Can please tell what mistake I did??question number 10

Answer:

Deceleration is the opposite of acceleration.

The mathematical formula for deceleration is:

[tex]Deceleration = \frac{Final velocity - Initial velocity}{Time taken}[/tex]

Uniform deceleration of an object can be defined as  decreasing the velocity of an object in equal amount in an equal interval of time.

The graph attached below shows a constant decrease in the velocity with a uniform time interval.

Answer:

0.041 m

Explanation:

T = 2π√(L/g)

1 s = 2π√(L / (1.6 N/kg))

L = 0.041 m

Answer:

0.041

Explanation:

got right on test!

Answer:

D: X: Thermal energy is converted to light energy

Y: A cold spoon placed in hot liquid gets warmer

Explanation:

j took the quiz

The first and second laws of thermodynamics are used to describe the process of heat transfer.

The laws of thermodynamics are laws that show the transfer of heat energy there are three laws of thermodynamics that guide heat transfer.

From the statements of the first and second laws of thermodynamics, the statements that fit into the circles are;

X: Thermal energy is converted to light energy

Y: A cold spoon placed in hot liquid gets warmer

Learn more about the laws of thermodynamics:https://brainly.com/question/3808473

#SPJ6

Answer:

The mass of the planet is [tex]3.29\times 10^{23}\ kg[/tex].

Explanation:

Given that,

The gravitational pull on the planet is 620 N

Mass of a satellite is, m₁ = 450 kg

Radius of a planet is [tex]4\times 10^6\ m[/tex]

We need to find the mass of the planet. Gravitational force is given by :

[tex]F=\dfrac{Gm_1m_2}{r^2}[/tex][tex]m_2[/tex] is the mass of the planet

[tex]m_2=\dfrac{Fr^2}{Gm_1}\\\\m_2=\dfrac{620\times (4\times 10^6)^2}{6.7\times 10^{-11}\times 450}\\\\m_2=3.29\times 10^{23}\ kg[/tex]

So, the mass of the planet is [tex]3.29\times 10^{23}\ kg[/tex].

OPTIONS :

A.) the force that the ball exerts on the wall

B.) the frictional force between the wall and the ball

C.) the acceleration of the ball as it approaches the wall

D.) the normal force that the wall exerts on the ball

Answer: D.) the normal force that the wall exerts on the ball

Explanation: The normal force acting on an object can be explained as a force experienced by an object when it comes in contact with a flat surface. The normal force acts perpendicular to the surface of contact.

In the scenario described above, Erica's tennis ball experiences an opposite reaction after hitting the wall.This is in relation to Newton's 3rd law of motion, which states that, For every action, there is an equal and opposite reaction.

The reaction force in this case is the normal force exerted on the ball by the wall perpendicular to the surface of contact.

Answer:

was inspired by Clarke's 1951 short story "The Sentinel" and other short stories by Clarke. :)

Answer:

The top of the circle

Explanation:

At the top of the circle, there are two forces pulling the ball towards the center of the circle: weight and tension.

∑F = ma

mg + T = mv²/r

As v goes down, T also goes down, until it eventually reaches 0.

At the bottom of the circle, weight is pulling down, or away from the center of the circle.  Sum of the forces:

∑F = ma

T − mg = mv²/r

As v goes down, T also goes down.  However, even at v=0, T cannot be less than mg.

Answer:

coefficient

Explanation:

vocabulary

Answer:

Hey!

Your answer is definitely coefficient!

Explanation:

Hope this helps!

Answer:

C

Explanation:

Answer:

yea its c

Explanation:

Answer:

The heats radiation.

Explanation:

When placing your hand close to a fire or electric heater, you can feel the warmth of the object. Pull your hand away from it, it'll be cooler.

Answer:

The radiation of heat

Explanation:

Answer: Find the answer in the explanation.

Explanation:

I.) A piece of wire at room temperature.

The resistance of a piece of wire at room temperature is independent of both current and the voltage because it is an Ohmic component.

II.) Filament bulb

The filament wire in the filament bulb does not obey Ohms law.

For very small currents and voltage, the graph is roughly a straight line. At higher voltages, the line starts to curve.

III.) A diode is any component that allows electric current in only one direction. The resistance of a diode depends on the potential difference across it. Therefore, it does not obey Ohms law. It is a non-Ohmic component.

Find the attached files for the figures

Answer:

A, B and C

Explanation:

You are given the chemical equation.

The chemical reaction:

Zn (s) + HCl (9) → ZnCl2 (s) + H2

The elements involved are

Zinc, hydrogen and Chlorine.

That is, H, Cl and Zn

The Zinc is in solid form

While hydrochloric acid is in aqueous form.

The correct answers are A ,B and C

Answer:

39 m/s

Explanation:

speed = frequency x wavelength (All SI Unit)

speed = 100 Hz x 0.30 m = 30 m/s

Answer:

Normal force may be less than weight, if there is some force with a component that acts opposite to the weight force. ... If the pulling force is horizontal, on a horizontal surface, then the normal force is equal to the weight. This is something your chould be able to see from a free-body diagram

Explanation:

I THINK LINE [ D ] IS THE RIGHT ANSWER....

Explanation:

BECAUSE IN [ D ] THERE SHOWS MANY ANGLE AND THERE LIES BOTH POSITIVE VELOCITY AND POSITIVE ACCELERATION.......

HOPE IT HELP.......❣❣❣

Answer:

Line C

Explanation:

Start at point O and accelerates upwards in a positive slope.

Answer:

i think its no c.

a textbook written by a scientist. because its a first hand data.

