Explain sound in the terms of force and energy transfer! :> Giving brainiest as well!

Answer:

Force

Explanation:

You can't "make" things move but you can apply enough force on to an object for it to move, pls brainliest!

(A) The water will shrink when is heated above 4°C. (B).water at an initial temperature of 33.3°C will be expand by twice as much when it is raised by 1°C compared to water at 30°C.

The anomalous expansion of water refers to the fact that its volume increases upon cooling from 4°C to 0°C, and then contracts upon further cooling to 0°C, and continues to contract upon further cooling. Similarly, when water is heated, its volume first contracts until it reaches 4°C, and then expands upon further heating.

To determine at what temperature water shrinks when heated, we need to find the point at which the coefficient of volume expansion, β, becomes negative. The coefficient of volume expansion is defined as the fractional change in volume per degree Celsius change in temperature, i.e.,

β = (1/V)  (dV/dT)

where V is the volume of the water and dV/dT is the rate of change of volume with respect to temperature.

At temperatures below 4°C, the coefficient of volume expansion is positive, indicating that water expands upon heating. However, at temperatures above 4°C, the coefficient of volume expansion becomes negative, indicating that water contracts upon heating.

Therefore, water will shrink when heated above 4°C.

To determine the initial temperature at which water will expand by twice as much when raised by 1°C, we can use the formula for the coefficient of volume expansion:

β = (1/V)  (dV/dT)

We want to find the initial temperature T such that

(dV/dT)T = 2 (dV/dT)30

where (dV/dT)T is the rate of change of volume with respect to temperature at temperature T, and (dV/dT)30 is the rate of change of volume with respect to temperature at 30°C.

Using the coefficient of volume expansion for water, we have

β = 3α

where α is the coefficient of linear expansion, which is approximately constant for small temperature changes. Therefore, we can write

(dV/dT) = V × 3α

Substituting this into the equation above and simplifying, we get

T = 30 + 10/3 = 33.3°C

Therefore, water at an initial temperature of 33.3°C will expand by twice as much when raised by 1°C compared to water at 30°C.

To know more about water

https://brainly.com/question/29668257

#SPJ1

The values ​​of q1 and q2 in which the resultant electric force exerted on each of the other three charges zero is - 4C.

The value of charges q1 and q2 is calculated by applying the formula for electric force as shown below.

F = (kqₙqₓ) / (d²)

where;

If the force exerted on each of the other three charges is zero, then

F₁₃ + F₃₄ = 0

F₂₃  +   F₃₄ = 0

F₁₃ = (k x q₁ x 8) / (d²)

F₂₃ = (k x q₂ x 8 ) / (d²)

F₃₄ = (k x 8 x 4 ) / (d²)

F₁₃ = - F₃₄

(k x q₁ x 8) / (d²)  = -  (k x 8 x 4 ) / (d²)

8q₁ = - 32

q₁ = -32 / 8

q₁ = - 4 C

F₂₃ = - F₃₄

(k x q₂ x 8 ) / (d²) = -  (k x 8 x 4 ) / (d²)

q₂  = - 4 C

Learn more about electric force here: https://brainly.com/question/17692887

#SPJ1

Answer:

Forwarded

Explanation:

Answer:

An instrument for measuring the density of liquids.

Explanation:

A hydrometer is an instrument used to determine specific gravity. It operates based on the Archimedes principle that a solid body displaces its own weight within a liquid in which it floats. Hydrometers can be divided into two general classes: liquids heavier than water and liquids lighter than water.

Thermohydrometers is one type of hydrometer.

Answer: Displacement = -2.39 m

Explanation: The displacement of an object is the difference between its final position and its initial position. In this case, the object moved from x = -1.88 m to x = -4.27 m, so its displacement is:

Displacement = Final position - Initial position

Displacement = (-4.27 m) - (-1.88 m)

Displacement = -4.27 m + 1.88 m

Displacement = -2.39 m

Therefore, the displacement of the object is -2.39 m.

Please mark me brainliest if you understand now! Thank you

Answer:

5.92×10⁷ J

Explanation:

We'll begin by converting 15 tons to Newton. This can be obtained as follow:

1 ton = 9806.65 N

Therefore,

15 ton = 15 ton × 9806.65 N / 1 ton

15 ton = 147099.75 N

Next, we shall convert one-quarter (¼) or 0.25 mile to metre. This can be obtained as follow:

100 mi = 160934 m

0.25 mi = 0.25 mi × 160934 / 100 mi

0.25 mi = 402.335 m

Finally, we shall determine the Workdone. This can be obtained as follow:

Force (F) = 147099.75 N

Distance (d) = 402.335 m

Workdone (Wd) =?

Wd = F × d

Wd = 147099.75 × 402.335

Wd = 5.92×10⁷ J

Thus, the Workdone is 5.92×10⁷ J

Explanation:

density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.

