Which part of the curve shows:
a. acceleration
b. zero acceleration
c. deceleration
d. zero velocity

Answer:

3 because

Explanation:

60÷20=3 ans is this

velocity and wavelength are likely to change in the process

        https://brainly.com/question/12571787

         #SPJ4

More stopping force is required when the car has to stop in a shorter distance.

Force is directly proportional to acceleration according to Newton's second law of motion.

This means that acceleration increases when force increases.

Stopping of a moving car is negative acceleration.

Therefore, more stopping force is required when the car has to stop in a shorter distance.

Learn more about force and acceleration at: https://brainly.com/question/14343220

#SPJ1

Answer:

See below

Explanation:

Each resistor has 6 v applied across it

rememeber

V = IR     then     V/R = I

for the 6 Ω      6 v /6Ω  = 1 amp

for the 3 Ω       6v /3Ω = 2 amp

The statement 'all energy in the universe is a result of mass being converted into energy' correctly describes mass-energy equivalence.

The expression mass-energy equivalence refers to the proportion of matter that can be converted into energy in the universe.

This mass-energy equivalence is an outcome of process of converting mass into energy.

In conclusion, the statement 'all energy in the universe is a result of mass being converted into energy' correctly describes mass-energy equivalence.

Learn more about mass-energy equivalence here:

https://brainly.com/question/3171044

#SPJ1

Answer:

C

Explanation:

Answer:

8.35 × [tex]10^{-3}[/tex] kg

Explanation:

Remember the formula for heat:

[tex]Q=mc\Delta T[/tex]

You just need to solve for m, doing so you're left with:

[tex]m=\dfrac{Q}{c\Delta T}[/tex]

Replace the variables with numbers and that's it.

The net force on the cylinder depends on several independent variables such as mass, acceleration, velocity, time, etc, and it is given as F(net) = ma.

The net force on the cylinder is calculated from Newton's second law of motion.

F(net) = ma

F(net) = m(v/t)

where;

Thus, the net force on the cylinder depends on several independent variables such as mass, acceleration, velocity, time, etc, and it is given as F(net) = ma.

Learn more about net force here: https://brainly.com/question/11556949

#SPJ1

Answer:

B

Explanation:

Remember:

F = m * a

 =  10 * 2  = 20 N

Johannes Kepler contributed to the study of planets : He provided mathematical support for the heliocentric model.

Kepler's first law of planetary motion states that the planets revolve around the Sun in orbits elliptical in shape with the Sun at its one of the focus.

As the planets rotate around the Sun, the relative distance between the Sun and planets increases and decreases.

The heliocentric model in which the Earth and planets revolve around the Sun at the center of the universe. Johannes gave the mathematical calculations of this model.

Thus, last option is correct.

Learn more about Kepler's first law of planetary motion.

https://brainly.com/question/4978861

#SPJ1

Answer:

D

Explanation:

Answer:

The equation for wavelength is λ = v/f

Explanation:

λ is wavelength

v = velocity

f = frequency

D. It allows the flow of an electric current in the circuit.

Closed circuit allows the flow of current in the circuit from the battery to the bulb. If the circuit is open then the current will not reach to the bulb or other appliances.

So we can conclude that It is important to have a closed circuit because it allows the flow of an electric current in the circuit.

Learn more about circuit here: https://brainly.com/question/2969220

#SPJ1

Answer:

π/10 rads

Explanation:

It takes an hour (60 minutes) for the minute's hand to turn a full circle or achieve an angular rotation of

2πl rad.

Now, number of periods of 3 minutes in an hour is;

Number of periods = 60/3 = 20 periods

Thus, 3 minutes rotation accounts for 1/20 of 2π the rotation of the minute's hand in an hour.

