Need quick response

Are my answers for 1-8 correct and if not what is the correct answer for the ones that are wrong and why?
Also need answers for 9 and 10 since I’m not sure what the answers are and I want an explanation for both of those.

Answer:

90N

Explanation:

The total resultant force acting on the desk being pushed by Sara and Carlo is 90N

A resultant force is a singular force that will act the same effect as the forces acting on a body.

So;

  Resultant force = Force applied by Sara + Force applied by Carlo

  Resultant force  = 50N + 40N  = 90N

Answer:

Explanation:

Hi! It would be A. Plane mirrors produce only virtual images,and concave mirrors produce real and virtual images.

Plane mirrors construct only virtual images, and concave mirrors make real and virtual images. Thus, this statement best corresponds concave and plane mirrors.

A virtual image exists represented as the opposite of a real image, thus an image that cannot be obtained on a screen stands produced as a virtual image. The motivation for this exists in the fact that the beams of light that form a virtual image never connect therefore a virtual picture can never be projected onto a screen. Examples: Image formed in a plane mirror, an image constructed on the front and back surfaces of a spoon, etc.

Therefore, the (A) option exists as the accurate answer.

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The one who waits for a shorter time wins. Neha leaves her pendulum from point L and Suhani leaves her pendulum from point P.Neha wins as her bob comes back faster. Therefore, option A is correct.

A weight suspended from a pivot such that it can freely swing is called a pendulum. Gravity's restoring force will cause a pendulum to accelerate back toward its equilibrium position if it is sideways moved from its resting, equilibrium position.

An object that is suspended from a fixed location by a string or rod and can move freely due to gravity and momentum. frequently used to control electronics like clocks. Simple pendulum: A back-and-forth swinging pendulum. A circularly swinging pendulum is referred to as a spherical pendulum.

The force of gravity acting on the swing causes it to move freely back and forth after being raised and released. The swing keeps returning.

Thus, option A is correct.

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Answer:

A circuit breaker is a switching mechanism that interrupts the current that is irregular or fault. It is a mechanical system that interferes with high magnitude (fault) current flow and also performs a transfer operation. Hope this helps :)

Explanation:

Answer:

A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by an overcurrent or short circuit.

Explanation:

Its basic function is to interrupt current flow after protective relays detect a fault.

Answer:

kinetic energy

Explanation:

Answer:

The Moon actually takes 27.3 days to complete a single orbit around the earth. The Moon takes 29.5 days to complete one phase cycle.

Hope it helps!

Answer:

338.7cm

Explanation:

The can of corn would be in the shape of a cylinder. Since we are looking at capacity, we will want to find the volume.

V=abase×h

V=πr2×h

V=π(d2)2×h

V=π(6.62)2×9.9

V=338.7cm3

Hopefully this helps!

Answer:

338.7 cm³

Explanation:

For this question you use the volume formula of a cylinder πr²h.

Radius is 1/2 the diameter.

Simply input the variables into the formula.

π(3.3)²×9.9 = 107.811π or approximately 338.7 cm³

Answer:

Explanation:

potato :D

Answer:

It's Compleatly False

Explanation:

It would violate the first law of thermodynamics which states that energy cannot be created or destroyed, and these laws are not optional. Furthermore, A perpetual motion machine would have to produce work without energy input. The Second Law of Thermodynamics states that that an isolated system will move toward a state of disorder.

Answer:

Newton's law of gravitation states that every object in this universe attracts every other object with a force called gravity,

when the distance between the two object is increased the gravitational force decreases by its square,

and when the mass an object increases the gravitational force also increases,

therefore, gravitational force is directly proportional to the mass of the two objects and is square inversely proportional to distance between them.

Hope it helped u,

pls mark as the brainliest and put thanks

^_^

Since the plastic is not very thick, light rays can penetrate through when I hold my largest cardboard square between the light source and the wall. As a result, the cardboard tends to cast a shadow.

Based on the precise materials and light sources that were employed, the results of the cardboard experiment frequently differ.

Keep in mind that it is generally expected that reflective materials, such aluminum foil and mirrors, would reflect the specified or given light.

Since the plastic is not very thick, light rays do penetrate when I hold my largest cardboard square between the light source and the wall. As a result, the cardboard tends to cast a shadow when held in this position.

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Answer:

Explanation:

How much force is required to accelerate an 8kg mass at 5m/s^2 if there is 14N of friction.

Answer:

54 N

Explanation:

By Newton's second law the force acting on an object is related to its mass and acceleration

F = m x a where
where m = mass of the object and a is the acceleration

Here m = 8 kg and a = 5m/s² so

F = 8 x 5 =40 Newtons (measure of force)

But there is an opposite force due to friction of 14 Newtons

So net force required to overcome this friction and accelerate the object of mass 8kg to 5m/s² = 40 + 14 = 54 Newtons

Answer:

A. Argon

Explanation:

It is a noble gas, a group which is not reactive.