The relative density of a substance is defined as the ratio of the density of that substance to the density of water at 4oC. It is also defined as the ratio of the mass of substance to the mass of equal volume of water at 4oC. i.e., R.D. = Mass of the substance / mass of an equal volume of water at 4oC

The wave speed is 01 m/s, which can be calculated by using the formula:

wave speed distance between two successive maxima/time interval between two successive maxima

In this case, the distance between two successive maxima is given as 1.2m and the time

interval between two successive maxima is given as 12s.

So, the wave speed can be calculated as:

wave speed = 1.2m/12s = 0.1 m/s

It is worth mentioning that the wave speed is a scalar quantity, which means it has only magnitude and no direction. The given information is about the transverse wave which is a type of wave in which the oscillation is perpendicular to the direction of energy transfer

Learn more about oscillations here:

https://brainly.com/question/30111348

#SPJ4

Answer:

The correct answer is d.

Theories are constructed after there is numerous data collected during the experiment.

Explanation:

hope it helps

Answer:

A.Law of friction

Explanation:

because friction is the move chair floor

false

normal force always acts perpendicular to the contact force

Answer: B

Explanation: the energy stored in the bowstring is a result of the elastic nature of the string (k) how far the bow has been stretched (x).

elastic potential energy is the energy stored in any elastic material when stretched.

Answer:

un café y a seguir pensando porque no se la respuesta xd

The volume of the rock, given the data is 14 mL (Option A)

From the question given above, the following data were obtained:

The volume of the rock can be obtained by calculating the displacement of the water when the rock was added. this can be obtained as follow:

Displacement of water = (Volume of water + rock) - (volume of water)

Displacement of water = 34 - 20

Displacement of water = 14 mL

Thus, the volume of the rock is 14 mL

Learn more about volume of irregular object:

https://brainly.com/question/27911332

#SPJ1

Complete question:

See attached photo

Answer:

I don't k own what it is dad fjf f fjff

Answer:

Explanation:

Stellar parallax is the apparent shift of position of any nearby star against the background of distant objects

Answer:

Attract

Explanation:

The balloons attract each other due to electrons.

Hope this helps :)

In general, option c - warming it up on the stove - is often an effective method to increase the reaction rate.

Increasing the temperature of a reaction generally leads to faster reaction rates. This is because higher temperatures provide more thermal energy to the reactant particles, causing them to move faster and collide more frequently. The increased collision frequency and energy lead to more successful collisions and a higher likelihood of effective molecular interactions, which speeds up the reaction. On the other hand, options a and b - putting it in the fridge where it is cold or covering it with a blanket to make it dark - are unlikely to have a significant effect on the reaction rate. While temperature can influence reaction rates, cooling the reaction or making it dark typically reduces the kinetic energy of the particles, resulting in slower reaction rates. Option d - there is nothing you can do to change the speed of the reaction - is not accurate. The reaction rate can be influenced by various factors such as temperature, concentration, catalysts, and surface area, among others. By manipulating these factors, it is often possible to control and change the speed of a reaction. Hence option c, is correct

for more questions on reaction
https://brainly.com/question/4431224
#SPJ8

Answer:

Young's Modulus = 6 x 10⁶ Pa = 6 MPa

Explanation:

First we need to find the stress on tendon:

Stress = Force/Area

Stress = 11.2 N/πr²

Stress = (11.2 N)/π(4.45 x 10⁻³ m)²

Stress = 180 x 10³ Pa

Now, we calculate the strain:

Strain = Change in length/Original Length

Strain = (9 x 10⁻³ m)/(0.3 m)

Strain = 0.03

Now, we calculate the Young's Modulus:

Young's Modulus = Stress/Strain

Young's Modulus = (180 x 10³ Pa)/0.03

Young's Modulus = 6 x 10⁶ Pa = 6 MPa

Hi there!

\(\large\boxed{1560 kgm/s}\)

Recall that:

P = m · v, where:

P = momentum

m = mass (kg)

v = velocity (m/s)

Thus:

P = 156 · 10

P = 1560 kgm/s

a) The value of the vector A + B is i + 2j + k and |A + B| is √6 units.

Given:

A = i + j

B = j + k

A + B = i + j + j + k

= i + 2j + k

|A + B| is the magnitude of the vectors A and B

|A + B| = √(1² + 2² + 1²)

= √(1 + 4 +1)

= √6

b) The vector 3A - 2B has the value of 3i + j -2k

Given:

A = i + j

3A = 3i + 3j

B = j + k

2B = 2j + 2k

3A - 2B = 3i + 3j - 2j - 2k

= 3i + j -2k

c) The scalar product of the vector that is A • B is equal to 3 units

The scalar product is calculated as follows:

A • B = i + j • j + k

= 1 + 1 * 1 + 1

= 1 + 1 + 1

= 3 units

d) The vector product or A x B is i - j + k and the magnitude of the same is √3 units.

                   i          j        k

A                 1          1        0

B                 0         1         1

The vector product is calculated as follows:

A x B = (1 * 1 - 1 * 0) i + (0 * 0 - 1 * 0) j + (1 * 1 - 0 * 1) k

= (1 - 0) i + (0 - 1) j + (1 - 0) k

= i - j + k

| A x B | = √(1² + (-1)² + 1²

= √1 + 1 + 1

= √3 units

Learn more about Vectors:

https://brainly.com/question/30394406

#SPJ1

Answer:

Potholes, large cracks, and a generally bumpy (and not smooth) road.