Thus;

Angular displacement = (1/20) * 2π = π/10 rads

The work done on the filled bucket in raising out of the hole is 2, 925 Joules

Using the formula:

Work done = force * distance

Note that force = mass * acceleration

F = mg + ma

F = 4. 5 * 10 + 28 * 10

F = 45 + 280

F = 325 Newton

Distance = 9m

Substitute into formula

Work done = 325 * 9

Work done = 2, 925 Joules

Therefore, the work done is 2, 925 Joules

Learn more about work done here:

https://brainly.com/question/25573309

#SPJ1

Answer:

Answer 740 H z, 1110 H z, 1480 H z

Explanation:

The F sharp note (370 Hz) makes the next three harmonics with frequencies of 740 Hz, 1110 Hz, and 1480 Hz, respectively.

It is necessary to have an understanding of the relationship between harmonics and the fundamental frequency in order to calculate the frequencies of the following three harmonics produced by the note F sharp, which has a pitch of 370 Hz.

The fundamental frequency, denoted by f1, is the first harmonic and corresponds to the frequency of the note (F sharp in this example) when it was initially played. Its pitch is 370 hertz.

The fundamental frequency (f1) is multiplied by two to get the second harmonic frequency (f₂), which is written as f₂ = 2 × f1.

The frequency of the third harmonic (f₃) is equal to three times the frequency of the fundamental tone, or f₃ = 3 × f₁.

The frequency of the fourth harmonic, denoted by f₄, is equal to four times the frequency of the fundamental tone. f₄ = 4 × f₁

If we know that the fundamental frequency, or f₁, is 370 hertz, then we can figure out the frequencies of the following three harmonics, which are as follows:

f₂ = 2 × 370 Hz, which equals 740 Hz

f₃ = 3 times 370 Hz, which equals 1110 Hz; f₄ = 4 times 370 Hz, which equals 1480 Hz

Following the frequency of the F sharp note (370 Hz), the next three harmonics produced have frequencies of 740 Hz, 1110 Hz, and 1480 Hz respectively.

To know more about frequency

https://brainly.com/question/254161

#SPJ2

The limestone is hard and compact and can be grinded into fine grained calcareous rocks and this contributes to its usefulness.

Limestone is a type of sedimentary rock that is mainly made up of mineral calcite (calcium carbonate, CaCO3).

Their physical properties include the following;

Therefore, the limestone is hard and compact and can be grinded into fine grained calcareous rocks and this contributes to its usefulness.

Learn more about calcium here:

https://brainly.com/question/26636816

#SPJ11

The Sun is 400 times larger than the Moon, yet since it is 400 times further away from Earth than the Moon, they appear to be the same size in the Earth's sky.

Answer:

it is easier to kick a stone than to drag a stone.

Explanation:

the science behind the question is fairly simple.

when you kick and object for say a (rock) you have inertia which is made from you clocking your leg back and swinging it full force forward. when you kick with inertia, you will have a much further travel distance of the object rather than dragging it which is almost set at a certain rate of how fast you are moving (m) and how much inertia you are using by pulling (p)

so m+p=i for inertia. hope this  helped

The minimum coefficient of friction to avoid slippage of the coin is 0.23.

The minimum coefficient of friction can determined from the maximum speed of the coin.

ma = μmg

mv²/r = μmg

v²/r = μg

v² = μgr

μ = v²/(gr)

μ = (ωr)²/(gr)

μ = ω²r/g

μ = (7.95² x 0.035)/(9.8)

μ = 0.23

Learn more about coefficient of friction here: https://brainly.com/question/20241845

#SPJ11

Answer:b

Explanation:

Answer:

Acceleration of this man: approximately [tex]0.52\; {\rm m\cdot s^{-1}}[/tex] due east.

Accelerate of this woman: approximately [tex]0.78\; {\rm m \cdot s^{-1}}[/tex] due west.

Explanation:

The question implies that the net force on the man is [tex]F = 46\; {\rm N}[/tex] due east. The mass of the man is [tex]m = 89 \; {\rm kg}[/tex]. The acceleration of the man would be:

[tex]\begin{aligned} a &= \frac{F}{m} \\ &= \frac{46\; {\rm N}}{89\; {\rm kg}} && \genfrac{}{}{0}{}{(\text{due east})}{} \\ &\approx 0.52\; {\rm m\cdot s^{-2}} && (\text{due east})\end{aligned}[/tex].

In other words, the acceleration of this man would be approximately [tex]0.52\; {\rm m \cdot s^{-2}}[/tex] due east (same direction as the net force.)

