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By dividing the moments around the y-axis and around the x-axis,

respectively, by the total mass, the x- and y-coordinates of the centre of

mass may be determined.

formula's:

Answer:

108 N

Explanation:

F = ma

F = (90kg)(1.2m/s^2)

F = 108 N

Answer:

Class 1 Levers: Moving the fulcrum closer to the load will increase the mechanical advantage. Moving the effort farther from the fulcrum will increase the mechanical advantage.

Explanation:

Hope it helps you

Answer:

23 electrons

Explanation:

i just know because im a god

Answer:

the car

Explanation:

Thrust acceleration is the  application of  great pressure to the accelerator to increase speed.

Thrust acceleration

Generally,greater pressure is applied to the accelerator it is obvious that the driver of the system is making an attempt to increase speed of the system for a specific time frame

Therefore, when greater pressure is applied to the accelerator to increase speed it is refereed to as thrust acceleration.

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Answer:

distance of object from mirror=distance of image from mirror

so distance between object and image=distance of object from mirror+distance of image from mirror

=2 x distance of object from mirror

=2 x (3+0.4)m

=2 x (3.4)m

=6.8 m

Explanation:

hope this helps :)

From the given graph of position v/s time, the velocity can be determined by calculating the slope of the linear curve. The slope of the line is  4 m/s.

Velocity of an object is the measure of the distance it travelled per unit time. Velocity is a vector quantity having magnitude and direction. It has the common unit of m/s.

Velocity is the ratio of change in distance to the change in time. Hence, let Δx be the distance and Δt be the time change.Then velocity is :

v =  Δx / Δt .

In the given graph the distance covered within 2 seconds is 8 m. Then the velocity is :

v = 8/2 = 4 m/s.

It is the slope of the linear curve in the graph. Therefore, the velocity of the object is 4 m/s.

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Answer:

From the given graph of position v/s time, the velocity can be determined by calculating the slope of the linear curve. The slope of the line is  4 m/s.

Explanation:

it is right

Answer:

360 degrees is one full rotation starting at zero

it take 2 s  to the flag to rotate once in a full circle  with 3 rad/s of angular velocity.

Angular velocity is "rate of change of angular displacement with respect to time". i.e. ω= dθ/dt. it is also defined as angular displacement over time. i.e. ω = angular displacement/Time.

Angular velocity shows how much angle can be covered in unit time. It's SI unit rad/s.

Angular acceleration is rate of change of Angular velocity with respect to time.

i.e. α = dω/dt if an object changes its angular velocity in short time, we can say that it has greater angular acceleration. It is expressed in rad/s².

In this problem we have to calculate time, but the angular velocity id not given.

Consider the angular velocity is 3 rad/s.

Given,

Angular displacement θ = 2π

angular velocity ω = 3 rad/s

Time t = ?

Time = θ/ω

Time = 2π/3 rad/s = 2 s

Hence the answer is 2s.

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Answer:

Momentum = m x v

225 = 45 x v

÷45

5 = v

Velocity is 5m/s

Answer is A

Hope this helps!

Answer:

i think b sorry if im wrong!

Explanation:

To Find: Diameter of soap bubble =? Solution: By Laplace's law of spherical membrane for a bubble. (Pi– Po) = 4T / r.

Answer:

B. glasses, prism, and passing through water

Explanation:

*Note:- When light is bounced back it is called reflection.

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Which group of objects refract light energy?

Answer:

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. In a magnetic field, a moving charge experiences a force that is perpendicular to both its own velocity and the magnetic field. The magnetic field of a permanent magnet attracts or repels other magnets, as well as ferromagnetic elements like iron. Furthermore, a varying magnetic field exerts a force on a variety of non-magnetic materials by changing the mobility of their outer atomic electrons.

Explanation:

:) hope this helps

Answer:

D

Explanation:

the energy increased so the amplitude got taller and the wave length got shorter.

Answer:

5km

Explanation:

Just helping

If 50km divided by 10hrs =5

Sorry if I'm wrong but that's what I got

Answer:

-(F1+F2)y

Explanation:

add up F1 and F2 using x-y components

Since the three forces balance,

F3y = -(F1+F2)y

Answer: 10.29

Explanation:

F1: 6.25cos(180°) = -6.25

F2: 8.90cos(243°) = -4.04

F3: -6.25 + (-4.04) = 10.29

Elastic force is the type of force which the catapult applies to the stone.

This is a launching device which is composed of rubber and used in the study of projectile motion.

The type of force present in a rubber is elastic force which is applied as a result of pressure on it when the individual launches the stone towards the required target.

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The catapult applies elastic force to the stone which is converted to kinetic energy of the flying stone.