An article written by a scientist is an example of a primary source. The correct option is option (B).

A primary source refers to an original, firsthand account or direct evidence of an event, topic, or research. It is created by individuals who directly participated in or witnessed the subject matter. An article written by a scientist would be considered a primary source as it typically presents the researcher's own observations, experiments, methodology, and conclusions.

It provides direct access to the original research and findings, making it an important source for scholarly and scientific purposes. In contrast, options A, C, and D are secondary sources that provide interpretations or summaries of information from primary sources.

Therefore, The correct option is an option (B).

To know more about the primary source:

https://brainly.com/question/24172115

#SPJ5

Answer:

10 km East

Displacement is the shortest path between two points.

Answer: A

Explanation:

From the figure given as attachments, the error pointing upward signifies the incident ray while the one point downwards signifies the reflected ray.

One of the laws of reflection is stated that the angle of incidence is equal to the angle of reflection.

Since the two arrows are parallel to each other, then the mirror must be perpendicular to the two arrows. That is, the incident ray and the reflected ray must be perpendicular to the mirror.

Option A is the correct answer.

Answer: answer is NOT A, ITS B!

Explanation:

ik

Answer:

g = 4.7 × [tex]10^{-16}[/tex] m/[tex]s^{2}[/tex]

Explanation:

Given that the mass of the satellite = 700 kg, and 10,000 m above the earth;s surface.

From Newton's second law,

 F = mg ............... 1

From Newton's gravitation law,

F = [tex]\frac{GMm}{r^{2} }[/tex] .................. 2

Where: F is the force, G is the gravitational constant, M is the mass of the first body, m is the mass of the second body, g is the gravitational force and r is the distance between the centers of the two bodies.

Equate 1 and 2 to have,

mg = [tex]\frac{GMm}{r^{2} }[/tex]

⇒   g = [tex]\frac{GM}{r^{2} }[/tex]

But; G =  6.67 × [tex]10^{-11}[/tex] N [tex]m^{2} Kg^{-2}[/tex], M = 700 Kg, r = 10000 m

Thus,

g = [tex]\frac{6.67*10^{-11*700} }{10000^{2} }[/tex]

  = [tex]\frac{4.669*10^{-8} }{1*10^{8} }[/tex]

  = 4.669 × [tex]10^{-16}[/tex] m/[tex]s^{2}[/tex]

The force of gravity on the satellite is 4.7 × [tex]10^{-16}[/tex] m/[tex]s^{2}[/tex].

Answer:

Explanation:

I would have been an anti-federalist. They favored a weak central government because they related it to the British tyranny. Federalists believed in a strong central government, almost controlling. I would not have respected this type of government.

Answer:

Option D.

A fan is turned from high speed to low speed.

Explanation:

It is important to note that air is also a fluid.

In a system, static pressure of air increases with the speed of rotation of the fan. This is because when the speed of the fan is increased, the force with which it is pushing the air molecules is increased. Since pressure is a relationship between force and area, the pressure of the air molecules will be increased.

Conversely, when the speed of the fan is reduced, the priming force on the air molecules will be reduced, hence the pressure of the air will drop.

This makes option D the correct option

Answer:

A

Explanation

Becasue the water level is decreasing

Answer:

Strong nuclear force

Explanation:

The particles in the atom's nucleus bond together because there is a strong nuclear force between the protons and neutrons that attracts them to each other and binds together the nucleus.

Answer:

Count

Explanation:

The count will show you how many students are apart of the business department

Answer:

v = 4.67 m

Explanation:

It is given that,

Height of the object is 24.8 cm

Height of the formed image is -3.09 cm

Object distance is 37.5 cm, it is negative always

We need to find the image distance. Let v is the image distance. Magnification of an object is given by the formula as follows :

[tex]\dfrac{h'}{h}=\dfrac{v}{u}\\\\v=\dfrac{uh'}{h}\\\\v=\dfrac{-37.5\times (-3.09)}{24.8}\\\\v=4.67\ m[/tex]

So, the image is formed at a distance of 4.67 m.

Answer:

Atomic masses do not include masses of neutrons

Atomic masses do not include masses of electrons is the statement that is true about atomic mass.

It is the sum of the mass of all the protons as well as the neutrons that are present inside the nucleus. It is used to consider the total mass of the atom because electrons have a very negligible mass as compared to protons and neutrons.

Atomic mass = total number of protons present in the nucleus + total number of neutrons present in the nucleus of an atom

While the atomic number represents only the number of the protons present in the nucleus, for example, the atomic number of the carbon atom is six

For example, the atomic mass of the carbon atom is 12 because a single carbon atom has 6 protons as well as 6 neutrons.

Atomic masses do not include masses of electrons is the true statement about atomic mass.

Learn more about atomic mass from here

https://brainly.com/question/11681718

#SPJ2

Answer:

The average power the woman exerts is 0.5 kW

Explanation:

We note that power, P = The rate at which work is done = Work/Time

Work = Energy

The total work done is the potential energy gained which is the energy due to vertical displacement

Given that the vertical displacement = 5.0 m, we have

Total work done = Potential energy gained = Mass, m × Acceleration due to gravity, g × Vertical height, h

m = 51 kg

g = Constant = 9.81 m/s²

h = 5.0 m

Also, time, t = 5.0 s

Total work done = 51 kg × 9.81 m/s²× 5 m = 2501.55 kg·m²/s² = 2501.55 J

P = 2501.55 J/(5 s) = 500.31 J/s = 500.31 W ≈ 500 W = 0.5 kW.