Which of the following does not represent a contact force?

Answer:

6amp

Explanation:

From Ohm's Law

V = IR

Where V = 12volts, R = 2ohms

12volts = I × 2ohms

I = 12/2

I = 6amp

The current flowing through the light bulb is 6amp

Answer:To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.

Explanation:

Answer:The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium

Explanation:i hope this is right

might stumble upon this substance one day and be curious about what it does.

Answer:

Equivalent resistance in series = 6 + 3 = 9 ohms

Current = V/R (ohm's law)

Current = 9/9 = 1 A

P.D. across 6 ohms = IR (ohm's law)

= 1A × 6Ω = 6V

Answer:

While the car is going towards the standing person on the sidewalk he is listening the pitch of the horn higher then it is.

When the car passes the person on the sidewalk and goes away, the horn's pitch become lower (for the person standing on the sidewalk).

For the driver, the pitch is always the same.

Explanation:

Is the doppler effect.

When the car is approaching, the sound waves must travel a smaller space than the previous one and they take less time to reach the standing person. So, sound waves reach the standing person with a higher frequency.

It happens the opposite when the car is going away: the sound waves need to travel more space and take more time to reach the person on the sidewalk. So, the frequency of the waves is lower.

Answer:

Direction

Explanation:

Speed is a scalar quantity, that is, it has only magnitude

While velocity is a vector quantity, which has both direction and magnitude.

Velocity is also called speed with direction.

Hence, we need to know the direction in which the car is moving in order to know the velocity.

Answer:

a. 10.2 N b. 1.73 c. 58.8 N d. 10.2 N

Explanation:

a. The force that will make the block slide down the plane

This is the component of the block's weight along the plane F = mgsinθ where m = mass of block = 1.2 kg, g = 9.8 m/s² and θ = angle of incline = 60°.

So, F = mgsinθ = 1.2 kg × 9.8  m/s² × sin60°.= 10.18 N ≅ 10.2 N

b. The coefficient of friction

The coefficient of friction, μ = tanθ = tan60° = 1.73

c. The normal reaction.

This is equal to the vertical component of the block's weight. So, F = mgcosθ. Substituting the values for the variables from above, we have

F = mgcosθ = 1.2 kg × 9.8  m/s² × cos60°.= 58.8 N

d. The frictional force

Since the block does not slide, there is no net force on it. If f is the frictional force, then

F - f = ma. Since a = acceleration = 0,

F - f = 0

f = F = mgsinθ = 1.2 kg × 9.8  m/s² × sin60°.= 10.18 N ≅ 10.2 N

Answer:

acc. = 4-(-6) /5= 10/5=2 m/s^2

Answer:

+1.5×10^-6C

................

Answer:

C. It triples in magnitude (PLATO)

When the induced electric current, if the number of loops is increased from one to three, it triples in magnitude. The correct option is C.

A shifting magnetic field causes an induced current. An induced emf accompanies the induced current. Without a battery in the circuit, a current can be generated.

The induced emf can be described using Faraday's law of induction. Induction is the method of creating current in a conductor by exposing the conductor to a shifting magnetic field.

Since there is no actual physical link between the conductor and the magnet, this phenomenon is known as induction. The magnetic field is said to induce the current in the conductor.

Therefore, the correct option is C. It triples in magnitude.

To learn more about electric current, refer to the link:

https://brainly.com/question/30033576

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Answer:A satellite maintains its orbit by balancing two factors its velocity the speed it takes to travel in a straight line and the gravitational pull that Earth has on it. A satellite orbiting closer to the Earth requires more velocity to resist the stronger gravitational pull.

Explanation:

Answer: The earth's gravity keeps it in orbit. The satellite's velocity keeps it moving.

Answer:

Gravity

Explanation:

The answer is gravity because when the 3 masses were hung from the spring, gravity pulled the spring towards the ground.

Answer:

36°

Explanation:

let n=10 images

n=360/theta

10=360/theta

theta=360/10

theta=36°

hope you help this

mark me as BRAINLIEST

Answer:

48.41 m/s

Explanation:

Answer: there is no sound in space

Explanation: there is no vacum in space for sound to travel, therfore no sound waves

Answer:

Height of the inclined plane = 2 m

Explanation:

Given:

Mechanical advantage of the plane = 5 m

Inclined plane = 10 meters

Find:

Height of the inclined plane = ?

Computation:

⇒ Height of the inclined plane = Inclined plane / Mechanical advantage of the plane

⇒ Height of the inclined plane = 10 m / 5 m

⇒ Height of the inclined plane = 2 m

Answer:

THE DIAGRAM ISNT LOADING HOW DO I HELP YOU

Explanation:

Answer:

No

Explanation:

We would not be able to see the star because its radiation is in the UV range. For the star to be visible, it has to be in the visible spectrum of light for me to be able to see it with my eyes.

Answer:

Electrical force, F = 10.8 N

Explanation:

We have,

Charge 1, [tex]q_1=3\ \mu C=3\times 10^{-6}\ C[/tex]

Charge 2, [tex]q_2=4\ \mu C=4\times 10^{-6}\ C[/tex]

Distance between charges is 10 cm or 0.1 m

It is required find the electric force between two charges. The formula used to find the electrical force is given by :

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

k is electrostatic constant

Plugging all the values we get :

[tex]F=\dfrac{9\times 10^{9}\times 3\times 10^{-6}\times 4\times 10^{-6}}{(0.1)^2}\\\\F=10.8\ N[/tex]

So, the electrical force between charges is 10.8 N.

