Density Questions
How many blocks of ice-cream each 10cm x 10 cm x 4cm can be stored in the compartenent of a deep-freeze measuring 40 cm x 40cm x 20cm?
​

Answer:

No it’s 1,130

Explanation:

I did online

Answer:

\(0.046\ kg\)

Explanation:

\(We\ are\ given\ that,\\Acceleration\ produced\ on\ the\ golf\ ball\ due\ to\ Force\ exerted=265.2\ m/s^2\\Magnitude\ of\ the\ Force\ exerted\ over\ the\ Golf-Ball=12.2\ N\\We\ know\ that,\\'The\ force\ acting\ on\ an\ object\ is\ equivalent\ to\ the\ product\ of\ it's\ mass\\ and\ the\ acceleration\ produced'.\\Or,\\F=ma\\Let\ the\ mass\ of\ the\ golf\ ball\ be\ m,\\Hence,\\12.2=265.2\ m\\m=\frac{12.2}{265.2}=0.046\ kg\)

Answer of the all following horizontal force question as follows.

Horizontal force is a type of force that acts parallel to the ground, or in a horizontal direction. It is also known as a lateral force. This type of force is often encountered in everyday life and in physics.

a) The height of Aaron's kick can be calculated using the equation: h = (v^2sin2θ)/2g, where v is the initial velocity, θ is the angle of projection and g is the acceleration due to gravity. Plugging in the given values, we get h = (67^2sin(43))/ (2*9.8) = 36.3 m.

b) The time of travel can be found using the equation: t = (2v sinθ)/g. Plugging in the given values, we get t = (2*67sin(43))/9.8 = 7.72 s.

c) The distance of the kick can be found using the equation: d = (v^2sin2θ)/g. Plugging in the given values, we get d = (67^2sin(2*43))/9.8 = 130.3 m.

18-

a. Hailey kicked the ball to a height of 21.5 m.

b. The time of travel in the air was 2.5 s.

c. The ball hit the ground 91 m away from the goal. Since she was standing 100 m away, she will not score a goal.

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Answer:

The dust present in the clouds.

Explanation:

The complicated composition molecules that can be found in space are generally associated with clouds of dust. The significant amount of dust in these clouds provides protection not only for these molecules, but for any body that makes up or is associated with dust clouds.

It is exactly this dust that protects the molecules against the action of ultraviolet rays.

The new volume corresponding to a new pressure can be calculated using Boyle's law. The volume of the gas when pressure increased to 2.40 atm is 3.01 L.

According to Boyle's law, the volume of a gas is inversely proportional to the pressure of the gas. Thus PV = a constant.

If a system have initial pressure P1 and volume of V1 when changes to final pressure of P2 and volume V2, the relation between them can be written as follows:

P1V1 = P2V2

Thus for the initial pressure of 1.7 atm and 4.25 l volume, the final volume corresponding to 2.4 atm pressure is calculated as follows:

1.7 atm × 4.25 L = 2.4 atm × V2

V2 = (1.7 atm × 4.25 L)/2.4 atm

     = 3.01 L.

Thus,  volume of the gas when pressure increased to 2.40 atm is 3.01 L.

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A person who weighs 120 pounds on earth would weigh approximately 20 pounds on the moon. This is because the force of gravity is weaker on the moon due to its lower mass and smaller size. The radius of the moon is about 1,737 km (1,080 miles) while its mass is approximately 7.342 × 10²² kg (81 billion tons).

Using this data, we can calculate the acceleration of gravity on the moon's surface which is about 1.62 m/s².A person who weighs 120 pounds on earth would weigh approximately 20 pounds on the moon.

Here's how to calculate the acceleration of gravity on the moon's surface:G = GM / R² where G is the acceleration of gravity, M is the mass of the moon, and R is the radius of the moon.

We know that M = 7.342 × 10²² kg and R = 1,737 km = 1,737,000 meters so we can plug in these values to find G.G = (6.67 × 10⁻¹¹ N(m/kg)²) (7.342 × 10²² kg) / (1,737,000 m)²G = 1.62 m/s²

Therefore, the acceleration of gravity on the moon's surface is 1.62 m/s².

A person who weighs 120 pounds on earth would weigh approximately 20 pounds on the moon. This is because the force of gravity is weaker on the moon due to its lower mass and smaller size.

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Answer:v=l x w x h

Explanation:

h=height

w=width

l=length

Answer:

24.108 cm3

Explanation:

4.1x2.8x2.1

24.108cm3

The compression dd of the spring with the minimum spring compression and force constant calculated in part c depends on the specifics of the problem and cannot be determined without further information.

