help meeee pleaseeee​

Answer:

The answer is 9.8 N

Explanation:

As we know that the weight of an object is the amount of gravitational force acting on the object in an upward direction if the weight is acting is the downward direction.

The formula of weight:

W = Mass x Gravitational force

W = m x g

Given data:

Mass =1 kg

g = 9.8 ms-2

W = 1kg x 9.8 ms-2 = 9.8 kgms-2 ( 1 kgms-2 = N)

SO,  

W = 9.8 N

The toy has an earth weight of 9.8 N.

Answer:

= -20°C

Explanation:

The specific heat capacity of ice using the cgs system is 0.5cal/g°C

The enthalpy change is calculated as follows

ΔH=MC∅ where M represents mass C represents specific heat and ∅ represents the temperature change.

10cal = 2g×0.5cal/g°C×∅

∅=10cal/(2g×0.5cal/g°C)

∅=10°C

Final temperature= -30°C+ 10°C= -20°C

Answer:

-20 C

Explanation:

Answer:

Energy can change form, but the total amount of energy stays the same.

Explanation:

Energy transformation diagrams shows the different forms of energy which are converted into different forms.

As we know by an example of potential energy to kinetic energy conservation when a block is compressed against the spring then initially total energy is in the form of elastic potential energy of the spring.

When block is released then total potential energy of the block is converted into the kinetic energy of the block.

So here we know that in energy transfer diagram shows the transformation of energy while total energy will always remains conserved.

so here correct answer would be

Energy can change form, but the total amount of energy stays the same.

Answer:

a

Explanation:

Energy can change form, but the total amount of energy stays the same.

One dimensional motion is represented by movement along a straight line. The best choice from the options provided is 'two vectors that lie along the same line', as the vectors portray both magnitude and direction of the motion.

In context of physics, one dimensional motion is represented by movement along a straight line in one direction. The best representation of one dimensional motion from your options is 'a) two vectors that lie along the same line'. In this case, vectors represent both magnitude (amount of motion) and direction (in which way the motion is). If two vectors are lying along the same line, it indicates that the motion is taking place along one dimension (line), either in the same direction or in the opposite direction.

https://brainly.com/question/21140538

#SPJ12

Answer:

B.It will be stiffer than the other. - I JUST DID THE QUIZ ON PLATO AND IT WAS CORRECT.

Explanation:

Answer:

number 2

Explanation:

Answer:

The correct answer is actually D) They rotate quickly and are large and gaseous.

Think about the features of the outer planets.

I got this question wrong because of the previous user that answered this.

here is proof that my answer is correct:

Answer:

To determine how efficient that system is.

Answer:

Because it gives a direct relation that can be used to obtain the efficiency E = Input/output which tell us how the system works, for example, if the efficiency is bigger than one, this means that the system amplifies the input (the output is bigger than the input) while if the efficiency is less than one, the output is smaller than the input.

Where these quantities can be forces, heat, electricity, or anything.

Answer:C

Explanation:

The specific heat capacity of the substance

In the equation Q=mcΔT, Q represents the specific heat of the substance being heated.

                                          Q = mcΔT

Where,

Q = capacity in Joules

m = mass in grams

c = specific heat of an object in J/g °C

ΔT = change in the temperature in °C

So, Option C is the answer.

To learn more about the heat capacity formula, refer to: https://brainly.com/question/21843266

#SPJ2

Answer: Yes

Explanation:  To answer this, consider the natural processes that can cause a tree to fall, such as decay, disease, or adverse weather conditions. Trees can fall due to natural factors like rotting of the roots or trunk, strong winds, or heavy snow. Therefore, it is possible for a tree to fall down without any external force acting on it.

Answer:

B

Explanation:

The boat's velocity relative to the earth = the boat's velocity relative to the river + the river's velocity relative to the earth

v = 18 m/s + 2.5 m/s

v = 20.5 m/s

Answer:The kinetic energy will decrease.

Explanation:As potential energy increases kinetic energy will increase, as kinetic or potential energy decreases, the kinetic or potential energy will decrease

Answer:

34.5 m

Explanation:

According to the law of conservation of energy, the mechanical energy of the person at the top of the hill must be equal to the mechanical energy at the bottom. However:

- the mechanical energy at the top is just gravitational potential energy, since the person is at rest, so the kinetic energy is zero

- the mechanical energy at the bottom is just kinetic energy, since the height of the person has becomes zero

So, the initial gravitational potential energy of the person must be equal to the final kinetic energy of the person:

[tex]U=K[/tex]

[tex]mgh = \frac{1}{2}mv^2[/tex]

where

m = 64 kg is the mass of the person

g = 9.8 m/s^2 is the acceleration due to gravity

h is the initial height of the roller coaster

v = 26 m/s is the final speed

Solving for h,

[tex]h=\frac{v^2}{2g}=\frac{(26 m/s)^2}{2(9.8 m/s^2)}=34.5 m[/tex]

Answer:

Explanation:

The formula for KE is KE = 1/2 m v^2

If they are all traveling at the same v (m/s) then the order of KE will be dependent on their masses.

