A naked, male corpse was found at 8AM on Tuesday, July 9.The air temperature wasalready 26.7˚C (81˚F). The body exhibited some stiffness in the face and eyelids and had a body temperature of 34.4˚C (93.9˚F). Livor mortis was not evident. Approximately how long ago did the man die? Justify your answer. Would clothing on the body have made a difference in determining the actual time of death in this case? Why or why not?

The momentum of the baseball when it hits the hand of the catcher is 6.25 kg-m/s.

The baseball's velocity (v) is 44.7 m/s and its weight (W) is 1.4 N.

Then, we must determine the baseball's mass.

M = W/g can be used to compute this.

The gravitational acceleration symbol is g.

m = 1.4/9.8

m = 0.14 kg.

An object's momentum P is equal to the sum of its mass and speed. Given by is P = mv.

P = 0.14 x 44.7

P =  6.25 kg-m/s

Hence, it has a 6.25 kg/m/s momentum when it strikes the catcher.

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Complete question - a professional baseball player can pitch a baseball with a velocity of 44.7m/s towards home plate. If a baseball weighs 1.4 N, how much momentum does it have when it hits the catcher units

Although we do not have the necessary information to provide an exact answer, we can confirm that the object will have fallen by a multiple of 9.8 meters due to gravity.

When an object is dropped, its acceleration is determined by gravity. This force applies a constant acceleration of 9.8 meters per second. Therefore, to calculate its speed at distance h, we would need to know the time it has taken the object to reach this point, and use that together with our known acceleration in order to calculate its current speed.

Therefore, we can confirm that in order to calculate the current speed of the object at point h, we require the time taken to reach this point or the value of the distance itself and that the answer will be a multiple of 9.8, due to gravity.

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Explanation:

5.4 m = 1s2

? = 784 s2

(5.4 * 784)/1

= 4,233.6 m/s2

The magnitude of the average force due to air resistance be  188.75 N.

Energy cannot be created or destroyed, according to the rule of conservation of energy. However, it is capable of change from one form to another. An isolated system's total energy is constant regardless of the types of energy present. The law of energy conservation is adhered to by all energy forms. The law of conservation of energy essentially says that

The total energy of the system is conserved in a closed system, also known as an isolated system.

Total energy of the chuck of ice at 553 m tall tower: E = mgh

= 25.0 × 9.8 × 553 Joule = 135485 joule.

If the average force due to air is W the, total energy of the ice at 353 m above the ground:

E = mgh + 1/2mv² + W(553-353)

=  25.0 × 9.8 × 353  + 1/2×25×30² + 200 W

= 97735 + 200 W joule

According to conservation of energy:

135485 =  97735 + 200 W

⇒ 200 W = 37750

⇒ W =  188.75 N.

Hence, the magnitude of the average force due to air resistance be  188.75 N.

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Answer:

D / d = 3 / 4

Explanation:

Let the wavelength and distance of screen be λ and L . Let the distance at which both the fringes fall be at x distance from central point .

For double slit experiment , location of fourth order maxima

x = 4  x λ L / d

For single  slit experiment , location of third  order minima

x =  3  x λ L / D

As they overlap

3  x λ L / D = 4  x λ L / d

D / d = 3 / 4

Answer:

It increases the time it takes for the person to stop.

Explanation:

Answer:

C: It increases the time it takes for the person to stop.

Explanation:

on edge! hope this helps!!~ o(〃＾▽＾〃)o

Answer:

The correct answer is D. solids and liquids because their particles are arranged more closely together.

