Weight and mass are different because,

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of options. However, Astronauts working in space do not have any external force acting upward or downward on them; meaning there is no contact force pushing or pulling there body and thus experience/feel weightlessness. This causes them to be in a state of constant free fall when they are orbiting the earth. This free fall is similar to what is experienced in elevators and roller coasters in amusement parks.

Answer:

The statement is not correct.

Explanation:

To know if the statement is correct, we shall determine the velocity of the car after 3 s. This is illustrated below.

Data obtained from the question include:

Initial velocity (u) = 0 m/s

Acceleration due to gravity (g) = 9.8 m/s²

Time (t) = 3 s

Final velocity (v) =?

v = u + gt

v = 0 + (9.8 × 3)

v = 0 + 29.4

v = 29.4 m/s

Thus, the velocity of the car after 3 s is 29.4 m/s.

Hence, the statement made by the friend is not correct as the car has a falling velocity of 29.4 m/s after 3 s.

Answer:

Explanation:

“The Sound of Thunder” is set in the year 2055. Time Safari, Inc. offers time-travel opportunities to hunt and kill exotic and now-extinct animals. In the hunt described in the story, the team of two guides and three hunters goes back to prehistoric days in order to kill the largest dinosaur of them all, a Tyrannosaurus rex. The business has already put safety precautions into place so that these trips can be made without unduly impacting the future. The animals that are killed are ones that have already been identified as doomed. For example, the T rex in question was going to be killed by a falling tree anyway. The safari leaders also built a path for visitors to step on so that no element of the past setting is tampered with. Even the slightest misstep could have implications for the future.

Answer:

268N

Explanation:

The upward force acting on the block are the reaction and the hooked table..

The total normal force acting = normal reaction + 24N

Note that the normal reaction is always equal the weight of the table

Hence the normal force acting in the block is 244.0+24 = 268.0N

Answer:

20 N

Explanation:

From the question given above, the following data were obtained:

Mass (m) of aquarium = 40 kg

Acceleration (a) = 0.50 m/s²

Force (F) =?

Force is simply defined as the product of mass and acceleration. Mathematically, it is expressed as:

Force (F) = mass (m) × acceleration (a)

F = m × a

With the above, we can obtain the force needed to slide the aquarium as follow:

Mass (m) of aquarium = 40 kg

Acceleration (a) = 0.50 m/s²

Force (F) =?

F = m × a

F = 40 × 0.5

F = 20 N

Therefore, a force of 20 N is needed to slide the aquarium.

Answer:

0.1667 m/s

Explanation:

m1V1 + m2V2 = m1V3 + m2V4

0.01 = ( 0.0075) + (0.015 * V4)

V4 = (0.01 - 0.0075) / (0.015)

V4= 0.1667

Answer:

0.167 m/s

Explanation:

Answer:

32kg

Explanation:

Given parameters:

Speed of the dog  = 3.8m/s

Kinetic energy  = 231.04J

Unknown:

Mass of Mr.Plamer's dog = ?

Solution:

Kinetic energy is the energy due to the motion of a body;

Mathematically, it is represented as;

      K.E  = [tex]\frac{1}{2}[/tex] m v²

  m is the mass

  v is the velocity

Insert the parameters and solve;

        231.04  = [tex]\frac{1}{2}[/tex]  x m x 3.8²

        231.04 x 2  = 2 x  [tex]\frac{1}{2}[/tex]  x m x 3.8²

           462.08  = 14.44m

               m  = 32kg

it will take the car 5 seconds to stop

Answer:

8

Explanation:

Groups go down, periods go across :)

Answer:

16.6N

Explanation:

Given parameters:

Mass of rocket  = 2000g  = 2kg

Acceleration  = 8.3m/s²

Unknown:

Force acting on the rocket  = ?

Solution:

The force acting on a body can be derived from the product of its mass and acceleration;

  Force  = mass x acceleration

Insert the parameters and solve;

  Force  = 2 x 8.3  = 16.6N

Answer:

It would be option B.

Explanation:

Option B. is the right answer because as the mass of the canon increases the kinetic energy will increase as well, but the will decrease due to its greater mass.

If the mass of the cannonball increases, and all other initial conditions stay the same,  the velocity decreases, and the kinetic energy increases.

The kinetic energy of an object is the energy possessed by the object due to its motion.

[tex]K.E = \frac{1}{2} mv^2[/tex]

where;

When the mass increases, the kinetic energy will increase.