The rocket slows its speed again a little when the distance from the earth stops decreasing.

While the rocket is in a roughly circular orbit near the surface of the earth and is moving at around 5 miles per second.  To decrease it to a new circular orbit, slightly near  to the surface. The rocket reverse and shoots its main rocket engine in a short burst to decrease  its speed to 4. 96 miles per second. The response of the rocket is  based on escape velocity which is referred to as the minimum speed required to reach an infinite distance for a free object to escape from the gravitational influence of an immediate body.

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The color filter that a person need to choose is option  (a) blue.

The reduction of   the wavelength of the light is one that tends to make the aperture to be bigger if it is said to be relative to the light wavelength, by rising  the resolving power. So, one need to  choose a blue filter.

The Blue light filter is one that can act by  lowering  the amount of blue light that is shown  on the screen of telescope device.

note that the blue light can tends to  suppress the creation of melatonin thus making it to  be filtering it out.

Therefore, based on the above, The color filter that a person need to choose is option  (a) blue.

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Answer:

the water spins the wheel wiche gives energy.

Explanation:

The approximate magnitude of the electric field at <0,2,0>m is 0.

Size alludes to the reviewing of the splendor of stars, the first being the most splendid. It has been moved to different issues since essentially the seventeenth hundred years. A size is the estimation or outright worth of an amount. A size is addressed by a positive genuine number. In Physics, greatness is characterized as the most extreme degree of size and the course of an article. Greatness is utilized as a typical calculate vector and scalar amounts. By definition, we realize that scalar amounts are those amounts that have size as it were.

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Answer:

meters per second squared

m/s^2

Explanation:

Hope this helps!     :3

plz mark as brainliest!

Answer:

Acceleration is measured in m/s2 (meters per second squared)

Explanation:

Answer:

C.

Explanation:

Answer:

C

Explanation:

The earths rotation on its axis

The average acceleration of the car moving linearly is 6 m/s².

Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity.

a = Δv/Δt

where;

The average acceleration of the car moving linearly is calculated as follows;

a = 30 m/s / 5 s

a = 6 m/s²

Thus, the average acceleration of the car moving linearly is 6 m/s².

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Answer:

false

Explanation:

Answer:

F = 1250000 N

Explanation:

If you have 50,000 S, by 25 M. It would be calculated to 1,250,000 N.

The travel time is required for the landing craft to reach the Earth as measured by the aliens on the mother ship is 4.5*10^6m/s.

To find the answer, we have to know about the Lorentz transformation.

It is given that, an alien spaceship traveling at 0.600 c toward the Earth, in the same direction the landing craft travels with a speed of 0.800 c relative to the mother ship. We have to find the time travel for the landing craft to reach the Earth as measured by the aliens on the mother ship.

                        [tex]t=\frac{d}{v}[/tex]

where; d is 0.2 light years, and the value of v will be 0.8c+0.6c

          [tex]t=\frac{0.2ly}{0.8c+06c} =\frac{0.2*9.46*10^{15}m}{1.4*3*10^8s} =4.5*10^6m/s[/tex]

Thus, we can conclude that, the travel time is required for the landing craft to reach the Earth as measured by the aliens on the mother ship is 4.5*10^6m/s.

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Answer:

Black Flies, leeches and aquatic worms.

Explanation:

Black Flies, leeches and aquatic worms are the organisms that are tolerant to pollution and has the ability to survive in the polluted environment occur due to man-made waste. these organisms sometimes takes food from these pollutants and help in surviving these organisms. Without these tolerant organisms, those organisms which are not sensitive to these pollutants will die and removed from that polluted environment.

Answer:b

Explanation:

b

The acceleration of each ball while in motion is the acceleration due to gravity, that is 9.81 m/s²

Here one child simply drops a ball. The second child simultaneously launches a ball downward at a 10-meter-per-second initial speed.

In first case acceleration on the ball is the acceleration due to gravity, it should be noted that in the second case also acceleration on the ball is the acceleration due to gravity,

Therefore, only gravitational force is acting on both cases so their acceleration is the acceleration due to gravity. Therefore, the acceleration of each ball while in motion is the acceleration due to gravity, that is 9.81 m/s².

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Answer:

D and C

Explanation:

C. The bulbs will stay on when one bulb breaks or burns out.

D. You will always know when there is a break in the circuit.

BENEFITS of a SERIES circuit:

Therefore, option C and D are correct.

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Answer:

it holds the bone and helps to move

I don't know if this is right