An actor has a mass of 70 kg. Gravitational field strength = 9.8 N/kg. Use the following equation to calculate the weight of the actor: Weight = mass × gravitational field strength. Give your answer to two significant figures.

Answer:

kamalong with me to the butter fly and bee

Answer:

um d. but I am guessing this ans

His weight on that planet is about 1000 Newton. The result is obtained by using the formula for gravitational acceleration.

The gravitational acceleration (acceleration due to gravity) can be counted by the following formula.

g = GM/R²

Where

A student weigh 500 N on Earth. He travels to a planet whose mass and radius are twice that of Earth. Find his weight on that planet!

The weight force can be expressed as

W = mg

Let's say

The mass of his weight is constant. So, we get

m = m

W₁/g₁ = W₂/g₂

W₁g₂ = W₂g₁

W₁(GM/R²) = W₂(G2M/(2R)²)

W₁(1/R²) = W₂(2/4R²)

W₁ = W₂(1/2)

2W₁ = W₂

W₂ = 2(500 N)

W₂ = 1000 N

Hence, on that planet, his weight is about 1000 Newton.

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The displacement of the ball rolled down the incline is determined as 0.54 m.

The displacement of an object is the change in the position of the object.

Displacement is a vector quantity and has a direction and magnitude. It is represented as an arrow that points from the starting position to the final position.

The displacement of the ball is calculated as follows;

d = Δx

where;

d = 0.86 m - 0.32 m

d = 0.54 m

Thus, the displacement of the ball rolled down the incline is determined as 0.54 m.

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The complete question is below;

A ball is rolled down an incline from the 0.86 meter mark to the 0.32 meter mark. Find the displacement of the ball.

The rotational kinetic energy in the motorcycle wheel is 1317.6 Joules when its angular velocity is 120 rad/s.

To calculate the rotational kinetic energy of the motorcycle wheel, we need to first find its moment of inertia (I). The wheel can be considered as a combination of two cylinders, one with a radius of R1 and another with a radius of R2.

For a solid cylinder, the moment of inertia can be calculated as I = (1/2) * M * R^2. Let's calculate the moments of inertia for both cylinders:

I1 = (1/2) * M * R1^2 = 0.5 * 12 * (0.280)^2 = 0.4704 kg m^2

I2 = (1/2) * M * R2^2 = 0.5 * 12 * (0.330)^2 = 0.6534 kg m^2

Since the wheel consists of both cylinders, we should subtract the moment of inertia of the inner cylinder (I1) from the outer cylinder (I2) to find the net moment of inertia:

I_net = I2 - I1 = 0.6534 - 0.4704 = 0.183 kg m^2

Now that we have the moment of inertia, we can calculate the rotational kinetic energy (KE) using the formula KE = (1/2) * I * ω^2, where ω is the angular velocity (120 rad/s):

KE = 0.5 * 0.183 * (120)^2 = 0.0915 * 14400 = 1317.6 J

Therefore, the rotational kinetic energy of the motorcycle wheel is approximately 1317.6 Joules.

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Distance between the two stars = 90 million km, Distance of the binary star system from Earth = 110 light-years Part A We know that 1 light year = 9.461 × 10¹² km

Therefore, Distance of binary star system from Earth = 110 × 9.461 × 10¹² km Distance of binary star system from Earth = 1.0407 × 10¹⁴ km Now, Using basic trigonometry, we can find the angular separation:

Angular separation (in radians) = distance between the stars / distance of the binary star system from Earth= 90 × 10⁶ km / 1.0407 × 10¹⁴ km Angular separation (in radians) = 8.65 × 10⁻⁹ radians

Now, We know that 2π radians = 360 degrees. Therefore, Angular separation (in degrees) =

Angular separation (in radians) × 180 / π= 8.65 × 10⁻⁹ radians × 180 / π

Angular separation (in degrees) = 0.00000156 degrees Angular separation (in degrees) = 1.6 × 10⁻⁶ degrees Part B We know that 1 degree = 3600 arcseconds. Therefore,

Angular separation (in arcseconds) = Angular separation (in degrees) × 3600= 1.6 × 10⁻⁶ degrees × 3600

Angular separation (in arcseconds) = 0.0056 arcseconds Angular separation (in arcseconds) = 0.0056" (answer in 2 significant figures)

Hence, the angular separation of the two stars is 1.6 × 10⁻⁶ degrees and 0.0056".