By Newton's Laws of Motion, for every force there is a reaction force that is equal in magnitude but opposite in direction.

The woman in this question is applying a due east [tex]46\; {\rm N}[/tex] force on the man. Thus, this woman would experience a reaction force of the same magnitude ([tex]46\; {\rm N}\![/tex]) and opposite direction (due west) from the man. Under assumptions of the question, the net force on the woman would be [tex]\! 46\; {\rm N}[/tex] due west.

The acceleration of this [tex]m = 59\; {\rm kg}[/tex] woman would be:

[tex]\begin{aligned} a &= \frac{F}{m} \\ &= \frac{46\; {\rm N}}{59\; {\rm kg}} && \genfrac{}{}{0}{}{(\text{due west})}{} \\ &\approx 0.78\; {\rm m\cdot s^{-2}} && (\text{due west})\end{aligned}[/tex].

Answer:

143.6/21.2

=6.773584906

=6.8

The magnetic field strength willl be 2 T. A force known as the Lorentz force acts on the charge when it is subject to an electric and magnetic field.

Lorentz force is defined as the force acting on point charge when it is moving in an electric and magnetic field.

The given data in the problem is ;

B is the magnetic field strength =? T.

Current, I =?

L is the length of the wire

The magnetic force is found as;

F= BIL

15 N  = B × 3 A ×  2.5 m

B = 2 T

Hence, the magnetic field strength willl be 2 T.

To learn more about the Lorentz force refer to the link;

https://brainly.com/question/13791875

#SPJ1

The water pressure is greatest at point B which has a larger diameter in this scenario.

This is defined as the force per unit area of a substance with its unit being Pascal.

The larger diameter will have more force acting on the sides which translates to a greater pressure.

Read more about Pressure here https://brainly.com/question/25736513

#SPJ1

The first law of thermodynamics is similar to the conservation of energy because both state that this element (i.e., energy) is not created/destroyed in the universe.

The first law of thermodynamics is a popular law in physics that states change in internal energy is equal to the energy added and the work made by a closed system.

Moreover, the law of conservation of energy states that it cannot be created/destroyed in the Universe, which is deeply associated with principles of thermodynamics.

In conclusion, the first law of thermodynamics is similar to the conservation of energy because both state that this element (i.e., energy) is not created/destroyed in the universe.

Learn more about the first law of thermodynamics here:

https://brainly.com/question/1613201

#SPJ1

The law of the conservation of energy relates to the first law of thermodynamics by the fact that the former forms the basis for the latter.

It follows from the study of physics that the basis for the postulation of the First law of thermodynamics is on the basis of the law of conservation of energy, which states that energy can neither be created nor destroyed, but can be transferred between forms.

Read more on law of conservation of energy;

https://brainly.com/question/166559

#SPJ11

Closed loop, conductor medium and presence of current in the wire are the conditions must be met so that a current flows.

The loop from where the current passes must be closed. There must be some current in the circuit in order to lit the bulb. The medium through which current flows should be a conductor.

So we can conclude that closed loop, conductor medium and presence of current in the wire are the conditions must be met so that a current flows.

Learn more about current here: https://brainly.com/question/24858512

#SPJ1

According to Puddicombe, the result of  not taking any time out to simply look after our brains is that:

In his popular talk, Puddicombe explained that we have been caught up with the internet and other activities so much so that we do not have time to look out for our brains.

For this reason, we stress our brains and become distant from the most important things in life.

Learn more about our brains and stress here:

https://brainly.com/question/154477

#SPJ1

The apparent magnitude of a star refers to its brightness as seen from your eyes and absolute magnitude being the actual brightness of a star.

Magnitude can be defined as a unitless measure which is used to show the brightness of an object in comparison with the brightness of another object.

Basically, there are two types of magnitude and these include the following:

In conclusion, the apparent magnitude of a star refers to its brightness as seen from your eyes and absolute magnitude being the actual brightness of a star.

Read more on absolute magnitude here: https://brainly.com/question/1056710

#SPJ1

I'm pretty sure it's apparent; absolute