An objects weight w is equal to the product of its mass and the acceleration due
to gravity. On Earth, this value is g = 9.8 m/s^2. If something weighs 400 N,
what is its mass?

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The average speed of the ant is 0.276 cm/s and the average velocity is 0.136 cm/s.

The correct answer is option D.

In the given graph, we can deduce the following;

The average speed of the ant is calculated as;

[tex]average \ speed = \frac{total \ distance }{total \ time }[/tex]

The total distance from the graph is calculated as follows;

The total distance = (6 + 2 + 2 + 7 + 7 + 3 + 2) cm = 29 cm

[tex]average \ speed = \frac{total \ distance }{total \ time } = \frac{29 \ cm}{105 \ s} = 0.276 \ cm/s[/tex]

The average velocity is calculated as the change in displacement per change in time.

The displacement is the shortest distance between the start and end positions.

Notice, you have a right triangle, now calculate the length of  line P.

                                                ↓end

                                                ↓

                                                ↓ 6cm

                                                ↓

  start -------------13 cm------------

Use Pythagoras theorem to solve for P.

[tex]P^2 = 6^2 + 13^2\\\\P^2 = 36 + 169\\\\P^2 = 205\\\\P= \sqrt{205} \\\\P = 14.318 \ cm[/tex]

The average velocity of the ant is calculated as;

[tex]average \ velocity= \frac{\Delta displacemnt }{total\ time }= \frac{14.318 \ cm}{105 \ s} = 0.136 \ cm/s \\\\[/tex]

Thus, the average speed of the ant is 0.276 cm/s and the average velocity is 0.136 cm/s.

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Answer:

1.because of gravitational force.

2.By rubbing hands.

Explanation:

3.When the string breaks the stone no longer rotates around its center of rotation, but won't suddenly move directly away from it, and will instead continue to follow its path of inertia. That is, it will continue to move in the direction in which it was moving at the moment the string broke.

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Explanation:

Given:

[tex]v_0 = 28.0\:\text{ft/s}[/tex]

[tex]v = 50.0\:\text{ft/s}[/tex]

[tex]t = 7.40\:\text{s}[/tex]

First, we calculate the acceleration of the car during this time:

[tex]v = v_0 + at \Rightarrow a = \dfrac{v - v_0}{t}[/tex]

Plugging in the given values, we get

[tex]a = \dfrac{50.0\:\text{ft/s} - 28.0\:\text{ft/s}}{7.40\:\text{s}} = 2.97\:\text{ft/s}^2[/tex]

Now that we have the value for the acceleration, we can solve for the distance traveled during the time t:

[tex]x = v_0t + \frac{1}{2}at^2[/tex]

[tex]\:\:\:\:=(28.0\:\text{ft/s})(7.40\:\text{s})[/tex]

[tex]\:\:\:\:\:\:\:\:\:\:\:\:+ \frac{1}{2}(2.97\:\text{ft/s}^2)(7.40\:\text{s})^2[/tex]

[tex]\:\:\:\:= 289\:\text{ft}[/tex]

Answer:

a

Explanation:

The bar magnet moves downward with respect to the wire loop, so that the number of magnetic field lines going through the loop decreases with time. This causes an emf to be induced in the loop, creating an electric current.

in other words, the magnets motion creates a current in the loop

Answer:

A?

Explanation:

Answer:

v = 60 m/s

final velocity after 20 seconds depends on how long it continues to accelerate after 20 seconds. Also we do not know the direction to complete the velocity requirements of a scalar value and direction component.

Explanation:

If we assume that the acceleration is constant

d = ½at² = ½(Δv/t)t² = ½Δvt = ½(v - 0)t = ½vt

v = 2d/t

v = 2(600)/20 = 60m/s

Explanation:

Formula for momentum

P=mv

= 10 x 5

= 50kg m/s

Answer:

50Kg m/s

Explanation:

the equation for momentum is mass x velosity

Kinematics deals with the motion and time

It is concerned with motion

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]

Explanation:

what is this language? ..............

it is the short method of calculating economics

Answer:

Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics. ...

Explanation:

Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.

Answer:

The Answer is C. the student changed too many variables.

Explanation:

For the quiz in K12

Panthera is a genus within the family Felidae that was named and described by Lorenz Oken in 1816 who placed all the spotted cats in this group.

Answer: It’s False hope this helps

Explanation:

The answer is False, the Universal Gas Law" is considered law in Physics.

The universal gas law is considered law in physics and it states that the product of the Pressure and Volume of a given mass of gas is equivalent to the product of the number of moles, Boltzmann constant, and the temperature.

It is also known as the Ideal gas equation and is expressed mathematically as:

PV = nRT where:

P is the pressure

V is the volume

n is the number of moles

R is the Boltzmann constant

T is the absolute temperature.

Hence from the above definition, we can see that Universal Gas Law" is also considered a law in physics. The answer is False

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Answer:

In terms of distance, average speed is 20 km/h

In terms of displacement, average speed is 0 km/h.

