The atomic mass of an element is not a whole number because the atomic mass is the weighted mass of the isotopes of that element, and isotopes have different.

Answer:

energy transfer electric to heat

Answer:

Explanation:The brick has more matter because it has more mass. :))

4.52m/s is the minimum speed the block has to have to reach the top of the ramp when you want to send a 100 g block to the top of a frictionless ramp. the ramp is inclined at 20° and is 3.0 m long.

Between a surface or substance and something moving along or through it, there is no resistance is termed as frictionless.

Given:

100 g block

inclined at 20°

3.0 m long

for height we use

h=3.0*sin20°=1.026

with the above equation using conservation of energy we can find the speed required:

KE=PE

0.5mv^2=mgh

here mass cancels

0.5v^2=gh

v=\(\sqrt{10*1.026/0.5}\)

v=4.52m/s

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The distance traveled by the box along the ramp is 0.51 m.

Apply the principle of conservation of energy;

Potential energy of the box at top of incline = Elastic potential energy at bottom

mgh = ¹/₂kx²

where;

h = L sinθ

where;

mg(L sinθ) = ¹/₂kx²

(18)(9.8)(L sin25) = ¹/₂(740)(0.32)²

74.55 L = 37.89

L = 37.89 / 74.55

L = 0.51 m

Thus, the distance traveled by the box along the ramp is 0.51 m.

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A sharp point needle pierce easily than a blunt edge​, because of high pressure of needle. Pressure is nothing but the force per unit area. in he needle there is force applied on very small area therefore it has high pressure applied on the area. whereas, blunt edge has large area for equal force, that is why.

Pressure is defined as the force applied perpendicular to an object's surface per unit area across which that force is dispersed. Gauge pressure is the pressure in relation to the surrounding atmosphere. Pressure is expressed using a variety of units.

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The viscosity of the experimental lubricant is 83.63 cP. The calculated viscosity can be confirmed by comparing it with known viscosity values and conducting additional tests for validation.

To calculate the viscosity of the liquid, we can use the formula for terminal velocity in a viscous medium. The terminal velocity (V) is given by the equation V = (2/9)(g)(r^2)(ρb - ρl) / η, where g is the acceleration due to gravity, r is the radius of the ball, ρb is the density of the ball, ρl is the density of the liquid, and η is the viscosity of the liquid.

Rearranging the formula, we can solve for viscosity η, which gives us η = (2/9)(g)(r^2)(ρb - ρl) / V.

Plugging in the given values, we have g = 9.8 m/s^2, r = 0.001 m, ρb = 2120 kg/m^3 (converted from 2.12 g/cm³), ρl = 1060 kg/m^3 (converted from 1.06 g/cm³), and V = 0.0138 m/s (converted from 1.38 cm/s).

Substituting these values into the formula, we can calculate the viscosity in cP (centipoise) by multiplying the result by 1000, giving us 83.63 cP. To validate the calculated viscosity, it is important to compare it with known viscosity values for similar lubricants and conduct additional tests to ensure consistency and accuracy.

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Answer:  If one billiard ball hits another, the second will move with the same force as the first.

A child wants to jump to climb a tree (reaction), he must push the ground to propel himself (action).

A man deflates a balloon; the force with which the air comes out causes the balloon to move from one side to the other.

Explanation:

-Hitting A Wall

-Rowing a boat

-Walking

Explanation:

1.If you hit a Wall with your hands or legs, you get hurt. Why?

Because of Newton's Third Law. You hit the wall with a force and that exact same amount of force is returned by the wall.

2. While Rowing a boat, when you want to move forward on a boat, you paddle by pushing the water backwards, causing you to move forward.

3.While Walking, You push the floor or the surface you are walking on with your toes, And the surface pushes your legs up, helping you to lift your legs up.

i will say that 32.2m s2 bt am not sure

Answer:

Answer: Magnitude = [____]; unit = [____].

Explanation:

Answer:

every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

Explanation:

It is not clear how many decimal places were used to measure the mass of each square of aluminum as the question doesn't provide that information.

Additionally, it's not possible to determine which places were exact and which were estimated without knowing the measurement itself. Decimal places refer to the number of digits to the right of the decimal point when measuring a quantity. The precision of a measurement is determined by the number of decimal places used. For example, if a measurement is recorded to the nearest hundredth, it has two decimal places. If a measurement is recorded to the nearest thousandth, it has three decimal places.