Explanation:

Rural roads tend to be poorly kept as they are not usually paid for by the city's tax money.

Poor road characteristics can include;

Potholes, fallen trees, uncovered water drains, and shoulder drop off (the shoulder – right side of the road past the solid white line – drops more than two inches from the road's surface).

SOURCE:

https://www.edgarsnyder.com/car-accident/cause-of-accident/bad-roads/hazardous-roads-types.html

Answer:

Yes, capacitor is the correct answer

Explanation:

(a) When you apply a force of 40 N, the magnitude of the horizontal component of the force that the floor exerts on the block is 51 N.

(b) When you apply a force of 59 N, the magnitude of the horizontal component of the force that the floor exerts on the block is 51 N.

The horizontal component of the force that the floor exerts on the block is determined by applying Newton's second law of motion;

\(F = ma\)

\(\Sigma F = 0\\\\F - F_f = 0\\\\F = F_f\)

\(F_f = F\\\\F_f = 51 \ N\)

where;

Since the surface (floor) is constant, the frictional force (horizontal component of the force that the floor exerts on the block ) will be the same on the cases.

Learn more about frictional force here: https://brainly.com/question/24386803

Based on the definition of limiting frictional force;

Force is any push or pull effect which tends to cause a change in the motion or shape of an object.

Based on Newton's third law, every force produces an equal and opposite reaction.

Therefore, the force that the floor exerts on the block is oppositely direction to the force exerted by the horizontal force acting on the block.

Since a horizontal force of 51 N applied to the block is required to keep the block moving across the floor at a constant speed, this is the limiting frictional force.

a) when a force of 40 N is applied to the block, the magnitude of the horizontal component of the force that the floor exerts on the block is equal to 40 N

b) when a force of 59 N is applied to the block, the magnitude of the horizontal component of the force that the floor exerts on the block is equal to 51 N, the limiting frictional force.

Learn more about limiting frictional force at: https://brainly.com/question/23092926

Answer:

gh

Explanation:

Answer:

The frictional torque is \(\tau = 0.2505 \ N \cdot m\)

Explanation:

From the question we are told that

   The mass attached to one end the string is \(m_1 = 0.341 \ kg\)

   The mass attached to the other end of the string is  \(m_2 = 0.625 \ kg\)

    The radius of the disk is  \(r = 9.00 \ cm = 0.09 \ m\)

At equilibrium the tension on the string due to the first mass is mathematically represented as

      \(T_1 = m_1 * g\)

substituting values

      \(T_1 = 0.341 * 9.8\)

      \(T_1 = 3.342 \ N\)

At equilibrium the tension on the string due to the  mass is mathematically represented as

      \(T_2 = m_2 * g\)

     \(T_2 = 0.625 * 9.8\)

      \(T_2 = 6.125 \ N\)

The  frictional torque that must be exerted is mathematically represented as

      \(\tau = (T_2 * r ) - (T_1 * r )\)

substituting values  

     \(\tau = ( 6.125 * 0.09 ) - (3.342 * 0.09 )\)

     \(\tau = 0.2505 \ N \cdot m\)

Answer:here to earn points

Explanation:

Answer:

669.1 ft and 743.1 ft

Explanation:

Given data

Lenght of wire= = 1000ft

Angle =  42˚

Applying SOH CAH TOA

1. How tall is the tower?

SOH

sine ∅= opp/hyp

sin 42= opp/1000

0.6691= Opp/1000

0.6691*1000= Opp

Opp=669.1 ft

Applying SOH CAH TOA

2.How far away from the base of the tower does the wire hit the ground?

CAH

cos ∅= adj/hyp

cos 42= adj/1000

0.7431*1000=adj

adj=743.1 ft

Answer:

\(\boxed {\tt s=133 \frac{1}{3} \ or \ 133.333333 \ km/hr}\)

Explanation:

We want to find speed, so we can use the following formula.

\(s=\frac{d}{t}\)

where \(d\) is the distance traveled and \(t\) is the time.

We traveled 400 kilometers in 3 hours. Therefore,

\(d= 400 \ km \\t= 3 \ hrs\)

Substitute the values into the formula.

\(s=\frac{400 \ km }{3 \ hrs}\)

Divide

\(s= 133.33333 \ km/hr\)

\(s= 133 \frac{1}{3} \ km/hr\)

The speed is 133 1/3 or 133.33333 kilometers per hour.