Explanation:

Total distance:

[tex] = (40.0 - 10.0) + (20.0 - 10.0) + (40.0 - 20.0) \\ = 30.0 + 10.0 + 20.0 \\ = 60.0 \: km[/tex]

Total time is 3.0 hours

but:

[tex]average \: speed = \frac{total \: distance}{total \: time} \\ [/tex]

In terms of distance.

substitute:

[tex]average \: speed = \frac{60.0}{3.0} \\ \\ = 20 \: {kmh}^{ - 1} [/tex]

[tex]displacement = ( - 30.0) + 10 .0+ 20.0 \\ = 0[/tex]

In terms of displacement:

[tex]speed = \frac{0}{3} \\ \\ = 0 \: {kmh}^{ - 1} [/tex]

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Answer:

false

Explanation:

Answer:

It's False

Explanation:

For Example, Suppose, we have two wires of equal length and the same cross sectional, one made up of nichrome and the other made up of copper metal. Then, nichrome wire will have more resistance than the copper wire.

First copper is an element and nichrome is an alloy primarily of nickel, chromium and iron. So that's the first clue noting that the three elements that make up this alloy have a smaller conductivity than copper.

But there's more to the reason for higher resistance. The manner in which the three elements make up the nichrome alloy results in grain boundaries, dislocations and voids that interrupt the crystal lattice of the alloy which for pure copper is much more uniform. These differences of the crystal lattices either allow smooth flow of electrons as in copper or scattering as in nichrome. Scattering is the dominant effect that leads to the higher resistance, combined with the basic differences in constituent conductivities.

I Hope This Helps.

Answer:

The expression for the time taken by an object to move with a speed at some distance is,

t= d/v

Here, t is the time taken by the opponent to react, d is the length of the court, andis the speed of the ball.

Explanation:

hope u like it :)

Answer:

P=4.2V    E=1512J

Explanation:

P=?

P=VI

Putting the values

P=2*0.6

E=?

E=P*t

E=4.2*6*60

For centuries, physicists thought there was no limit to how fast an object could travel. ... Only massless particles, including photons, which make up light, can travel at that speed. It's impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so.

hope it is helpful to you ❤️

Answer:

Thermal and kinetic.

Explanation:

Thermal energy is the energy generated by heat. Kinetic energy is the movement of particles in a substance which is responsible for the heat increase.

Answer:Thermal and kinetic.

Explanation:

Option C,

The goal of a theory is to explain natural and physical phenomena.

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(Answered by Benjemin)

Answer:

85 ft / 15 ft/s = 5.666666... = 5.7 s

Explanation:

Answer:

0.1 mm

Explanation:

Given data :  A stack of paper contains 500 sheets of paper.

The stack has dimensions of 0.297 m x 21.0 cm x

50.0 mm.

To Find : What is the thickness of one sheet of paper

So,

1 m = 1000 mm

1 m = 100 cm

1 cm =  10 mm

The stack has dimensions of 0.297 m x 21.0 cm x 50.0 mm.

0.297 m = 297 mm

21 cm = 210 m

297 mm * 210 mm are paper length width

Hence 50 mm is thickness of 500 sheets

-  thickness of one sheet of paper = 50/500  = 1/10 mm

= 0.1 mm

Hope It Helps :)

The thickness of one sheet of paper would be 62.37 ×10⁻⁶ meters.

The volume of the stack of paper in cm³ would be  0.031185 mm³.

Finding the product of two or more numbers in mathematics is done by multiplying the numbers. It is one of the fundamental operations in mathematics that we perform on a daily basis.

As given in the problem a stack of paper contains 500 sheets of paper. The stack has dimensions of 0.297 m x 21.0 cm x 50.0 mm.

The volume of the stack  =  0.297 m x 21.0 cm x 50.0 mm

                                          = 0.000297 mm×2.1 mm x 50.0 mm

the thickness of one sheet of paper = 0.000297 mm×2.1 mm x 50.0/500mm

                                                           =62.37 ×10⁻⁶ meters

The volume of the stack of paper = 31.185 cm³

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Answer:

Does not stick to glass, expands uniformly when heated

Explanation:

If u want some more

Good conductor of heat

Low freezing point : - 39°C

High boiling point : 357°C

Have a good day, hope I helped

Answer: 482.8032 km per hr

Explanation: 300 * 1.609344 =

Answer:

the speed after 2 seconds = 20m/s

Explanation:

I took g as -10m/s² because the ball was moving against gravity

using V = u + gt

V = 40 - 10 X 2

V = 40 - 20

V = 20m/s

The velocity after 2 seconds later will be 20.38 m/s.

Velocity is the rate of distance covered per time. Velocity could be average or instantaneous.

Average velocity can be given as;

Average velocity = total distance / total time taken

Velocity has a huge amount of application in science and technology.

Units of velocity are given by ⇒ meter/second

The kinetic energy of an object is caused due to velocity only.

For example, if a car drives 50 meters for 10 seconds and it is constant then 50/10 = 5 meters/second will be the velocity.

Given that,

Initial velocity u = 40 m/s

Time period t = 2 seconds

By newtons first equation of motion

v = u - gt ( since acceleration is upward)

v = 40 - 9.81 × 2

v = 40 - 19.62

v = 20.38 m/s

Hence "The velocity after 2 seconds later will be 20.38 m/s".

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