Exact numbers are numbers that are known with complete accuracy. They are often defined quantities, such as the number of inches in a foot or the number of seconds in a minute. When using a measuring device, the last digit of the measurement is usually an estimate, as there is some uncertainty associated with the measurement. Therefore, it is important to record which digits are exact and which are estimated when reporting a measurement.

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Answer:

\(\huge\boxed{\sf Power = 1274\ W}\)

Explanation:

Total mass = m = 90 kg + 40 kg = 130 kg

Height = h = 20 m

Acceleration due to gravity = g = 9.8 m/s²

Time = t = 55 s

Power = P = ?

\(\displaystyle P=\frac{Work}{Time}\)

Here, the work is done in the form of potential energy.

So,

Work = P.E

As we know,

P.E = mgh

P.E = (130)(9.8)(20)

So,

Power = 25480 / 20

Power = 1274 W

\(\rule[225]{225}{2}\)

1.5m/s2

F=ma

a=F/m

a=60/40

a=1.5m/s2

The acceleration of the cart is 1.5 meter per seconds square.

Given the following data:

To find the acceleration of the cart, we would use Newton's Second Law of Motion.

Mathematically, Newton's Second Law of Motion is given by the formula;

\(Acceleration = \frac{Net\; Force}{Mass}\)

Substituting the given parameters into the formula, we have;

\(Acceleration = \frac{60}{40}\)

Acceleration = 1.5 meter per seconds square.

Therefore, the cart's acceleration is 1.5 meter per seconds square.

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Answer:

d = 8.45 m

Explanation:

Given that,

A basketball is dropped from top of the rim.

It takes 1.3s to fall.

We need to find the displacement of the basketball. Let the displacement is d. Using second equation of kinematics,

\(d=ut+\dfrac{1}{2}at^2\)

Where

u is the initial velocity, u = 0

a = g

So,

\(d=\dfrac{1}{2}\times 10\times 1.3^2\\\\d=8.45\ m\)

So, the displacement of the basketball is 8.45 m.

Answer: Periods

Explanation: The rows are called Periods

The columns are Groups

Periodic table

Our cultural background, personal experiences, and societal norms heavily influence our preferences for art. This argument can be applied to all forms of art, including music, movies, and food. Understanding and respecting the differences in cultural expressions can help us appreciate the diversity and richness of the world's art forms.

When it comes to art, people often have their own preferences and tastes. These preferences can be influenced by a variety of factors, including personal experiences, upbringing, societal norms, and cultural background. In this sense, one's own culture can greatly affect their opinion of the art of other cultures.
Firstly, one's cultural background shapes their perception of art. For example, individuals from Western cultures tend to appreciate realistic paintings and sculptures, while those from Eastern cultures prefer abstract art. This can be attributed to differences in cultural values and aesthetics.
Secondly, personal experiences also play a role in shaping one's preferences. For instance, if someone grew up listening to a certain type of music or watching a particular genre of movies, they are more likely to develop a liking for them.
Identifying one's cultural biases and preferences is important in interpreting and judging art from other cultures. When we interpret art, we analyze it based on our own experiences, values, and beliefs. However, it is crucial to recognize that different cultures have unique perspectives and ways of expressing themselves through art.
Judging art from other cultures should involve an open-minded approach that acknowledges cultural differences and appreciates their unique artistic expressions. One should avoid using their own cultural standards to evaluate the art of other cultures. Instead, we should strive to learn about different cultures and their art forms to develop a deeper understanding and appreciation for them.
In conclusion, our cultural background, personal experiences, and societal norms heavily influence our preferences for art. This argument can be applied to all forms of art, including music, movies, and food. Understanding and respecting the differences in cultural expressions can help us appreciate the diversity and richness of the world's art forms.

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Answer: The mesocyclone

Explanation: The unsaturated air, if moved upward, will be cooler than the surrounding air and it will sink. ... This convective action (that is, the circulation of air as a result of heat transfer) produces the huge clouds commonly associated with thunderstorms and tornadoes.

Hopes this help um pls mark me as brainliest

Answer:

Concave mirror

Explanation:

Because as we move the object far away from the mirror, the image gets inverted.

Answer:

Concave mirror

Explanation:

Answer:2 hours

Explanation:

(a) The distance travelled by the object is  100 m.