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Answer:gravitational, weak nuclear, electromagnetic, strong

Explanation:

If a musical note has a frequency of 212 Hz and a wavelength of 425 m, its velocity is 90.1 m/s.

The speed of sound is a relationship between frequency and wavelength, mathematically represented as follows:

speed = frequency x wavelength

In this case, the frequency is 212 Hz and the wavelength is 0.425 m. Plugging these values into the equation gives:

speed = frequency x wavelength

speed = 212 Hz x 0.425 m

speed = 90.1 m/s

Therefore, we can affirm that the the speed of the sound of the musical note is 90.1 m/s.

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When the basketball under 2-in diameter Steel ball and dropped from the same height the 2 inch diameter Steel ball will strike the ground first.

In this particular case we are not neglecting the resistance showed by the air.

We know that the resistive force of air is directly proportional to the surface area.

In between basketball and 2 inch diameter Steel ball provided by the basketball is much much greater.

So, the resistive force of air working basketball will be greater than that on the steel ball.

Particle of air will be able to oppose the motion of the basketball which will make the basketball stray for more time in the air.

Difference will not be that much but there will be a time difference.

The Steel ball will reach the ground first because it has a lower surface area then the basketball.

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Answer:

Calculate its momentum. Solution:

Given,

Mass of an object (m)=12kg

Velocity (v)=3m/s

then,

p=36kg m/s

Explanation:

while finding momentum ,we should use the formula p=mv

1. To find the time when the body reaches the ground, we can use the vertical motion equation:

h = v₀y * t + (1/2) * g * t²

where:

h = height of the tower = 15m

v₀y = initial vertical velocity = v₀ * sin(θ) = 30m/s * sin(30°)

g = acceleration due to gravity = 9.8m/s²

t = time

Plugging in the values:

15 = (30 * sin(30°) * t) + (0.5 * 9.8 * t²)

Simplifying the equation:

15 = 15t * 0.5t² + 4.9t²

Combining like terms:

15 = 7.5t² + 4.9t²

Simplifying further:

15 = 12.4t²

Dividing both sides by 12.4:

t² = 15 / 12.4

Taking the square root of both sides:

t = √(15 / 12.4)

Calculating the value:

t ≈ 1.01 seconds

Therefore, the time it takes for the body to reach the ground is approximately 1.01 seconds.

2. To find the displacement vector, we need to calculate the horizontal and vertical components separately.

Horizontal component:

The horizontal displacement can be calculated using the formula:

x = v₀x * t

where:

v₀x = initial horizontal velocity = v₀ * cos(θ) = 30m/s * cos(30°)

t = time is taken to reach the ground (previously calculated as approximately 1.01 seconds)

Plugging in the values:

v₀x = 30m/s * cos(30°)

t = 1.01 seconds

Calculating the value:

v₀x ≈ 26.02 m/s

Vertical component:

The vertical displacement can be calculated using the formula:

y = v₀y * t + (1/2) * g * t²

where:

v₀y = initial vertical velocity = v₀ * sin(θ) = 30m/s * sin(30°)

g = acceleration due to gravity = 9.8m/s²

t = time is taken to reach the ground (previously calculated as approximately 1.01 seconds)

Plugging in the values:

v₀y = 30m/s * sin(30°)

t = 1.01 seconds

Calculating the value:

v₀y ≈ 15 m/s

Now we have the horizontal and vertical components of the displacement vector:

Horizontal component: x ≈ 26.02 m/s

Vertical component: y ≈ 15 m/s

Therefore, the displacement vector of the body is approximately (26.02 m/s, 15 m/s).

3. To find the angle when the body hits the ground, we can use the vertical and horizontal components of the velocity.

The horizontal component of the velocity, v₀x, can be calculated using the formula:

v₀x = v₀ * cos(θ)

where:

v₀ = initial velocity = 30m/s

θ = angle of projection = 30 degrees

Plugging in the values:

v₀x = 30m/s * cos(30°)

Calculating the value:

v₀x ≈ 26.02 m/s

The vertical component of the velocity, v₀y, can be calculated using the formula:

v₀y = v₀ * sin(θ)

where:

v₀ = initial velocity = 30m/s

θ = angle of projection = 30 degrees

Plugging in the values:

v₀y = 30m/s * sin(30°)

Calculating the value:

v₀y ≈ 15 m/s

Now, to find the angle when the body hits the ground, we can use the inverse tangent function:

θ = arctan(v₀y / v₀x)

Plugging in the values:

θ = arctan(15 m/s / 26.02 m/s)

Calculating the value:

θ ≈ 30.96 degrees

Therefore, the angle when the body hits the ground is approximately 30.96 degrees.

4. To find the maximum height, we can use the vertical motion equation:

h = v₀y² / (2 * g)

where:

h = maximum height

v₀y = initial vertical velocity = v₀ * sin(θ) = 30m/s * sin(30°)

g = acceleration due to gravity = 9.8m/s²

Plugging in the values:

h = (30 * sin(30°))² / (2 * 9.8)

Calculating the value:

h ≈ 27.55 meters

Therefore, the maximum height reached by the body is approximately 27.55 meters.

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The spectral line from hydrogen gas near a black hole's event horizon would be visible at a wavelength longer than 656 nm. Gravitational redshift is the term used to describe this phenomenon.

General relativity states that light leaving a gravitational environment, such as one found close to a black hole, undergoes a gravitational redshift. This indicates that the light's wavelength is distorted, giving the impression that it has been shifted towards longer wavelengths.

The observed spectral line would be redshifted in the case presented, when the hydrogen gas close to the event horizon is not travelling in our direction or away from it. As a result, the line would be visible at a wavelength greater than the 656 nm value determined in the lab.

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The two substances that are mostly likely examples of covalent bonding are Sucrose and Ethanol.

Examples of compounds with covalent bond include the following;

Olive oil is a mixture not a compound

Sodium Chloride & Potassium lodide are examples of ionic bond.

Thus, the two substances that are mostly likely examples of covalent bonding are Sucrose and Ethanol.

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Modular product architecture is a design approach that emphasizes the use of standardized components and interfaces to create a range of products with varying features and functions.

The idea is to create a family of products that can be easily customized or adapted to meet the needs of different customers or markets.

Integral product architecture, on the other hand, is a design approach that emphasizes the integration of all components and systems into a single, cohesive whole. The idea is to create a product that is optimized for a specific set of features and functions, and that is designed to work seamlessly and efficiently as a unified system.

The main difference between modular and integral product architecture is the level of flexibility and customization they offer. Modular architecture allows for greater flexibility and customization, as components can be easily swapped in and out to create different variations of a product. Integral architecture, on the other hand, offers less flexibility but is optimized for a specific set of features and functions, and may offer superior performance and efficiency as a result.
Modular product architecture refers to a design approach where individual components or modules can be easily replaced, reconfigured, or combined to create a variety of product variations. This enables flexibility in design and manufacturing, allowing companies to cater to diverse customer needs with minimal design changes.

Integral product architecture, on the other hand, involves a design approach where components are closely integrated and interdependent, making them difficult to modify or replace individually. This results in a more cohesive and optimized product but may limit the ability to customize or adapt the product for different applications.

The key differences between modular and integral product architecture are:

1. Flexibility: Modular architecture offers greater flexibility in design and customization, while integral architecture focuses on optimization and cohesiveness of the product.
2. Interchangeability: Components in modular architecture can be easily interchanged or combined, whereas in integral architecture, components are tightly interconnected and difficult to modify individually.
3. Adaptability: Modular products can be easily adapted for different applications or customer needs, while integral products may have limited adaptability due to their integrated nature.

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Answer:

270 s or 4.5 min

Explanation:

First find the amount of heat needed:

q = mCΔT

q = (1.5 kg) (4200 J/kg/K) (100 − 15) K

q = 535,500 J

q = 535.5 kJ

Power is energy per time.

P = E / t

2 kW = 535.5 kJ / t

t = 270 s

Answer:

1) Use multiple instruments to measure

2) Take several measurements

3) Control the other variables delicately  

4) Be meticulous when measuring

Answer:

a = 5 m / s²   and    x = 562.5 m

Explanation:

Let's apply the kinematics relations

          v = v₀ + at

          v² = v₀² + 2a x

In this case, as the car stops, its final speed is zero (v = 0) and the acceleration must be opposite to the speed, that is, negative

           0 = v₀ - a t

           a = v₀ / t

let's calculate

           a = 75/15

           a = 5 m / s²

let's look for the distance

           0 = v₀² - 2a x

           x = v₀² / 2a

let's calculate

           x = \(\frac{75^2}{2 \ 5 }\)

           x = 562.5 m

The device that detects light in the ultraviolet and infrared spectrums in order to alert occupants to fires is called a Flame Detector.

This device typically uses UV and IR sensors to identify the unique light signatures emitted by flames, allowing it to quickly and accurately detect fires and provide alerts to ensure occupant safety. A flame detector is a sensor created to recognize the presence of a flame or fire and act accordingly, enabling flame detection. Depending on the installation, possible responses to a flame detection include sounding an alarm, turning off a fuel line (such as a propane or a natural gas line), and turning on a fire suppression system.

When employed in industrial furnaces, for example, their purpose is to certify that the furnace is operating properly. They can also be used to turn off the ignition system, however frequently they don't do anything more than alert the operator or control system.

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Answer:

s=105 km/hr

Explanation:

s=speed

d=distance

t=time

s=?

d=420km

t=4hrs

equation: s=d/t

s=420/4

s=105km/hr

Unrequited love is most likely to be experienced by people with the anxious/ambivalent attachment style according to attachment theory.

Attachment theory is a psychological model that explains the dynamics of long-term relationships between humans. It is an important concept in the field of social psychology, personality psychology, and developmental psychology.The attachment style describes the relationship style and pattern between an individual and their romantic partner. There are mainly three attachment styles: avoidant, secure, and anxious/ambivalent. People with anxious/ambivalent attachment style have a high degree of emotional dependence, possessiveness, and a strong desire for closeness to their partner.

However, their insecurity and fear of rejection or abandonment often lead them to act in ways that push their partner away. This may result in unrequited love or a one-sided relationship. People with this attachment style often experience more negative emotions such as anxiety, jealousy, and depression due to their sensitivity to rejection. Hence, unrequited love is most likely to be experienced by people with the anxious/ambivalent attachment style.

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If both masses double in size and their separation between them triples. 13..33 N will be the force between the masses.

Newton's law of gravity states that each particle having mass in the universe attracts each other particle with a force known as the gravitational force.

Gravitational force is proportional to the product of the masses of the two bodies and inversely proportional to the square of their distance.

Given data:

The gravitational force = 30 N

Mass 1 =m₁

Mass 2=m₂

Distance between charges = R

Condition given:

Mass 1 = 2m₁

Mass 2= 2m₂

Distance  between charges = 3R

\(\rm F = \frac{Gm_1m_2}{R^2}\)

Case 2;

\(\rm F'=\frac{G(2m_1)(2m_2)}{(3R)^2} \\\\ F'=\frac{4}{9} \frac{Gm_1m_2}{R^2} \\\\ F'=\frac{4}{9} F \\\\ F'=\frac{4}{9} \times 30 \\\\ F'=13.33 \ N\)

Hence, the forces between the masses will be 13..33 N.

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Answer:

La fuerza que se ejerce entre las dos cargas es 2880 N.

