomic energy arises from the atomic forces acting between the atoms of molecules and the intermolecular forces between molecules.
  • Total internal energy, E = kinetic energy (K.E.) + potential energy (P.E.).
  • The state function describes the equilibrium state of the system, as well as the system itself.
  • It is called the state function because the internal energy U is defined by the quantity that determines the state of the system at equilibrium. It is completely determined by the initial and final state of the system.
  • As the temperature of the system increases, the molecules move faster, resulting in an increase in kinetic energy and an increase in internal energy.

To learn more about Internal energy -

<u>brainly.com/question/11623849</u>

#SPJ4

8 0
10 months ago
What are three foods that would be considered good energy sources?
jok3333 [9.3K]
Almonds, like many nuts, are one of the best plant sources of protein. Protein will help regulate your blood sugar and keep your energy level stable throughout the day. Oats contain the energizing and stress-lowering B vitamin family, which helps transform carbs into usable energy. Water, without water, your body cannot generate energy.
5 0
2 years ago
Read 2 more answers
Other questions:
  • SCIENCE HELP!!!!!!!!!!!!!!!!!!111
    8·2 answers
  • A bicycle travels 141 m along a circular track of radius 30 m. What is the angular displacement in radians of the bicycle from i
    5·1 answer
  • When a quarterback throws a football, the throwing arm is slowed down to rest during the deceleration phase. Of the angular velo
    5·1 answer
  • Which carries information by changing original sounds into numbers?
    11·2 answers
  • Which type of bonding is found in all molecular substances
    5·1 answer
  • A car moving at a velocity of 25m/s, so how much distance it will travel in 5 seconds?
    8·1 answer
  • A boy rolls a toy car across a floor with a velocity of 3.21 m/s. How long does it take the car to travel a distance of 4.50 m?
    12·1 answer
  • What is the weight of a 20 kg box on the Earth?<br> A) 2 N <br> B) 20 N<br> C) 200 N
    15·1 answer
  • 11. A disk 8.00 cm in radiu: rotates at a constant rate of 1200 revinin about its central axis Determine (a) its angular speed i
    10·1 answer
  • List and define all of Newton’s laws of motion.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!