What happens to friction when two objects are pressed together with more force?.

False.

a quantity  having direction as well as magnitude, especially as determining the position of one point in space relative to another.Vectors are quantities that are fully described by magnitude and direction. Not Length!

Answer:

B.) False

Explanation:

Please put my answer as brainlist answer

I hope it helps you

The new frequency also double the centripetal force on an object in circular motion is doubled while the object keeps the same radius of rotation.

The mass of the object is m .

The radius of the circle is r.

The new centripetal force F2 = 2F1 .

A force that causes a body to follow a curved path is known as a centripetal force, which derives from the Latin words centrum, "Centre," and petered, "to pursue." It always moves in a direction that is the opposite of the body's motion and in the direction of the fixed point of the path's immediate Centre of curvature. "A force by which bodies are dragged or driven, or in any other manner tend, towards a point as to a Centre," was how Isaac Newton defined it. The centripetal force that causes astronomical orbits in Newtonian physics is provided by gravity.

The scenario in which a body moves uniformly fast along a circular path is one frequent example of centripetal force. Towards the Centre of the object, the centripetal force is directed along the radius and at an angle to the velocity.

Learn more about centripetal force  here:

https://brainly.com/question/11324711

#SPJ4

Secondary rainbow is dimmer than a primary bow as : there is a second reflection with loss of light. The colors are arranged in the opposite order of the primary bow that is  red on the inside instead of the outside.

The intensity of light is reduced further by the second reflection, therefore secondary rainbows are not as bright as primary rainbows. Fewer light rays go through four-step sequence than the three-step sequence and the color scheme of the secondary rainbow is opposite of the primary rainbow.

Double reflection in a drop produces a secondary bow and because of this extra reflection, the secondary bow is much dimmer and its colors are also reversed.

To know more about double rainbow, refer

https://brainly.com/question/7965811

#SPJ4

Answer:

it's gravitational potential energy would have converted to kinetic energy half way back when it's falls

The pressure will become 2.68 atm when expressed in atmospheres.

The act of shifting a quantity's measurement between two units of measurement is known as unit conversion. Usually, multiplicative conversion factors are used, which change the value of the measured amount without altering its effects.

The metric system typically requires moving a decimal point in order to translate from one unit to another.

The given data is 39.5 \(lb/in^2\)

we have to convert it into atmospheres

The pressure is :

39.5  \(lb/in^2\) ×  \(\frac{1 atm}{ 14.7 lb/in^2}\)

because the conversion factor is 14.7  \(lb/in^2\)

thus the given pressure becomes ;

Pressure = 2.68 atm

The pressure will become 2.68 atm when expressed in atmospheres.

To know more about conversions you may visit the link which is mentioned below;

https://brainly.com/question/21437879

#SPJ4

Answer: lollllllllllllllllllllll

Explanation:

Answer:

C. oversaturated

Explanation:

Sana nakatulong

Answer:

The first one is C, and the second is not clear please show another photo

Explanation:

Answer:

the mass of the truck is 2 kg.

Explanation:

Given;

mass of the car, m₁ = 3 kg

initial velocity of the car, u₁ = 40 m/s

initial velocity of the truck, u₂ = 60 m/s

let the mass of the truck = m₂

Apply the principle of conservation of linear momemtum;

m₁u₁ = m₂u₂

m₂ = (m₁u₁) / u₂

m₂ = (3 x 40) / (60)

m₂ = 2 kg

Therefore, the mass of the truck is 2 kg.

The kinetic product of a reaction is the product with the lower activation energy and the kinetic product is favored when the temperature is high.

The kinetic product of a reaction is the product with the lower activation energy, meaning it can be formed more quickly. This product is favored when the temperature is high because it allows more molecules to overcome the activation energy barrier and proceed with the reaction.

To understand this concept better, we can look at an example reaction between two isomeric products: 2-butene and 1-butene. When the reaction is carried out at a low temperature, the thermodynamic product (1-butene) is favored because it has a lower energy state and is more stable. However, at a higher temperature, the kinetic product (2-butene) is favored because it can be formed more quickly due to its lower activation energy.