(b) The displacement of the object in time interval between t = 0 s and t = 10 s is 60 m.

(a) The distance travelled by the object is calculated from the total area of the curve.

total distance = area of triangle 1 + area of triangle 2 + area of rectangle.

total distance = (¹/₂ x base x height)₁ +  (¹/₂ x base x height)₂ + length x width

total distance = (¹/₂ x 6 s x 20 m/s) +  (¹/₂ (8 - 6) 20) + (10 - 0)(10 - 8)

total distance =  60 m + 20 m + 20 m

total distance = 100 m

(b) The displacement of the object in time interval between t = 0 s and t = 10 s is calculated as follows;

displacement = final position - initial position

displacement =  (¹/₂ x base x height)₁ +  (¹/₂ x base x height)₂ + length x width

displacement = (¹/₂ x 6 s x 20 m/s) +  (¹/₂ (8 - 6) (-20)) + (10 - 0)(10 - 8)

displacement = 60 m - 20 m + 20 m = 60 m

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Answer:

A.0 and - 1 m/s^2

Explanation:

The graph of velocity vs t permits estimate the acceleration because acceleration is the change of velocity respect time.

The change of velocity is the derivative of the velocity function, which is the same that the slope of the tangent line in the desired point.

The graph provided by you contains the tangent lines, so you can easily find the slope for the poiints x and y.

Point x:

The tangent line is horizontal, then the slope is zero, which means that at this point the acceleration is zero.

Point y: the the slope of the tangent line is rise / run Av / At =

= (50 m/s)/(7-12 s) = 5/(-5)= -1 m/s^2 = acceleration at point y

Answers: 0 and - 1 m/s^2

The factors that can change the pattern observed on a screen during Young's double-slit experiment are given below:1. Width of the slit. 2. Distance between slits. 3. Distance between slits and screen. 4. Wavelength of the incident light. 5. Refractive index of the medium.

The factors that can change the pattern observed on a screen during Young's double-slit experiment are given below:

1. Width of the slit. The width of the slit can influence the diffraction pattern that is observed on a screen. When the width of the slit decreases, the central maximum of the diffraction pattern becomes broader, and the intensity of the secondary maxima reduces.

2. Distance between slits. The distance between the slits in the double-slit experiment also affects the pattern on the screen. The distance between the slits is equal to the spacing between the maxima. If the spacing between the slits decreases, the distance between the maxima decreases, and vice versa.

3. Distance between slits and screen. The distance between the slits and the screen is also a factor that can affect the diffraction pattern. When the distance increases, the spacing between the maxima becomes wider, and the intensity of the maxima decreases.

4. Wavelength of the incident light. The wavelength of the incident light is another factor that affects the diffraction pattern on the screen. When the wavelength increases, the spacing between the maxima increases, and vice versa.

5. Refractive index of the medium. The refractive index of the medium in which the light travels can also influence the diffraction pattern observed on a screen.

When the refractive index of the medium changes, the position of the maxima changes as well. These are the factors that can change the pattern observed on a screen during Young's double-slit experiment.

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A golf ball is hit into the air with a velocity of 40 m/s and it stays in the air for a period of 2.77 s.

The ball is allegedly moving in a projectile manner.

Given that,

Initial velocity of the ball = 40 m/s

Angle made with the horizontal = 20°

It is said to neglect air resistance.

We know the time period for the ball in projectile motion as

T = (2*u sinθ)/g ----(1)

where, T is the time period

u is the initial velocity

θ is the angle established with the horizontal, and (9.81 m/s²) is the acceleration brought on by gravity.

Substituting the values in the above equation, we have

T = (2*u sinθ)/g = (2* 40 sin20°)/9.81 = (80* sin20°)/9.81

⇒ (80* 0.34)/9.81 = 2.77 s

Thus, the golf ball stays in the air for 2.77 s.

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The expression that relates the force to the momentum and the time taken is \(F =\frac{\Delta P}{t}\).

The impulse experienced by the body at the given constant force and time is calculated as follows;

\(J = \Delta P = mv\)

where;

ΔP is change in momentum

The force acting on a body is given by Newton's second law of motion;

\(F = ma\\\\F = \frac{mv}{t} \\\\Ft = mv\\\\Ft = \Delta P\\\\F = \frac{\Delta P}{t}\)

Thus, the expression that relates the force to the momentum and the time taken is \(F =\frac{\Delta P}{t}\).

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