Answer:

1 35°

2 20°

3 50°

..............

Answer:  A.

Single-celled organisms duplicate their genetic material twice during cell division

Explanation:

All multicellular organisms use cell division for growth and the maintenance and repair of cells and tissues. Single-celled organisms use cell division as their method of reproduction. Somatic cells contain two copies of each of their chromosomes (one copy from each parent).

Answer:

Cell division results in reproduction in single-celled organisms. The correct option is D.

Explanation:

Single celled organism which are equally known as unicellular organisms are organisms which are made up of one cell. Due to the simplicity of the structure of these organisms, reproduction can be achieved through cell division.

Multicellular organisms as the name implies is made up of multiple cells,unlike unicellular organisms, which are to varying degrees integrated and independent.

Every cell is produced through cell division.

Cell division results to reproduction in single-celled organisms while cell division aids in the formation of gametes, which are cells that combine with others to form sexually produced offspring. It is also responsible for the development of a multi-celled organism from a single fertilised egg cell.

Answer:

b

Explanation:

If someone showed you two spheres of the same size but with different masses, say 1g and 10kg, and asked which would hit the ground first after being dropped from the Leaning Tower of Pisa, what would you say? If you’re like most people, you would say the 10kg sphere would hit the ground first. Aristotle said so too, and for 1,000 years everyone believed him. But doing the experiment would show you, besides a great view of Pisa, that in fact, both spheres hit the ground at the same time.This is exactly what Galileo did, showing the world that objects of different masses fall at the same rate. (This is also a good example of why it is important to do experiments yourself and not to just take someone else’s word for it.) To start understanding why Galileo was right, we need to understand the difference between several physics words that are often jumbled together and confused: mass, weight, speed, velocity, acceleration, and force.

Answer:

The difference between a piece of ordinary iron and an iron magnet is. The magnetic domains in an iron nail that is brought near a strong magnet. When an ordinary iron nail is removed from a strong magnet

Explanation:

Answer:

A particle that has the same charge as lambda baryon is a neutron.

Explanation:

A lambda baryon is a subatomic particle that is made up of three quarks - uds (up, down and strange). It contains the same number of protons and neutrons, and an isotopic spin of 1. It is a family of hadrons just like mesons.

A quark is a fundamental or basic particle that make up a matter. It can combine with two or more to form composite particles (e.g neutron or proton). These basic particles are held by a very strong attractive force. The composite particles are the constituents of the nucleus of an atom.

The particle that has the same electric charge as the lambda baryon is neutron.

The lambda is known to be a baryon that  is composed of three quarks. They are:

The neutron is known to be a kind of subatomic particle that is often written as n or n⁰ . It is known to have a neutral charge and its composition is that of 1 up quark and 2 down quarks.

See full question below

The lambda baryon has the quark composition uds. Which particle has the same electric charge as the lambda baryon?

1. neutron

2 electron

3. proton

4 antimuon

Learn more about electric charge from

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Answer:

ocean waves and ripples from a stone being thrown in a pond.

Explanation:

Answer:

Answer:

from right

Explanation:

right

Answer:

Left

Explanation:

Finger Grasp Process thingy

Answer:

The maximum range is 300% of the range of the projectile is projected at an angle of 9.74°.

None of the options are correct.

Explanation:

Normally, ignoring air resistance, for projectile motion, the range (horizontal distance travelled) of the motion is given as

R = (u² sin 2θ)/g

where

u = initial velocity of the projectile

θ = angle above the horizontal at which the projectile was launched

g = acceleration due to gravity = 9.8 m/s²

The range is maximum when θ = 45°

R when θ = 45° is

R = (u² sin 90°)/g = (u²/g)

We are then told that this maximum range is 300% of the value obtainable for the range at a particular angle

Maximum range = 3R

(u²/g) = 3(u² sin 2θ)/g

Sin 2θ = (1/3)

2θ = sin⁻¹ (1/3) = 19.47°

θ = (19.47°/2) = 9.74°

Hope this Helps!!!

Answer:

F = 180 N

Explanation:

To find the required force you first calculate the angle of the ramp, by using the following relation:

[tex]sin\theta=\frac{2m}{5m}=0.4\\\\\theta=sin^{-1}(0.4)=23.57\°[/tex]

Next, you use the Newton second law to know what is the x component (in a rotated coordinate system) of the gravitational force:

[tex]F_x=mgsin\theta[/tex]

the required force must be, at least, the last force Fx. You know that the weight of the object is 490N = mg. Hence, you have:

[tex]F=F_x=(450N)sin(23.57\°)=180N[/tex]

the required force is 180N

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TRANSLATION:

Para encontrar la fuerza requerida, primero calcule el ángulo de la rampa, utilizando la siguiente relación:

Luego, usa la segunda ley de Newton para saber cuál es el componente x (en un sistema de coordenadas girado) de la fuerza gravitacional:

la fuerza requerida debe ser, al menos, la última fuerza Fx. Sabes que el peso del objeto es 490N = mg. Por lo tanto, tienes: