I found the answer so first reply saying “apple” gets brainliest!!

Answer:

sum of volumes = (16.6 ± 0.03) cm³

and difference of volumes = (3.8 ± 0.03) cm³

Explanation:

Here,

V₁ = (10.2 ± 0.02) cm³ and V₂ = (6.4 ± 0.01) cm³.

Now,

∆V = ± (∆V₁ + ∆V₂)

= ± (0.02 + 0.01) cm³

= ± 0.03 cm³

V₁ + V₂ = (10.2 + 6.4) cm³ = 16.6 cm³ and

V₁ - V₂ = (10.2 - 6.4) cm³ = 3.8 cm³

Thus, sum of volumes = (16.6 ± 0.03) cm³

and difference of volumes = (3.8 ± 0.03) cm³

-TheUnknownScientist

Answer:

I hope it's helpful .............

Answer:

A. Solids

Explanation:

only Mercury is liquid soo .... solid

The definition of horsepower is . A. the amount of force used to cover the length of an English associated activities track B. the practical benefit of utilizing a standard horse

Who developed the horsepower?

James Watt, an engineer, is credited with creating the term horsepower. According to legend, Watt wanted to find a method to describe the power that one of those animals could produce while he was dealing with ponies in a coal mine. An engine is connected to a dynamometer in order to determine its horsepower.

What is the power of a horse?

The most prevalent unit of power is horsepower , which measures how quickly work is completed. According to the British Imperial Units, a horsepower is equivalent to 33,000 walking of work per minute, or the force required to elevate a mass of 3 million pounds one foot in a minute.

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The distance of your hometown from school is 318.64 km.

Given data

Distance S = 190 km

Speed v = 97 km / h

Now, the time taken to travel S distance is calculated as,

t = S / v

t = 180 / 95

t = 1.958 hrs

Now, the total time is given as

Total time T = 4.0 h

So, remaining time t ' = T - t = 4 hrs - 1.958 hrs = 2.042 hrs

Now, the velocity after travel 190 km is v ' = 63 km/ h

Distance travel in this velocity S ' = v ' t '

= 128.6 km

Now, the distance of your hometown from school , S " = S + S '

= 190 km + 128.6 km = 318.64 km

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Answer:

add molecules

a) The spring constant is 896760 N/m.

b) F = -896760x

(a) To determine the spring constant, we need to find the slope of the linear portion of the graph. The slope can be found by dividing the change in force by the change in extension.

(b) Hooke's law states that the force applied to a spring is proportional to the spring's extension, with the constant of proportionality being the spring constant. So the equation for this spring would be:

F = kx

where F is the force, x is the extension, and k is the spring constant.

Therefore, the spring constant is 896760 N/m. It could then be concluded that the spring constant is as given above.

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The cholesterol levels of the patients are assessed after many months of adherence to their regimens. In this research, cholesterol level is the Dependent variable.

Us Department of Human services Services advises that most healthy adults engage in at least 150 hours of moderate cardiovascular exercise or 75 minutes of strenuous aerobic activity per week, or a mix of both.You should spread out this workout over the period of a week, according to the instructions.

The 80/20 rule states that 20% of your training time (effort) results in 80% of your workout benefits (such as weight loss or muscle growth).

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Answer:

When light gets in contact with water, it emerges into the air, and then it speeds up, which makes it look shallower than it actually is.

Explanation:

Answer:

Refraction

Explanation:

Light rays reflected from the fish are refracted at the surface of the water, but the eyes and brain trace the light rays back into the water as thought they had not refracted, but traveled away from the fish in a straight line. This effect creates a "virtual" image of the fish that appears at a shallower depth.