Answer:

The mass of the sun is  \(m_s = 5.568 *10^{30} \ kg\)

Explanation:

From the question we are told that

       The mass of the planet is  \(M = 7 *10^{24} \ kg\)

        The  period of the planet is  \(T = 1 \ Earth \ year = 365 * 24 * 3600 = 3.15 *10^{7} \ s\)

        The speed of the planet is  \(v = 42000 \ m/s\)

Generally the radius at which the planet orbits the sun is mathematically represented as

          \(r = \frac{Gm_s }{v^2 }\)

Where \(G\) is the gravitational constant with value  \(G = 6.67 *10^{-11} \ m^3 \cdot kg^{-1} \cdot s^{-2}\)

   and  \(m_s\) is the mass of the sun

Generally the period of planet is mathematically represented as

         \(T = \frac{2 \pi r}{v}\)

=>       \(T = \frac{2 \pi}{v} * \frac{G * m_s}{v^2}\)

=>        \(m_s = \frac{T * v^3}{2* \pi * G}\)

substituting values  

      \(m_s = \frac{ 3.15 *10^{7} * (42000)^3}{2* 3.142 * 6.67 *10^{-11}}\)

      \(m_s = 5.568 *10^{30} \ kg\)

The mass of the sun will be "5.568 × 10³⁰ kg".

According to the question,

Planet's mass, M = 7 × 10²⁴ kg

Planet's period, T = 1 Earth year

                             = 365 × 24 × 3600

                             = 3.15 × 10⁷ s

Planet's speed, v = 4200 m/s

Gravitational constant, G = 6.67 × 10⁻¹¹ m³.kg⁻¹.s⁻²

We know the relation,

 T = \(\frac{2 \pi r}{v}\)

or,

    = \(\frac{2 \pi}{v}\times \frac{G\times m_s}{v^2}\)

hence,

The sun's mass be:

\(m_s\) = \(\frac{T\times v^3}{2\times \pi\times G }\)

By substituting the values,

     = \(\frac{3.15\times 10^7\times (42000)^3}{2\times 3.142\times 6.67\times 10^{-11}}\)

     = 5.568 × 10³⁰ kg

Thus the response above is correct.

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Answer:

3.0 x 10 and the exponent on ten is 5.

Explanation:

You are moving the decimal point over to the left 5 times, making the exponent a positive 5 and then you would put a decimal after 3. Making it 3.0 x 10, and the exponent 5.

The speed of x-rays in scientific notation is 3.0 x 10⁶ m/s.

The given parameters;

speed of the x-ray, v = 300,000 m/s

The standard form of the given number represents the scientific notation of the number.

In scientific notation the speed of the x-ray can be expressed as follows;

300,000 m/s = 3.0 x 10⁶ m/s

Thus, the speed of x-rays in scientific notation is 3.0 x 10⁶ m/s.

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Answer:

Below

Explanation:

1st = 3.25

2nd = 4.75

4.75 - 3.25 = 1.5 m/s      so from the first runner's perspective, the second runner is closing the  35 m  gap at 1.5 m/s

Answer:

o Their are more stars in space than there are grains of sand on earth, and more stars are created every day, we just don't see them yet.

Explanation:

I read a lot. use any of the three facts you like. I just thought that I should let you decide which one :)

Answer:

It you get a sushi for work, for a party, then it leads to people being happy, as an independant variable

It is changing the molecular structure of a protein

Explanation:

The speed of the puck is 3.67 m/s.

To find the speed of the puck, we can use the concept of centripetal force. The tension in the string provides the necessary centripetal force to keep the puck moving in a circle. At the same time, the tension in the string also supports the weight of the suspended mass.

Using Newton's second law, we can write two equations of motion: one for the puck and one for the suspended mass. For the puck, the net force acting on it is the tension in the string, which is equal to the centripetal force required to keep it moving in a circle. Thus, we can write:

= m1 * v^2 / R

where T is the tension in the string, v is the speed of the puck, and R is the radius of the circle.

For the suspended mass, the net force acting on it is its weight minus the tension in the string, which must be zero since the mass is in equilibrium. Thus, we can write:

T = m2 * g

where g is the acceleration due to gravity.

Combining these two equations, we can solve for the speed of the puck:

v = sqrt(T * R / m1) = sqrt(m2 * g * R / m1)

Substituting the given values, we get:

v = sqrt(1.0 kg * 9.81 m/s^2 * 0.9 m / 0.21 kg) = 3.67 m/s

Therefore, the speed of the puck is 3.67 m/s.

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The net force on particle q3 will be 327.40 N

Force between two charges = k ( q0 * q1 ) / \(r^{2}\)

where q0 and q1 are charges

r is the distance between them

force between q3 and q2 =  k ( q3 * q2 ) / \(r^{2}\)

                                          = k ( 84.2 * \(10^{-6}\) * 90.6 * \(10^{-6}\) ) / \((0.432)^{2}\)

                                          = k (40150.10 * \(10^{-12}\) )

force between q1 and q3 = k ( q1 * q2 ) / \(r^{2}\)

                                          = k ( 75.8 * \(10^{-6}\) * 90.6 * \(10^{-6}\) ) / \((1.71)^{2}\)

                                          = k ( 3732.37 * \(10^{-12}\) )

net force = force between q3 and q2 -  force between q1 and q3

               = k (40150.10 * \(10^{-12}\) )  - k ( 3732.37 * \(10^{-12}\) )

               = 327.40 N

The net force on particle q3 will be 327.40 N

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Answer:  Work = change in energy which can be calculated by force * displacement so taking this we can multiply 350n by *2m and we can come out with 700 joules

Explanation: I Hope This Helps I'm new at this.

(A) The water will shrink when is heated above 4°C. (B).water at an initial temperature of 33.3°C will be expand by twice as much when it is raised by 1°C compared to water at 30°C.

The anomalous expansion of water refers to the fact that its volume increases upon cooling from 4°C to 0°C, and then contracts upon further cooling to 0°C, and continues to contract upon further cooling. Similarly, when water is heated, its volume first contracts until it reaches 4°C, and then expands upon further heating.

To determine at what temperature water shrinks when heated, we need to find the point at which the coefficient of volume expansion, β, becomes negative. The coefficient of volume expansion is defined as the fractional change in volume per degree Celsius change in temperature, i.e.,

β = (1/V)  (dV/dT)

where V is the volume of the water and dV/dT is the rate of change of volume with respect to temperature.

At temperatures below 4°C, the coefficient of volume expansion is positive, indicating that water expands upon heating. However, at temperatures above 4°C, the coefficient of volume expansion becomes negative, indicating that water contracts upon heating.

Therefore, water will shrink when heated above 4°C.

To determine the initial temperature at which water will expand by twice as much when raised by 1°C, we can use the formula for the coefficient of volume expansion:

β = (1/V)  (dV/dT)

We want to find the initial temperature T such that

(dV/dT)T = 2 (dV/dT)30

where (dV/dT)T is the rate of change of volume with respect to temperature at temperature T, and (dV/dT)30 is the rate of change of volume with respect to temperature at 30°C.

Using the coefficient of volume expansion for water, we have

β = 3α

where α is the coefficient of linear expansion, which is approximately constant for small temperature changes. Therefore, we can write

(dV/dT) = V × 3α

Substituting this into the equation above and simplifying, we get

T = 30 + 10/3 = 33.3°C

Therefore, water at an initial temperature of 33.3°C will expand by twice as much when raised by 1°C compared to water at 30°C.

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Answer:

D. none of them.

Explanation:

This is because Ohm's law is:

Voltage = Current × Resistance

or,

V = IR

Answer: i don’t even no I’m getting my credit up tho

Explanation:

I just need a way to cheat

The engineer must design an engine that can produce a force of over 3,100 Newtons.

A force is an energy that can cause change of motion. It can be a push or a pull. It also has both magnitude and direction, making it a vector quantity.

From the question;

total mass = mass of person + mass of cart

total mass = 80kg + 75kg

total mass = 155kg

acceleration = 20m/s²

The formula to be used;

F = m x a

F = 155kg x 20m/s²

F = 3,100N

In conclusion, the engineer needs a minimum force of 3,100 N in the engine to be able to power the cart.

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Explanation:

Extrusive rocks may have a few grains that are large enough to see, but most of them will be too small to see individual minerals. ... The individual mineral grains are almost too small to see. Some extrusive rocks cool so quickly that they do not form any grains. Instead, they form a natural glass.