It's important to note that the favored product (kinetic vs thermodynamic) depends on the reaction conditions and may not always be the same.

For more such questions on activation energy, click on:

https://brainly.com/question/15083463

#SPJ11

The probable question may be:

The kinetic product of a reaction is the product with the _____________ and the kinetic product is favored when the temperature is _________

\(\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}\)

\(\\ \sf\longmapsto Acceleration=\dfrac{10-15}{0.08}\)

\(\\ \sf\longmapsto Acceleration=\dfrac{-5}{0.08}\)

\(\\ \sf\longmapsto Acceleration=-62.5m/s^2\)

The magnitude of the electric force between two charged particles is given by Coulomb's Law:

Where q_1 and q_2 are the charges of the particles, r is the distance between the charged particles and k is the Coulomb's Constant:

Since the magnitude of both charges is the same, the equation becomes:

The force and the distance between the particles are given, the value of k is known and the charge q is unknown. Isolate q from the equation:

Replace the values of r=24.04*10^-2m, F=87.96N as well as the value of k to find the magnitude of the charges:

Therefore, the magnitude of the charges in microCoulombs is: 23.78μC.

Answer:

Resistance, resistivity and drift velocity varies with relaxation time which is dependent on temperature.

Number of free electrons in a conductor remains invariant even if its temperature changes.Hence correct option is option D.

The given problem involves determining the value of inductance of an inductor in an electronic circuit, given the time constant characteristic of the circuit. Specifically, we are asked to find the value of L, the inductance of the inductor, if the time constant characteristic of the circuit is 4.00×10^-4 s.

To solve the problem, we need to use the relationship between the time constant, the inductance, and the resistance of the circuit. The time constant is defined as the product of the resistance and the capacitance, or the inductance and the resistance, depending on the type of circuit. In this case, we are dealing with an inductor, so the time constant is given by L/R, where L is the inductance and R is the resistance.We are given the time constant as 4.00×10^-4 s, so we can use this value and the resistance of the circuit to solve for the inductance.

The final answer is a number, which represents the value of inductance required for the circuit.Overall, the problem involves applying the principles of electronics, including time constants and inductance, to determine the value of an inductor in a circuit. It also requires an understanding of the relationship between these quantities and how to manipulate the equations to solve for specific values.

For more similar questions on topic Electronics.

https://brainly.com/subject/mathematics

#SPJ11

Answer: The gravitational force between two objects depends only on their masses.

Explanation:

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

Therefore, gravity relies on mass and distance, not just mass.

The correct answers are up, down, into the screen, and out of the screen.

When a charge is moving at an angle of 90 degrees to a magnetic field, it experiences no magnetic force. When a charge is moving parallel or anti-parallel to a magnetic field, it does not experience magnetic force.

Check all that apply in the following list: UpDownLeftRightInto the screenOut of the screen

A magnetic field is a field created by an electrical charge in motion, such as an electron or a current through a wire. A magnetic field's direction is determined by the direction of the current, with north and south poles corresponding to the direction of the current.

When a charged particle travels through a magnetic field, it experiences a magnetic force.The charge moves and experiences no magnetic force when it is perpendicular to the magnetic field.

Therefore, the correct answers are up, down, into the screen, and out of the screen.

To know more about down visit-

https://brainly.com/question/29088494

#SPJ11

Answer:

10.3 cm³

Explanation:

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

Original volume (V₁) = 10 cm³

Initial temperature (θ₁) = 20 °C

Final temperature (θ₂) = 50 °C

Cubic expansivity (γ) = 10¯³ K¯¹

Final volume (V₂) =?

γ = V₂ – V₁ / V₁(θ₂ – θ₁)

10¯³ = V₂ – 10 / 10( 50 – 20)

10¯³ = V₂ – 10 / 10(30)

10¯³ = V₂ – 10 / 300

Cross multiply

10¯³ × 300 = V₂ – 10

0.3 = V₂ – 10

Collect like terms

0.3 + 10 = V₂

10.3 = V₂

V₂ = 10.3 cm³

Thus, the volume at 50 °C is 10.3 cm³

Answer:

The Wavelength of the light would decrease from visible light into ultraviolet range A P E X

Explanation:

Classical physics predict that as the temperature is increased, the wavelength of the light would decrease from visible light into more energetic  ultraviolet range.