[tex]v^2 = \frac{2K.E }{m}\\\\v=\sqrt{\frac{2K.E }{m}}[/tex]

when the mass increases, the velocity of the cannonball will decrease.

Thus, we can conclude that if the mass of the cannonball increases, and all other initial conditions stay the same,  the velocity decreases, and the kinetic energy increases.

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Answer:

hello your question lacks some data and required diagram

G = 77 GPa,  т all = 80 MPa

answer : required diameter = 252.65 * 10-^3 m

Explanation:

Given data :

force ( P )  = 660 -N force

displacement = 15 mm

G = 77 GPa

т all = 80 MPa

i) Determine the required diameter of shaft BC

considering the vertical displacement ( looking at handle DC from free body diagram )

D' = 0.3 sin∅  ,   where D = 0.015

hence ∅ = 2.8659°

calculate the torque acting at angle ∅  of  CD on the shaft BC

Torque = 660 * 0.3 cos∅

             = 660 * 0.3 * cos 2.8659 = 198 * -0.9622 = 190.5156 N

hello attached is the remaining part of the solution

The required diameter of shaft BC will be 252.65 ×10⁻³A shaft's diameter is the line that goes through its center and splits it into two equal halves.

A diameter is a line that travels through the center of a sphere and intersects the circumference at opposing ends. It measures twice as long as the sphere's radius

The given data in the problem is;

P is the force = 660 N

d is the displacement = 15 mm

G is the constant= 77 GPa

τ is the shear stress= 80 MPa

From the torsional equation;

[tex]\frac{\tau}{R} =\frac{T}{j} \\\\ \frac{\pi}{32} \times d^4=\\\\ \tau =\frac{T \times R}{J} \\\\\ \tau =\frac{T \times (\frac{d}{2} )}{J} \\\\ 80= \frac{32 \times 190 \times \frac{d}{2} }{\pi} \\\\\\d=252.65 \times 10^{-3}[/tex]

Hence the required diameter of shaft BC will be 252.65 ×10⁻³.

To learn more about the diameter refer to the link;

https://brainly.com/question/5501950

Answer:

A

Explanation:

Conserving energy produces a higher quality of life. Reduced emissions result in cleaner air quality. In addition, it helps create a healthier planet, or at least helps sustain the resources we already have

Explanation:

The graph of a linear equation forms a straight line, whereas the graph for a non-linear relationship is curved. ... A non-linear relationship reflects that each unit change in the x variable will not always bring about the same change in the y variable

Answer:

Fortunately, the potential for higher energy efficiency is great. ... For example, landlords of rental residential buildings are not motivated to pay for ... it over time, and the timeframes in which specific technologies can be expected to ... especially for small firms, and many industries prefer to expend their human and financial.    

4 Energy Efficiency | America's Energy Future: Technology. this is a site

Explanation:

Answer:

the car industry is one of the most important industry in the world as it aid easy transportation of goods and man.

Explanation:

cars and other automobiles have aid easy movement of people and goods from one place to another as it is more efficient (does not waste time as compared to traditional means of transportation.)and reliable.

Answer:

[tex]\boxed {\boxed {\sf 80 \ Newtons}}[/tex]

Explanation:

Force can be found by multiplying the mass by the acceleration.

[tex]F=m*a[/tex]

The mass of the pumpkin is 40 kilograms.

The acceleration of the pumpkin is 2 meters per second squared.

[tex]m= 40 \ kg \\a= 2 \ m/s^2[/tex]

Substitute the values into the formula.

[tex]F= 40 \ kg *2 \ m/s^2[/tex]

Multiply.

[tex]F= 80 \ kg*m/s^2[/tex]

A kilogram meter per second squared is equal to 1 Newton. Therefore, our answer of 80 kg*m/s² is also equal to 80 Newtons (N).

[tex]F=80 \ N[/tex]

The force is 80 Newtons.

Answer:

80 newton

Explanation:

F=ma so we now substitute our values I. E 40kg*2m/s=80 Newton

Answer:

91.21

Explanation:

Kinetic energy =1/2 mv2 substitute the values I. E 1/2 *1 *4.5^2= 91.21

Answer:

[tex] \huge{ \boxed{ \sf{1.74 \: kg}}}[/tex]

☯ Question :

☯ [tex] \underbrace{ \sf{Required \: Answer: }}[/tex]

☥ Given :

☥ To find :

✎ We know :

[tex] \boxed{ \sf{net \: force = mass \: \times \: acceleration}}[/tex]

Substitute all the values and solve for m

➛ [tex] \sf{124.0 = mass \times 71.0}[/tex]

➛ [tex] \sf{71.0 \: mass = 124.0}[/tex]

➛ [tex] \sf{ \frac{71.0 \: mass}{71.0} = \frac{124.0}{71.0}} [/tex]

➛ [tex] \sf{mass = 1.74 \: kg}[/tex]

Hope I helped!