Elastic potential energy is the type of energy that is stored in an elastic material.

The catapult is an elastic material that converts elastic energy into kinetic energy of flying stone.

Thus, the catapult applies elastic force to the stone which is converted to kinetic energy of the flying stone.

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Answer:

Answer:

This week in class, we’re reading "The Water of Life" by Howard Pyle.

In Howard Pyle’s “The Water of Life”, a king abuses his power by asking a faithful servant to complete difficult tasks for him, hoping to win the love of a princess.

As we read, we will be discussing the themes of Morality, Power & Greed, and Resilience & Success as they relate to the text. We are trying to answer these big questions :

"What is good and how do we know?", "Why do people succeed?", and "How does power corrupt?"

Explanation:

Answer:

Explanation:

It is not exactly a physics question...

The story "The Water Of Life" is about a king and his faithful servant.

The servant worn an armlet on his arm.

The following words were written on the armlet: Who thinks to wear me on an arm, must lack both guile and thought of harm."

That writing further develops the story as it reflects on the king's sending his servant to help a princess who was upset after her bird died.  The story's theme is about power, greed and resilience.

Answer:

4 kg m/s

Explanation:

When finding momentum after a collision, you can just add the momentums together, this would be 10 kgm/s -6 kgm/s to get 4 kgm/s

The total momentum of the carts after the collision is 4 kgm/s.

The momentum of an object is the product of mass and velocity of the object.

P = mv

The total momentum of the carts is calculated as follows;

P = P₁ + P₂

P = -6 + 10

P = 4 kgm/s

Thus, the total momentum of the carts after the collision is 4 kgm/s.

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Answer:

The two most common advantages of the ring system are as follows:

- Voltage drop across the circuit is less or negligible when compared with the tree system.

- More appliances can be connected across the circuits as the supply is radially distributed across the space

We have that the  advantages of ring system wiring is given as

Question Parameters:

Generally, A ring system wiring is  wiring method where we see the sockets and distribution outlets to be connected in a ring-like manner.

We have that its advantage are

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Given what we know, despite not having the figure attached to the question, we can still confirm that the magnitude for the acceleration of the dancer will be zero.

This has to do with how the question clarifies the speed of the dancer. Though it does not give us an exact value, we are told that the speed is constant. This is an indicator that the acceleration is zero because with any other value for acceleration the speed cannot remain constant.

Therefore, given that any value for acceleration will increase or decrease the speed of the dancer, but we are told that the dancer's speed is constant throughout the trip, we can confirm that the magnitude for the acceleration of the dancer is zero.

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Explanation:

Hi there!

Mass of the container (m) = 15000 kg

Also from the figure;

Volume of the container (V) = l*b*h

{ From figure length = 2m , breadth = 1.1m, height = 2.5m}

So,

V = (2*1.1*2.5) m³

= 5.5m³

Then;

Density (d) = m/v

= 15000/5.5

= 2727.27 kgm³

Therefore, the density is 2727.27 kgm³.

Hope it helps!

Answer:

In 250 BC, Eratosthenes measured the circumference to be about 24,500 miles:

by this method, 12 deg = 12 / 360 = 1/30 of the planet's surface\

30 * 500 km = 15,000 km in circumference, about 9,200 miles

Answer:

sulphite is what equation

Explanation:

gas

liquid

solid

aqueous

Answer:

Approximately [tex]5.76 \times 10^{-18}\; {\rm J}[/tex] (by the external force that moved the electron.)

Explanation:

Let [tex]q[/tex] denote the magnitude of a charge in an electric field of magnitude [tex]E[/tex]. The magnitude of the electrostatic force on that charge would be:

[tex]F = q\, E[/tex].

In the electric field in this question, the magnitude of the electric force on the electron would be:

[tex]\begin{aligned}F &= q\, E \\ &= 1.6 \times 10^{-19}\; {\rm C} \times 600\; {\rm N \cdot C^{-1}} \\ &= 9.6 \times 10^{-17} \; {\rm N}\end{aligned}[/tex].

Moving the electron to the other plate would thus require an external force of [tex]9.6 \times 10^{-17}\; {\rm N}[/tex].

This force needs to be exerted over a distance of [tex]6.0\; {\rm cm}[/tex] ([tex]6.0 \times 10^{-2}\; {\rm m}[/tex].) The direction of the motion is the same direction as that of the external force. Thus, the work that needs to be done would be:

[tex]\begin{aligned}W &= F\, s \\ &\approx 9.6 \times 10^{-17}\; {\rm N} \times 6.0 \times 10^{-2}\; {\rm m} \\ &\approx 5.76 \times 10^{-18}\; {\rm J}\end{aligned}[/tex].