The compression of a spring is defined as the amount of deformation that a spring undergoes when a force is applied to it. The force constant of a spring is the amount of force required to stretch or compress the spring by a certain amount. Therefore, the compression dd of a spring depends on the applied force and the force constant of the spring. The minimum spring compression occurs when the force applied is minimum or zero, in which case the compression is also zero. However, without knowing the specifics of the problem, such as the mass of the bullet or the initial velocity, we cannot determine the exact value of the compression dd. Therefore, the answer to this question is that it depends on the specifics of the problem and cannot be determined without further information.

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If the partial pressure of nitrogen in the human body is approximately 593 mm hg at sea level, the partial pressure of nitrogen cannot be 760mm Hg in a scuba diver that is at a depth of 30 feet.

Nitrogen narcosis :

The partial pressure of nitrogen increases with pressure, which produces a narcotic effect. Nitrogen narcosis affects both scuba divers and free divers. It causes depression of the central nervous system, which leads to feelings of euphoria, disorientation and irrational behavior. Divers need to consider absorption rates of different gases in order to avoid conditions such as nitrogen narcosis, and decompression sickness.

What is the partial pressure of the nitrogen?

Therefore, at sea level, where atmospheric pressure is known to be 760 mm Hg, the partial pressures of the various gases can be estimated to have partial pressures of approximately 593 mm Hg for nitrogen, 160 mm Hg for oxygen, and 7.6 mm Hg for argon.

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∑F = m.a

5 - 3 = 1.5 x a

a = 1.3 m/s²

vf² = vi² + 2ad (vi = o at rest)

vf² = 2 x 1.3 m/s² x 0.5

vf² = 1.3

vf = 1.14 m/s

Answer:

The dynamo has a wheel that touches the back tyre. As the bicycle moves, the wheel turns a magnet inside a coil. This induces enough electricity to run the bicycle's lights. The faster the bicycle moves, the greater the induced voltage - and the brighter the lights.

Because of the bicycle's actions, the wheel turns a magnet internal a coil. This induces enough strength to run the bicycle's lighting fixtures. The faster the bicycle movements, the greater the caused voltage - and the brighter the lights.

A trendy dynamo creates an instantaneous modern-day (DC) – a one-directional waft of electrical rate. A bicycle dynamo creates an alternating current (AC), which reverses course from time to time.

A dynamo is a tool normally positioned inside the hub of a motorcycle's wheel that converts the energy generated by means of the wheel spinning to electric power. That energy is then used to run front and rear dynamo lights at the bike, offering constantly-on illumination without the want to change the lighting.

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Answer:

B

Explanation:

because that's the answer

Answer:

I = 250N*s

Explanation:

I = F*t

I =  impulse or momentum

F = Force

t = time

I = 25N*10s

I = 250N*s

The maximum weight of a luminaire (lighting fixture) permitted to be hung directly from an outlet box in a ceiling 50 pound.

A luminaire that weighs more than 23 kg (50 lb) shall be supported independently of the outlet box, unless the outlet box is listed for not less than the weight to be supported.

Luminaire, or light fixture, complete lighting unit, consisting of one or more lamps (bulbs or tubes that emit light), along with the socket and other parts that hold the lamp in place and protect it, wiring that connects the lamp to a power source, and a reflector that helps direct and distribute the light.

Fluorescent fixtures usually have lenses or louvers to shield the lamp (thus reducing glare) and redirect the light emitted. Luminaires include both portable and ceiling- or wall-mounted fixtures.

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Answer:

Average speed = 26.67 km/h

Explanation:

It is given that,

The first half of the journey by a body is traveled with a speed of 40 km/h and the next half is covered with a speed of 20 km/h

We need to find the average speed of the whole journey.​ When two speeds are given, the average speed is given by :

\(v=\dfrac{2v_1v_2}{v_1+v_2}\\\\v=\dfrac{2\times 40\times 20}{40+20}\\\\v=26.67\ km/h\)

So, the average speed of the body of the whole journey is 26.67 km/h.

Answer:

Bullying in the schools has negative effects on individual students and on the school climate as a whole. Bullying can cause long-term problems for both the victims of bullying and the bullies themselves. To explore the effects of bullying on adolescents, we will define bullying, identify the characteristics of bullies and victims, outline the extent and consequences of bullying, and present resources for further information and assistance.

Bullying is any behavior that is initiated by one or more students against a victim or victims that causes physical or psychological intimidation. Bullying behaviors can be classified as either direct (such as teasing, threatening, hitting, or stealing) or indirect (such as rumor spreading or social isolation). Boys typically employed direct methods of bullying, while girls tend to use in direct methods. Either way, behaviors must occur repeatedly overtime to be classified as bullying.