10 < 14 < 18 < 30

30 has the most KE (see the formula) and 10 has the least KE

I've given you the answer. You will have to sort out WXYZ

To find the angle of impact in degrees below the horizontal, use the equations of motion to find the time of flight and horizontal distance the object covered when it rolled off the table, then apply those values to the equation for determining the angle of impact.

The subject at work here is Physics, more specifically the domain of kinematics. The angle of impact, in degrees below the horizontal, can be found using the equations of motion.

First, we'll need to find the projectile's time of flight using the equation: t = sqrt((2*y0)/g), where y0 = 0.65 m is the height of the table and g = 9.81 m/s² is acceleration due to gravity. This will give you the time.

Next, we can determine the horizontal distance covered by the object using the equation x = v0x * t, where v0x = 2.2 m/s is the initial horizontal velocity.

Finally, we can find the angle of impact using the equation θ = arctan((v*t)/x), where v is the initial vertical velocity (which should be zero as the object rolls off horizontally), t is the time of flight, and x is the horizontal distance. We finally convert the calculated angle from radians to degrees to get the answer.

https://brainly.com/question/24177011

#SPJ3

Answer:

the answer would be microwelds.

Answer:

Organ system

Explanation:

A group of organs that work together to perform a certain task

A group of organs that work together towards achieving one goal or completing one process is called an Organ system.

Explanation:

The organ system is the system which consists of the group of organ which has been assembled or grouped together to perform a particular course of action or simply say a task. There are many organ system in a human body.

For example, reproductive system, digestive system, excretory system. Here the reproductive system perform a particular task of reproduction, and so does the digestive system for the digestion and the excretory system for the excretion of waste.

Answer:

393 nm

Explanation:

The index of refraction of lucite is:

n = 1.50

The speed of light in lucite is given by:

[tex]v=\frac{c}{n}=\frac{3\cdot 10^8 m/s}{1.50}=2\cdot 10^8 m/s[/tex]

where c is the speed of light in a vacuum.

The wavelength of the light in Lucite is given by

[tex]\lambda=\frac{v}{f}[/tex]

where

[tex]v=2\cdot 10^8 m/s[/tex] is the speed of light in Lucite

[tex]f=5.09\cdot 10^{14}Hz[/tex] is the frequency

Substituting,

[tex]\lambda=\frac{2\cdot 10^8 m/s}{5.09\cdot 10^{14} Hz}=3.93\cdot 10^{-7} m = 393 nm[/tex]

Final answer:

To find the wavelength of a monochromatic light in Lucite, the given wavelength in air is divided by the refractive index of Lucite. Using the provided frequency and original wavelength, we determine the wavelength of the light in Lucite is approximately 393.7 nm.

Explanation:

A student has asked about the wavelength of monochromatic light with a frequency of 5.09 × 1014 Hz and a wavelength of 589 nanometers in air, when it passes through Lucite. To solve for the wavelength of light in Lucite, it is important to understand that the speed of light in a material is slower than in a vacuum, which directly affects the wavelength of the light in that material. The refractive index of Lucite is approximately 1.496, and using the formula for refractive index, n = c/v (where c is the speed of light in vacuum and v is the speed of light in the material), and the relationship between speed, frequency, and wavelength (λ), v = λf, we can rearrange these to find the wavelength in Lucite. We start with the basic relation in vacuum, c = λ_0f, to find the original speed of light through air (which is approximately equal to c), and then apply the refractive index to find the new wavelength in Lucite: λ = λ_0 / n. Applying the given values, the wavelength in Lucite becomes 589 nm / 1.496, which equals approximately 393.7 nm.

Answer:

a. open.

Explanation:

Open System:

A system that has external interactions is called an open system. In natural sciences an open system is the one whose border is permeable to both energy and mass. In thermodynamics a closed system, by contrast, is permeable to energy but not to matter.

As there are external interactions, the open system might lose/gain energy as well as matter.

Answer:  

closed

Explanation:

Answer:

I think it's d. The coil gains an electical current

Explanation:

Final answer:

The Earth's position when the Sun reaches its lowest midday position in the sky is during the winter solstice. In the northern hemisphere, this occurs on December 21 or 22, and in the southern hemisphere, it occurs on June 20 or 21, both being the result of the tilt of Earth's axis.