When an electric charge vibrates, an electromagnetic wave is produced.  Remember that heat is simply the kinetic energy of random motion. In a hot object, electrons vibrate in random directions and produce light as a result.

A hotter object produces more energetic vibrations, and thus emits more light —- it glows brighter. So far, so good. However, classical physics was unable to explain the shape of the blackbody spectrum.

As per the classical physics concepts, as the temperature increases, the wavelength of light becomes shorter and shifts to higher energy regions. Therefore, option A is correct.

To find more on blackbody radiation, refer here:

https://brainly.com/question/16749080

#SPJ5

Given that the direction sailboat is north and the distance traveled is d = 10 km

The direction of the wind is southeast and the force is

The sailboat travels the distance in time, t = 1 h

We have to find the work done by the wind and wind's power.

The diagram is shown below

The work done by the wind will be

The power of the wind will be

The angle at which the fourth order bright fringe appear on a viewing screen is 6.89°. If the wavelength is 750nm and distance between the two slits is 25um.

When the crest of a light wave coincides with the crest of another light wave then that interference is called as the bright fringe. The same thing happens with the dark fringe of light wave also, when the trough of one wave coincides with the trough of another wave then this results in the formation of dark fringes.

The angle of the bright fringe appear on a viewing screen can be calculated with the help of a formula:

sinθ = mλ/ d

where, θ = angle of bright fringe,

m = number of bright fringe,

λ = wavelength of the light wave,

d = distance between the two slits

sinθ = 4 × 750 × 10⁻⁹/ 25 × 10⁻⁶ = 0.12

θ = 6.89°

Therefore, the angle at which the fourth order bright fringe appear on a viewing screen is 6.89°.

Learn more about Monochromatic light here:

https://brainly.com/question/15884336

#SPJ1

Answer:

The tissues in a multicellular organism requires a circulatory system in other to deliver oxygen and food to the tissues while also removing carbon dioxide and metabolic wastes due the complexity of these activities

Explanation:

Multicellular organisms are organisms that are made of more than one cell. the more cells an organism has the more complex certain activities might be for the organism hence the tissues in a multicellular organism requires a circulatory system in other to deliver oxygen and food to the tissues while also removing carbon dioxide and metabolic wastes

Answer:

73.34 mph to 2dp

Explanation:

veolcity = distance/ time

55 / 0.75 = 73.34 mph

a ) v = v o + a t  ( the acceleration will be negative )

9.50 = 16.0 + a * 1.2

a * 1.2 = -16.0 + 9.50

a * 1.2 = - 6.5  

a = - 6.5 : 1.2

a = - 5.4167 m/s²

F = m * a = 950 kg * 5.4167 m/s²

F = 5,145.8 N ( the average force exerted on a car during braking )

b ) d = v o - a t² / 2

d = 16.0 * 1.2 - ( 5.4167 * 1.2² / 2 ) =

= 19.20 - 3.90 = 15.30 m

Answer:

100Ns

Explanation:

find velocity and then plug into momentum formula momentum=(velocity)(mass)

Answer:

5,000 kg-m/s going south

Explanation:

Since you're only given mass and height, not velocity. You have to find velocity first. The equation for velocity is v=2gh. We know gravity is 10 since it's given & height is also given which is 125m. After doing the math, it's 2,500. Now that you have velocity, you can plug velocity into the formula for momentum which is p=mv. 2.0 times 2,500 = 5,000 kg-m/s going south.

The energy released in the fission channel \($U_{92}^{235}\) → \(Br_{35}^{87}+La_{57}^{154}+3n$\) is 113.1 MeV.

Given:

the semi-empirical mass formula (SEMF) may be written in the form

\($m(Z,A)= Zm_p+ (A-Z)m_n-a_vA+a_SA^{2/3}+ a_c \frac{Z^2}{A^{1/3}}+ \frac{a_p}{A^{1/2}} \delta$\);

where \($m_p$\)is the mass of the proton and

\($m_n$\) is the mass of the neutron.