Characteristics of Bullies and Victims

There are specific behaviors that bullies tend to exhibit. The bullies often need to feel powerful and in control. They may feel no remorse when they inflict injury and suffering on others. Bullies tend to defy authority and are likely to break school rules. They seem to have little anxiety and appear to possess high self-esteem. Students who come from homes characterized by physical punishment tend to be more likely to exhibit these types of behaviors.

Victims also tend to exhibit specific characteristics. They are often anxious, insecure, cautious, and have low self-esteem. Victims tend to be socially isolated, and may lack social skills and friends. Because they tend to be weaker than their peers, either physically or socially, victims rarely retaliate against bullies. Students who have close ties with their parents/guardians or who have overprotective parents/guardians are more likely to be victimized by bullies.

When an airplane travels 640 miles from Topeka to Houston in 3. 2 hours, going against the wind. The return trip is with the wind and takes only 2 hours. Then the rate of the airplane with no wind is 260 miles/hr, and the rate of the wind is 100 miles/hr

Let Va is the velocity of the airplane

Va is the velocity of the wind

When flying against the wind then

(Va+Vw)*(3.2 hours) = 640

3.2Va + 3.2Vw = 640

3.2Vw = 640 - 3.2Va

Vw = 200 - Va----------------(1)

When flying with the wind:

(Va-V)*(2 hours) = 640km

2Va - 2Vw = 640

Va - Vw = 320 ----------------(2)

Putting the value of VW in equation (2) we get

Va - (200-Va) = 320

2Va = 320 +200

2Va = 520

Va = 260

Putting this value in equation (2)

Vw =Va - 360

Vw = 100

Therefore the rate of the airplane with no wind is 260 miles/hr, and the rate of the wind is 100 miles/hr

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The gas that makes up this layer is O3 (Ozone).

The ozone layer protects the earth from most of the sun's UVB rays. Greenhouse gases are a set of gases that accumulate in the lower layer of the atmosphere the troposphere and absorb infrared radiation to increase the average temperature of the Earth's surface. At the top of the stratosphere, 30 miles up, ozone absorbs most of the sun's harmful UV rays.

At the top of the troposphere 12 miles, up ozone acts as a greenhouse gas and traps heat. The troposphere is the lowest layer of the Earth's atmosphere. Most of the atmospheric mass is in the troposphere. Most types of clouds are in the troposphere, and almost all weather phenomena occur in this layer. Greenhouse gases are so named because they absorb infrared radiation from the sun in the form of heat which circulates in the atmosphere and is eventually lost to space.

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Answer:

Actually for people in K12 (me) the answer is, "Increase the distance between the two objects"

Explanation:

I used the answer above me and got it wrong

:))

Answer: increase the distance between the two objects

Explanation: its the correct one trust me

Answer:

Define the problem . what's exactly going on ?

- set some goals

- examine the consequences

- put your solution into practice

- brainstorm possible solutions

- Team working

Explanation:

ANY PROBLEM RELATED TO MANI CUSTOMER BILLING ACCOUNTING IN BOOKKEEPING ETC

NING A WAY TO MAKE THE COMPANY MORE PRODUCTS FIDABLE THROUGH NEW SERVICE OR PRODUCT OFFERING NEW PRICING IDEA PROMOTING AND SALES IDEA

The voltage across the bigger resistor, given the size, is 2/3 of the battery voltage.

Assuming the battery voltage is V. Also assuming the smaller resistor has the resistance, R, it means the bigger resistor would have the resistance of 2 R.

The current will be the same for both resistors and will be V / ( R + 2 R ) =  V / 3 R.

The voltage for the smaller resistor is therefore:

IR = V / 3 R x R

= V / 3

The voltage across the bigger resistor is V - V / 3 = 2 V / 3. This is 2 / 3 of the battery voltage.

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The voltage across the bigger resistor (R) is (2 V_B ) / 3.

The voltage across the bigger resistor is calculated by applying Ohm's law as shown below;

V = IR

where;

Since the two resistors are in series, the equivalent resistance is calculated as follows;

Re = R + R/2

Re = 3R/2

The current flowing in the circuit is calculated as follows;

I = V_B/Re

I = ( V_B ) x 2/3R

The voltage across the bigger resistor (R) is calculated as follows;

V' = IR

V' =  ( V_B) x 2/3R  x R

V' = (2V_B) / 3

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The form of energy stored in a stretched spring is elastic potential energy. When a spring is stretched or compressed, it possesses potential energy due to the deformation of its structure.

This potential energy is called elastic potential energy because it is associated with the elasticity of the spring.