Answer:

Forwarded

Explanation:

Answer:

yea

Explanation:

Answer: 317.52

Explanation:

I'm just him, so I just know

Given,

The total energy of the particle, E=-100 J

The potential energy of the particle when it is at x=8.00 cm, P=-600 J

From the graph, the potential energy of the particle when it is at x=2.00 cm, P₀=-200 J

From the law of the conservation of energy, the total energy of the system always remains constant. But the form of the energy may change.

The total mechanical energy is the sum of potential and kinetic energy.

Thus the total energy of the particle is always -100 J

Hence, its total energy when it is at x=2.00 cm is also -100 J

Answer: Distance traveled in time t is s

Explanation: Self Explanatory

The mistakes in the results include options (v) and (vii) which do not follow the five golden rules for reporting results.

The five golden rules for reporting results are:

Using these rules, identify the mistakes in the given results as:

(v) 97.1 × 10³ ± 276Ω - The uncertainty is reported to an inappropriate number of significant figures and the units are not consistent.

(vii) 98.6 × 10³ ± 3 × 10^(-Q) - The uncertainty is not reported to the same number of decimal places as the measured value, and the units are not consistent.

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Answer:

The crowning of Charlemagne by Pope Leo III was significant in a number of ways. For Charlemagne, it was necessary because it encouraged to give him higher reliability. It gave him the rank of a dictator, giving him the only ruler in Europe west of the Byzantine emperor in Constantinople.

In the given case on vectors, the displacements are not equal.

When a particle has gone the least distance, it is referred to as displacement. Both the magnitude and the direction are represented by the vector quantity. Vectors are a type of physical quantity that may be fully represented by both their magnitude and direction. For instance, distance travelled and speed, etc.

A line with an arrow on it is used to symbolise a vector quantity. The physical quantity's size is indicated by the arrow's length, and its direction by the arrow's direction. Given that vector A is longer than vector B, vector A must have a greater magnitude than vector B. These are not equal displacements as a result.

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Complete Question:

Two vectors pointing right starting at the same position. Vector A is on top and longer. Vector B is shorter and below. Are the two displacements equal? Explain your answer.

Explanation:

Water is wet, in the sense of being a liquid which flows easily, because its viscosity is low, which is because its molecules are rather loosely joined together.

Answer:

Liquid water is not itself wet, but can make other solid materials wet.

Wetness is the ability of a liquid to adhere to the surface of a solid, so when we say that something is wet, we mean that the liquid is sticking to the surface of a material.

Whether an object is wet or dry depends on a balance between cohesive and adhesive forces. Cohesive forces are attractive forces within the liquid that cause the molecules in the liquid to prefer to stick together. Cohesive forces are also responsible for surface tension. If the cohesive forces are very strong, then the liquid molecules really like to stay close together and they won't spread out on the surface of an object very much. On the contrary, adhesive forces are the attractive forces between the liquid and the surface of the material. If the adhesive forces are strong, then the liquid will try and spread out onto the surface as much as possible. So how wet a surface is depends on the balance between these two forces. If the adhesive forces (liquid-solid) are bigger than the cohesive forces (liquid-liquid), we say the material becomes wet, and the liquid tends to spread out to maximize contact with the surface. On the other hand, if the adhesive forces (liquid-solid) are smaller than the cohesive forces (liquid-liquid), we say the material is dry, and the liquid tends to bead-up into a spherical drop and tries to minimize the contact with the surface.

Water actually has pretty high cohesive forces due to hydrogen bonding, and so is not as good at wetting surfaces as some liquids such as acetone or alcohols. However, water does wet certain surfaces like glass for example. Adding detergents can make water better at wetting by lowering the cohesive forces . Water resistant materials such as Gore-tex fabric is made of material that is hydrophobic (water repellent) and so the cohesive forces within the water (liquid-liquid) are much stronger than the adhesive force (liquid-solid) and water tends to bead-up on the outside of the material and you stay dry.