Explanation:

The position of the Earth when the Sun rises to its lowest midday position in the sky in the northern hemisphere occurs during the winter solstice, which takes place on December 21st or 22nd. At this time, the Earth's axis of rotation is tilted away from the Sun, resulting in the Sun rising the most south of east, setting the most south of west, and taking its lowest and shortest path across the sky. This results in the shortest day and the longest night of the year for the northern hemisphere.

In contrast, for the southern hemisphere, the situation is reversed. The lowest midday position of the Sun occurs around June 20th or 21st, during their winter solstice. In this case, the Earth's axis is tilted such that the southern hemisphere is pointed away from the Sun, and thus the Sun takes a low arc across the sky, resulting in short days and long nights for that hemisphere.

Answer:

Inclined plane.

Explanation:

Geometrically, a screw is a narrow inclined plane that is wrapped around a cylinder. Like the other simple machines a screw can amplify force; a small rotational force (torque) on the shaft can exert a large axial force on a load.

A screw is a cylinder with a head (solid top) at one end and a pointed tip (like a nail) at the other end.

The mechanical advantage of the screw depends on the space between the threads and the length (and thickness) of the screw. The closer the threads are, the greater the mechanical advantage. It is easier to drive a screw into an object if the thread spacing is smaller.

Answer:

Inclined Plane

Explanation:

A screw incorporates which other simple machine?

lever

wheel and axle

inclined plane

pulley

Answer:

one-half the amount

Explanation:

Please mark brainliest and have a great day!

90.2 m/s. A rock dropped from rest after it has falling for 9.2 seconds will have a velocity of 90.2m/s.

The bodies left in free fall increase their speed (downwards) by 9.8 m/s² every second. The acceleration of gravity is the same for all objects and is independent of the masses of these. In the free fall the air resistance is not taken into account.

v = g*t

v = (9.8m/s²)(9.2s) = 90.2 m/s

Answer:

The speed of the headband, to the nearest whole number relative to a stationary observer watching Karen, is 11m/s

Explanation:

The velocity of the headband relative to the stationary observer is equal to the velocity of Karen relative to the stationary observer plus the velocity of the headband relative to Karen. Mathematically:

[tex]V_{H} =V_{K}+V_{H/K}[/tex]

Where:

[tex]V_{K}=9m/s [/tex]

[tex]V_{HK}=-20m/s [/tex] (it's negative because it mover backward)

[tex]V_{H} [/tex]: velocity of the headband relative to the stationary observer

Plugging these values

[tex]V_{H} =9m/s-20m/s=-11m/s[/tex]

Speed is simply the magnitude of velocity or its absolute value, that is to say, 11m/s (positive)

Answer:

The strength of the charge and the distance between the two bodies.

Explanation:

According to coulombs law, electrical force is calculated as follows:

F = k (Q1 ×Q2)/ d²

where Q1 and Q2  represents the amount of charge between the two bodies while d is the distance between then.

This means the electrical force is directly proportional to the electrical charge of the bodies and inversely proportional to the square of the distance between them.

Bodies with high amounts charges will have stronger electrical forces between them than bodies with less electrical charges.

Charged bodies near each other will have stronger electrical forces between them than bodies far apart.

Answer:

Thermal energy

Explanation:

A burner on a stove produces thermal energy

Answer:

Thermal energy

Explanation:

A burner on a stove produces thermal energy.

Hope this helps!

Feel free to ask if you have anymore questions!

Answer:

The digestive process:

Mouth

Esophagus

Stomach

Small intestine

Pancreas

Liver

Large intestine

Explanation:

The digestive system is made up of the GI tract or digestive tract—and the liver, pancreas, and gallbladder. The GI tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system.

Final answer:

The correct order of the digestive organs as food passes from the mouth to the anus is mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus. Accessory organs aid digestion but do not directly contact food.

Explanation:

The digestive system includes several major organs through which food travels from the mouth to the anus. To answer both review questions provided, here is the correct sequence of the digestive organs along the gastrointestinal tract, starting with the mouth:

In addition to these organs directly involved in the passage of food, there are accessory organs such as the salivary glands, pancreas, liver, and gallbladder that play crucial roles in digestion. These accessory organs assist in breaking down food through the secretion of enzymes and other digestive juices, but do not come into direct contact with the food within the GI tract.

Answer:

The force that required an object to move is greater than friction force. The opposite force for an object in motion is the friction force (assuming that the surface where the object lies is rough as most real objects are). This force is needed to be overcome to set the object to motion.

Explanation:

Answer:

I think it would be exchanging sorry if it's wrong