As the spring is stretched, work is done to overcome the forces within the spring that resist the change in its length. This work is converted into potential energy, which is stored in the spring. The amount of potential energy stored in the spring is directly proportional to the amount by which it is stretched or compressed.

When two forces are simultaneously applied to a spring in opposite directions, it may result in elongation or contraction of the spring, depending on the magnitude and direction of the forces. If the applied forces are strong enough to overcome the spring's elasticity, the spring will undergo deformation and exhibit elongation or contraction. This deformation is a manifestation of the stored elastic potential energy being converted into mechanical energy.

Shear, bending, and intermolecular binding energy are not directly related to the stretching of a spring.

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Answer:

Longitudinal waves

Explanation:

With sound waves, the energy travels along in the same direction as the particles vibrate. This type of wave is known as a longitudinal wave , so named because the energy travels along the direction of vibration of the particles.

La longitud final del puente de acero es 100.018 metros.

Asumamos que la dilatación térmica experimentada por el puente de acero es pequeña, de modo que podemos emplear la siguiente aproximación lineal para determinar la longitud final del puente de acero (\(L\)), en metros:

\(L = L_{o}\cdot [1+\alpha\cdot (T_{f}-T_{o})]\) (1)

Donde:

Si tenemos que \(L_{o} = 100\,m\), \(\alpha = 11.5\times 10^{-6}\), \(T_{o} = 8\,^{\circ}C\) y \(T_{f} = 24\,^{\circ}C\), entonces la longitud final del puente de acero es:

\(L = (100\,m)\cdot [1+(11.5\times 10^{-6})\cdot (24\,^{\circ}C - 8\,^{\circ}C)]\)

\(L = 100.018\,m\)

La longitud final del puente de acero es 100.018 metros.

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Answer:

22.6 cm

Explanation:

The volume of the wire is equal to the volume of the sphere. The volume of a cylinder (the wire) is given by the formula V = πr^2h, where r is the radius and h is the height (length). The volume of a sphere is given by the formula V = 4/3πR^3, where R is the radius of the sphere.

Let’s first convert the radius of the wire from millimeters to meters:

6 mm = 0.006 m.

The volume of the wire is then V = π(0.006 m)^2(400 m) = 0.04524 m^3.

Now we can solve for the radius R of the sphere:
0.04524 m^3 = 4/3πR^3.
Solving for R gives
R = (0.04524 m^3 / (4/3π))^(1/3) ≈ 0.226 m.

Finally, let’s convert the radius from meters to centimeters:
0.226 m = 22.6 cm.

So, the radius of the sphere is approximately 22.6 cm.

A very important control of the daily range of temperature is the atmosphere.

The atmosphere is considered the most important control of the daily temperature range. The atmosphere is the layer of gases surrounding Earth that helps regulate temperature, holds oxygen, and shields us from harmful solar radiation.Therefore, this means that the atmosphere plays a vital role in regulating the temperature range experienced in different parts of the world. The atmosphere has various layers, which include the troposphere, the stratosphere, the mesosphere, and the thermosphere.

Air and moisture in the atmosphere have varying heating and cooling rates. This causes a vertical mixing of the air masses and leads to temperature control. Different atmospheric conditions, such as temperature, pressure, and humidity, cause the air to move around. The combination of these movements and other factors leads to a change in temperature in the atmosphere as a whole.

The atmosphere plays a significant role in regulating the temperature range of the Earth. Its different atmospheric conditions, such as temperature, pressure, and humidity, create a mix of air masses that leads to the change in temperature.

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Answer:

14.868

Density equals mass divided by volume

Explanation:

To convert from °C to K, we use the expression below;

           tK = t°C + 273

tK = temperature in Kelvin

t°C = temperature in celcius

A.  50°C;

        tK = 50 + 273  = 323K

B. 10°C;

      tK = 10 + 273 = 283K

C. 17°C;

     tK  = 17 + 273 = 290K

D, -40°C

    tK = -40 + 273  = 233K

The distance from Sun to Earth varies each year due to the difference in orbits. It is due to Tidal stress.

Earth is pulled along in the Sun's orbit around the galaxy. The motion of the sun causes a slight distortion in the planets' orbits as Earth travels around our star. Earth’s orbit is therefore elliptical, or somewhat egg-shaped. The Moon experiences the same effects due to Earth's motion and the Moon's gravitational pull. It is known as tidal stress.

Earth's orbit is slightly elliptical because it is not a perfect circle. And as a result, Earth is either moving from the perihelion point to the aphelion point (constantly getting closer to the Sun) or from the aphelion point to the perihelion point (constantly getting farther from the Sun).

Thus, the above phenomenon can be explained through tidal stress.

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