Have a wonderful time ツ

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Answer:

Explanation:

The law of conservation of mass states that the mass of the elements at the beginning of the reaction(reactants) will equal the mass at the end of the reaction (product) .

In the chemical equation above,the total mass of the reactants is 80g(16+64) and the total mass of the products is also 80g(44+36).therefore the mass remained constant and that's how the equation represents the law of conservation of mass

Answer:

his is an example of the transformation of gravitational potential energy into kinetic energy

Explanation:

The game of juggling bowling is a clear example of the conservation of mechanical energy,

when the bolus is in the upper part of the path mechanical energy is potential energy; As this energy descends, it becomes kinetic energy where the lowest part of the trajectory, just before touching the hand, is totally kinetic.

At the moment of touching the hand, a relationship is applied that reverses the value of the speed, that is, now it is ascending and the cycle repeats.

Therefore this is an example of the transformation of gravitational potential energy into kinetic energy

Answer:

10 m/s²

Explanation:

Force is the product of mass of an object and its acceleration

The formula is : F= m*a  -----where m is mass and a is acceleration

Use the values given in the equation as;

F= m*a

1000 = 100 * a

1000/100 = a

10 = a

10 m/s² = a

Answer:

snow or rain

Explanation:

i know it has to be some kind of water , but I just don't know which one sadly . hope this helped :) !

Answer:

dust . i did this

Explanation:

Answer:

1.5 m/s^2

Explanation:

a = velocity/time

27/18 = 1.5 m/s^2

Answer:

Increase gas pressure and decrease gas temperature

Explanation:

To Create a lab simulation whereby the changes in pressure exerted on the gas will affect the volume of the gas volume negatively ( decrease in gas volume ) the changes that Juana should program is to increase the pressure on the gas molecules because increase in gas pressure  = decrease in gas volume while increase in temperature will lead to increase in gas

Hence in order to effectively achieve the decrease in gas volume with the lab simulation; she should increase gas pressure and decrease gas temperature

Answer:

pressure then volume

Explanation:

edge chemistry 2021

Answer:

it is the 3rd one

Explanation:

If an object falls freely, then heavy objects accelerate nearly the same as light objects.

Answer:

D) .35

Explanation:

m = Mass of block

g = Acceleration due to gravity = [tex]10\ \text{m/s}^2[/tex]

[tex]\theta[/tex] = Angle of inclination = [tex]30^{\circ}[/tex]

a = Acceleration of block = [tex]2\ \text{m/s}^2[/tex]

[tex]\mu[/tex] = Coefficient of friction between the block and the inclined plane

f = Frictional force = [tex]\mu mg\cos\theta[/tex]

As the forces are conserved in the system we have

[tex]mg\sin\theta-f=ma\\\Rightarrow mg\sin\theta-\mu mg\cos\theta=ma\\\Rightarrow g(\sin\theta-\mu\cos\theta)=a\\\Rightarrow \sin30^{\circ}-\mu\cos30^{\circ}=\dfrac{2}{10}\\\Rightarrow \dfrac{1}{2}-\mu\dfrac{\sqrt{3}}{2}=0.2\\\Rightarrow \mu=\dfrac{\dfrac{1}{2}-0.2}{\dfrac{\sqrt{3}}{2}}\\\Rightarrow \mu=\dfrac{0.3\times 2}{\sqrt{3}}\\\Rightarrow \mu=0.3464\approx 0.35[/tex]

The coefficient of friction between the block and the inclined plane is 0.35

Answer:

1.matter made of mass and volume

2.matter is any substance that has mass and takes up a space by having a volume

3.table, coffee, and perfume

4.solid has a strong bonds, liquid has weak bond, and gas no bond

5

Answer:

Its A

Explanation:

To reduce the strength of an electromagnet, Juan must  reduced the number of loops in the wire.

The strength of an electromagnetic is the effect or force that an electromagnet exerts in a given field.

The strength of an induced emf in a given magnetic field is given by;

emf = NBA/t

where;

Decrease in number of turns of the wire, reduces the strength of the magnetic field.

Thus, to reduce the strength of an electromagnet, Juan must  reduced the number of loops in the wire.

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