Explanation:

La ley de Coulomb indica que los cuerpos cargados sufren una fuerza atractiva o repulsiva al acercarse. La fuerza es atractiva si las cargas son del signo opuesto y repulsión si son del mismo signo. El valor de la fuerza es proporcional al producto del valor de sus cargas e inversamente proporcional al cuadrado de la distancia que los separa. Esto se expresa matemáticamente como:

\(F=k*\frac{Q*q}{r^{2} }\)

donde:

En este caso:

Reemplazando:

\(F=9*10^{9} \frac{N*m^{2} }{C^{2} }*\frac{4*10^{-5} C*2*10^{-5}C }{(0.05 m)^{2} }\)

F= 2880 N

La fuerza que se ejerce entre las dos cargas es 2880 N.

Answer:

5 years worth of work (aka all of the homework i currently have)

Billy jumps upward with a velocity of 4.2 m/s off a 6m high diving board.  . Billy will take 0.43 sec  to hit the water

The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics.

using equation of kinematics

v = u + g*t

sign convention

positive y direction (upward) = +

negative y direction ( downward )  = -

v = u - g*t

0 = 4.2 - ( 9.8 * t )

t = 4.2 / 9.8

t = 0.43 sec

Billy will take 0.43 sec  to hit the water

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Answer:

inertia

Explanation:

Option B: The pressure in the neck is equal to the pressure in the knee because of the equal dynamic pressure according to the continuity equation is the answer.

Assuming that the human circulatory system obeys Bernoulli's principle of hydrodynamics, the most accurate comparison of blood pressure in capillaries in the neck and those of equal cross-sectional area in the right knee yields: The neck pressure equals the knee pressure with the same dynamic pressure according to the continuity equation. The Bernoulli equation describes the flow of an incompressible fluid in a pipe and how that flow is affected by changes in pressure. 

In this case, it can be applied to the flow of blood through capillaries in the neck and right knee. The continuity equation, which states that the volume flow rate of fluid through a tube must remain constant, regardless of changes in the tube's cross-sectional area or shape, can also be applied in this case. Because the two capillaries have the same cross-sectional area, the dynamic pressure in both capillaries must be the same because of the continuity equation. This indicates that the pressure in the neck is equal to the pressure in the knee.

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The focal length of the concave mirror is -37cm.To find the focal length of the concave mirror, we need to apply the mirror formula. The formula is: 1/f = 1/v + 1/u

Where f is the focal length, v is the image distance, and u is the object distance. According to the sign conventions, u is negative because the object is in front of the mirror, and v is negative because the image is formed behind the mirror. We are given u = -37cm and R = -22cm (since the mirror is concave), so we can find the image distance using the relation:

1/f = 1/v - 1/R
1/f = 1/-37 - 1/-22
1/f = -0.027
f = -37c

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The work done by the engine during the isothermal expansion is -7460 J. Note that the negative sign indicates that work is done on the gas by the engine, as the gas is expanding against the external pressure.

During an isothermal expansion, the temperature of the ideal gas remains constant.

Therefore, the ideal gas law: PV = nRT

Since the temperature remains constant: \(P_1V_1 = P_2V_2\)

We can solve for the final pressure \(P_2\) as: \(P_2\) = \(P_1(V_1/V_2)\)

We can simplify this equation to:

W = -P∫dV

W = -P(\(V_2 - V_1\))

Substituting expression :

W = \(-P_1(V_1/V_2)(V_2 - V_1)\)

W = -nRT ln(\(V_2/V_1\))

Plugging in the values :

W = -(1 mol)(8.314 J/mol·K)(344 K) ln(47.7 L/23.9 L)= -7460 J

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--The complete Question is, What is the work done by the engine during the isothermal expansion of 1 mol of an ideal gas from 23.9 L to 47.7 L at a constant temperature of 344 K?--

Answer:

The correct option is (c) "it bounces the light towards a focal point"

Explanation:

There are two types of spherical mirrors i.e. concave and convex.

A concave mirror is a type of spherical mirror that is curved inwards. For this type of mirror the rays of light are bounced back and converge to the focal point of the mirror.

So, the correct option is (c).

Answer:

c

Explanation:

Answer: A Neutron.

I know this is correct. Thank's and yw :3