Explanation:

p=m x v

to find the mass:

m= p/v

=47/11

=4.27 kg

For a rectangular storage tank filled with paraffin to a depth of 2 m, the volume, weight, mass of paraffin, and pressure at the bottom of the tank are:

a. The volume is 24 m³.

b. weight is 240,000 N,

c. mass is 24,490 kg, and

d. pressure is 23,530 Pa.

a) The volume of paraffin in the rectangular storage tank can be calculated using the formula:

Volume = Length x Width x Depth

Given:

Length = 4 m

Width = 3 m

Depth = 2 m

Substituting the values into the formula, we have:

Volume = 4 m x 3 m x 2 m

Volume = 24 m³

Therefore, the volume of paraffin in the tank is 24 cubic meters.

b) The weight of the paraffin can be calculated using the formula:

Weight = Volume x Density x Acceleration due to gravity

The density of paraffin varies, but we can assume a typical value of 10,000 kg/m³. The acceleration due to gravity is approximately 9.8 m/s². Substituting these values into the formula:

Weight = 24 m³ x 10,000 kg/m³ x 9.8 m/s²

Weight = 240,000 N

Therefore, the weight of the paraffin in the tank is 240,000 Newtons.

c) The mass of the paraffin can be calculated using the formula:

Mass = Density x Volume

Substituting the given values:

Mass = 10,000 kg/m³ x 24 m³

Mass = 24,490 kg

Therefore, the mass of the paraffin in the tank is 24,490 kilograms.

d) The pressure at the bottom of the tank due to the paraffin can be calculated using the formula:

Pressure = Weight / Area

The area of the bottom of the tank is equal to the length multiplied by the width. Substituting the values:

Area = 4 m x 3 m

Area = 12 m²

Pressure = 240,000 N / 12 m²

Pressure = 20,000 Pa

Therefore, the pressure at the bottom of the tank due to the paraffin is 20,000 Pascals (Pa).

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Answer:

54 miles speed

Explanation:

Answer:

1 cm/s²

Explanation:

I just took the quiz

The asteroid 234 Ida has a mass of about 4×1016 kg and an average radius of about 16 km. The acceleration due to gravity will be 1.04 cm/s². Hence, option A is correct.

The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity. M/s² is its SI unit. Its vector nature—which includes both magnitude and direction—makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on the earth's surface is 9.8 m/s².

The formula for the acceleration due to gravity is g=GM/r².

According to the question, the given values are :

Mass, M = 4 × 1016 kg or

M = 4 × 10¹⁶.

Radius, r = 16 km or,

r = 16000 meter.

G = 6.67 × 10⁻¹¹ Nm²/kg²

g = (6.67 × 10⁻¹¹ ) (4 × 10¹⁶) / 16000²

g = 0.0104 m/s² or,

g = 1.04 cm/s².

Hence, the acceleration due to gravity will be 1.04 m/s²

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Answer:

(mv^2/R)/(mg)=1/2

v^2=R/2g

The expression for the speed of the mass is \(v = \sqrt{\frac{gL}{3} }\)

The given parameters;

mass of the string, = m

length of the string, = L

speed of the string, = v

The tension of the string at the top of the circle;

\(T_{top} = \frac{mv_t^2}{r} - mg\)

The tension of the string at the bottom of the string;

\(T_{bottom} = \frac{mv_b^2}{r} + mg\)

The ratio of the two force is given as;

\(\frac{T_{top}}{T_{bottom}} = \frac{mg - \frac{mv_t^2}{r} }{mg + \frac{mv_b^2}{r}} = 0.5\\\\0.5(mg + \frac{mv_b^2}{r}) = mg - \frac{mv_t^2}{r}\\\\mg + \frac{mv_b^2}{r} = 2(mg - \frac{mv_t^2}{r})\\\\mg + \frac{mv_b^2}{r} = 2mg - 2\frac{mv_t^2}{r}\\\\2\frac{mv_t^2}{r} + \frac{mv_b^2}{r} = 2mg - mg\\\\2\frac{mv_t^2}{r} + \frac{mv_b^2}{r} = mg\\\\assuming \ v_t = v_b\\\\3\frac{mv^2}{r}= mg\\\\\frac{v^2}{r} = \frac{g}{3} \\\\v^2 = \frac{rg}{3} \\\\v = \sqrt{\frac{rg}{3}}\)

\(v = \sqrt{\frac{gL}{3} }\)

Thus, the expression for the speed of the mass is \(v = \sqrt{\frac{gL}{3} }\)