The five coefficients in the SEMF take on the following values in MeV:

\($a_v\) =15.8$,

\($a_s\)=17.8$,

\($a_c\) =0.71$,

\($a_a\)=23.7$,

\($a_p\)=11.2$

The nucleus \($U_{92}^{235}$\) can undergo spontaneous fission. One of the many fission channels is

\($U_{92}^{235}\) → \(Br_{35}^{87}+La_{57}^{154}+3n$\).

(a) Estimate the energy released in this channel.

For spontaneous fission:

\($U_{92}^{235}\) → \(Br_{35}^{87}+La_{57}^{154}+3n$\).

Mass of \($U_{92}^{235}\) = \(235m_{proton} + (235-92)m_n$\)

Mass of \($Br_{35}^{87} = 87m_{proton} + (87-35)m_n$\)

Mass of  \($La_{57}^{154} = 154m_{proton} + (154-57)m_n$\)

The total mass of the system before the fission,

\($235m_{proton} + (235-92)m_n$\)

The total mass of the system after the fission,

\($87m_{proton} + (87-35)m_n + 154m_{proton} + (154-57)m_n + 3m_n$\)

Total mass of the system before fission  \(= 235m_{proton} + (235-92)m_n$\)

Total mass of the system after fission  = \(87m_{proton} + (87-35)m_n + 154m_{proton} + (154-57)m_n + 3m_n$\)

The energy released during the fission reaction can be estimated using Einstein's equation,

E = Δmc²

where Δm is the difference in the mass of the nuclei before and after the fission reaction

.Δm = \([235m_{proton} + (235-92)m_n] - [87m_{proton} + (87-35)m_n + 154m_{proton} + (154-57)m_n + 3m_n]$$$\)

         \(= 235m_{proton} + 143m_n - 87m_{proton} - 121m_n\)

        \(= 148m_{proton} + 22m_n$$\)

The mass of proton, \($m_{proton}\)= 1.0073 amu

The mass of neutron, \($m_n\)= 1.0087 amu

The energy released during the fission reaction,

\($E = (148m_{proton} + 22m_n) c^2\)

\(E= (148(1.0073)+22(1.0087))(3 \times 10^8)^2\)

\(E= 181 \times 10^{12}J\)

E = 113.1 MeV

Thus, the energy released in the fission channel \($U_{92}^{235}\) → \(Br_{35}^{87}+La_{57}^{154}+3n$\) is 113.1 MeV.

(b) The Br-87 and La-154 nuclei produced after the fission reaction are highly excited and unstable. They will undergo beta decay and will eventually reach a stable configuration. The unstable Br-87 nucleus will decay to stable Kr-87 through beta decay and the unstable La-154 nucleus will decay to stable Ce-154 through beta decay.

Learn more about Fission from the given link:

https://brainly.com/question/29141330

#SPJ11

The pressure 30.0 meters under water which is 396 kPa, is approximately 3.91 atm and 2970.25 mmHg.

To convert the pressure 30.0 meters under water, which is 396 kPa, to atm and mmHg:

1. To Convert kPa to atm
To convert the pressure from kPa to atm, you can use the following conversion factor:
1 atm = 101.325 kPa

So, divide the pressure in kPa (396 kPa) by the conversion factor (101.325 kPa/atm):
396 kPa / 101.325 kPa/atm = 3.91 atm (approximately)

The pressure 30.0 meters under water in atm is approximately 3.91 atm.

2. To Convert kPa to mmHg
To convert the pressure from kPa to mmHg, you can use the following conversion factor:
1 kPa = 7.50062 mmHg

Multiply the pressure in kPa (396 kPa) by the conversion factor (7.50062 mmHg/kPa):
396 kPa * 7.50062 mmHg/kPa = 2970.25 mmHg (approximately)

The pressure 30.0 meters under water in mmHg is approximately 2970.25 mmHg.

In summary, the pressure 30.0 meters under water, which is 396 kPa, is approximately 3.91 atm and 2970.25 mmHg.

Learn more about pressure at: https://brainly.com/question/28012687

#SPJ11