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The density of 1 mole of oxygen at a pressure of 4×10⁻⁴ Nm⁻² and a temprature of 273.2 K is 2.82×10⁻⁶ g/m³

We'll begin by obtaining the volume of the oxygen. This can be obtained as follow:

PV = nRT

Divide both sides by P

V = nRT / P

V = (1 × 8.314 × 273.2) / 4×10⁻⁴

V = 5678462 m³

Finally, we shall determine the density of the oxygen. This can be obtained as follow:

Density = mass / volume

Density of oxygen = 16 / 5678462

Density of oxygen = 2.82×10⁻⁶ g/m³

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Answer:

P = 39200.76

Explanation:

formula is:

P = pgh

P = pressure

p = density of fluid

g = acceleration due to gravity ( 9.81 m/s2  for earth)

h = height above the point we are looking for

P = pgh

P = 999x9.81x4

P = 39200.76

The car is moving at approximately 12.5 meters per second.

The kinetic energy (KE) of an object can be calculated using the formula:

KE = 1/2 * m * \(v^2\)

where

KE = kinetic energy,

m =Mass of the object, and

v = velocity.

In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .

Substituting the  values , we have:

125,000 J = 1/2 * 1600 kg *\(v^2\)

Now, we can solve for v by rearranging the equation:

\(v^2\) = (2 * 125,000 J) / 1600 kg

\(v^2\) = 156.25 \(m^2/s^2\)

Taking the square root, we find:

v = √156.25\(m^2/s^2\)

v ≈ 12.5 m/s

Therefore, the car is moving at approximately 12.5 meters per second.

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Answer:

The change in momentum experienced by the bowling ball is 96 kgm/s.

Explanation:

Given;

mass of the bowling ball, m = 12 kg

velocity of the bowling ball, v = 8 m/s

time  of motion, t = 10 s

The change in momentum experienced by the bowling ball is equal to the impulse experienced by the bowling ball.

ΔP = J = F x t

\(J = ft =\frac{mv}{t} \times t = mv\\\\J = 12 \times 8\\\\J = 96 \ kg.m/s\)

Therefore, the change in momentum experienced by the bowling ball is 96 kgm/s.

A big tractor is more efficient and productive than a small tractor, allowing it to plow through more fields and cover more ground with less time and effort.

Engine Power: Big tractors have larger and more powerful engines than small tractors, which allow them to generate more torque and power to pull heavy loads and work for longer periods of time without overheating or breaking down. This means they can work more efficiently and cover more ground than small tractors.

Size and Weight: Big tractors are usually larger and heavier than small tractors, which gives them more stability and traction on the ground. This allows them to plow through tough and uneven terrain with less effort and more control, reducing the time and effort needed to complete the task.

Implements: Big tractors can accommodate larger and more advanced implements, such as wider plows, cultivators, and seeders, which allow them to cover more ground with each pass. These implements can also be customized to match the specific needs of the soil and crops, increasing the efficiency and productivity of the tractor.

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In order to calculate the change in length, we can use the following formula:

Where deltaL is the change in length, L0 is the initial length, alpha is the coefficient of linear expansion and DeltaT is the change in temperature.

So we have:

So the change in length is 0.12 meters or 12 centimeters.

Answer:

A, C, E

Explanation:

I put this and got it right.

Answer:

0m/s²

Explanation:

The acceleration of the given body whose motion has been described will be zero.

This is because the body moves with a constant velocity.

Acceleration is defined as the rate of change of velocity with time.

Since in this problem, the velocity is not changing per time, then the acceleration would be zero.

A body moving steadily implies that such body is not changing its motion by the virtue of its velocity and even direction.

Answer:

blanket:thermal conductivity

as it conduct heat.

aquarium glass:transparency

as light can be transfered from one side to

another.

Answer and Explanation:

A well-coated structure is defined as having a coating that meets a certain standard of quality. The answer to this particular question depends on the specific criteria being used to evaluate the coating. This would typically require a coating coverage of 90% or better, if not higher.

However, in general, a well-coated structure would typically refer to a surface that has been thoroughly and evenly covered with a coating material such as paint or varnish. This ensures that the underlying material is protected from environmental factors such as moisture and UV radiation. In addition, a well-coated structure can also improve the overall appearance of the surface, making it more aesthetically pleasing. Regarding the options provided in the question, the answer would depend on the specific criteria being used to evaluate the coating. However, it is safe to say that a well-coated structure would require a high level of coating coverage, with minimal areas left uncovered or with an uneven application. This would typically require a coating coverage of 90% or better, if not higher. Ultimately, the specific answer would depend on the standards and expectations set by the evaluating body.

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A well-coated structure is defined as having a coating that meets a certain standard of quality. The answer to this particular question depends on the specific criteria being used to evaluate the coating. This would typically require a coating coverage of 90% or better, if not higher.

However, in general, a well-coated structure would typically refer to a surface that has been thoroughly and evenly covered with a coating material such as paint or varnish. This ensures that the underlying material is protected from environmental factors such as moisture and UV radiation. In addition, a well-coated structure can also improve the overall appearance of the surface, making it more aesthetically pleasing.

Regarding the options provided in the question, the answer would depend on the specific criteria being used to evaluate the coating. However, it is safe to say that a well-coated structure would require a high level of coating coverage, with minimal areas left uncovered or with an uneven application. This would typically require a coating coverage of 90% or better, if not higher. Ultimately, the specific answer would depend on the standards and expectations set by the evaluating body

Answer: A. Balloons can be filled with air.

C. Air has mass.

Explanation:

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Balloons are able to be filled with air and air has mass.

From the calculation, the normal force is 6161.2 N.

The normal force is given by the expression;

N - mg = ma

Then;

N = mg + ma

m = 84.4 kg

g = 9.8 m/s^2

a = 63.2 m/s2

Now we have;

N = m(g + a)

N = 84.4 (9.8 + 63.2)

N = 6161.2 N

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The magnitude of a momentum of a  motorcycle of a mass of 100kg at rest stage is 0kg-m/sec and momentum of a motorcycle is 4000kg-m/sec when it travels with 40m/sec speed.

We know very well that momentum is defined  as the quantity of the motion of the body.

Momentum is represented by the product of mass and velocity, or in other words p=mass × velocity

Momentum is called as a vector quantity. It means it has proper magnitude and proper direction.

From momentum, impulse is also calculated.

At rest stage velocity of motorcycle is 0m/sec

Therefore, momentum=100×0=0Kg-m/sec

Now, when motorcycle is moving with speed 40m/sec, then momentum is

=>p=100kg×40m/sec

=>p=4000kg-m/sec

There are various laws in physics  which are derived by the conservation of momentum.

Hence, magnitude of momentum are 0kg-m/sec and 4000kg-m/sec.

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Answer:

See the answers below.

Explanation:

We can solve both problems using Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F =m*a

where:

F = force [N] (units of newtons)

m = mass = 1000 [kg]

a = acceleration = 3 [m/s²]

\(F = 1000*3\\F=3000[N]\)

And the weight of any body can be calculated by means of the mass product by gravitational acceleration.

\(W=m*g\\W=1000*9.81\\W=9810 [N]\)

Answer:

The characteristics that determine how easily two substances change temperature are:

The volume and density of the substances and the amount of time they are in contact do not directly affect how easily they change temperature.

Explanation:

Answer:

Well velocity is the varaible with direction

Explanation:

For this circuit, the voltage is 4.2 V. then power given is 0.9 W and receiving across 55Ω resistance is 0.07 W and that of 30Ω resistance is 0.14 W. Resistor are connected in parallel, its equvalent resistance is R₁R₂/R₁+R₂.

Both resistor are connected in parallel hence their equivalent resistance in parallel combination is given as,

R = 55*30/(55+30)

R = 19.4 Ω

Power given to the circuit is,

P = V²/R = 4.2/19.4 = 0.9 W

Receiving power taken from 55Ω resistor

P = V²/R = 4.2/55 = 0.07 W

Receiving power taken from 30Ω resistor

P = V²/R = 4.2/30 = 0.14 W

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