to get a flat uniform cylindrical satellite spinning at the correct rate, scientists fire 4 tangential rockets. suppose that the satellite has a mass of 3600 kg and a radius of 4m, and that the rockets each add a mass of 250 kg. what is the steady force required of each rocket if the satellite is to reach 32 rpm in 5 min starting from rest.

Answer:

43.43

Explanation:

5.746 x 7.56 = 43.43976

As the least number of desimal is two so our awnser should contain two digits after the decimal point.

Ans: 43.43.

Answer:

43.4 (Plato/Edmentum)

Explanation:

#1: 7.56 * 5.746

#2: 43.43976

#3: 43.4

Explanation:

1) This is a synthesis reaction (two or more reactants combine to form a single product).

2) The coefficients are added to balance the reaction.

3) Adding the states of matter (solid, liquid, gas) will make the reaction more precise.

Answer:

A.

Explanation:

it's needed top release energy due to the breaking of chemical bonds.

Answer:

A: the ice releases energy which causes chemical bonds to break, changing the water to ice.

Explanation:

Answer:

Rate of dissolving compounds:

If we increase the temperature of the solution, then the dissolving compound would dissolve more easily.

Boiling Point of Compounds:

If the inter-molecular forces of any compound is really strong, then the boiling point of the compound would be really high.

Answer: This is just re worded from the other answer to give a different saying to the responce.

Record your hypothesis as an “if, then” statement for the rate of dissolving the compounds: If we increase the temperature then the compound will dissolve easier. 

Record your hypothesis as an “if, then” statement for the boiling point of the compounds: If the forces of the compound itself is strong, then the boiling point would be way higher.

Answer:

13.3cm ≈ 13cm

Explanation:

The following data were obtained from the question:

Magnification (M) = 2

Distance between image and object = 60cm

Focal length (f) =..?

Next, we shall determine the image distance (v) and the object distance (u). This can be obtained as follow:

Magnification (M) = image distance (v) / object distance (u)

M = v/u

Magnification (M) = 2

2 = v/u

Cross multiply

v = 2u

From the question,

Distance between image and object = 60cm i.e

v + u = 60

v = 2u

2u + u = 60

3u = 60

Divide both side by 3

u = 60/3

u = 20cm.

v = 2u = 2 x 20 = 40cm

Now, we can obtain the focal length of the lens as follow:

1/f = 1/v + 1/u

u = 20cm.

v = 40cm

1/f = 1/v + 1/u

1/f = 1/40 + 1/20

1/f = (1 + 2)/40

1/f = 3/40

f = 40/3

f = 13.3cm ≈ 13cm

Therefore, the focal lenth of the lens is 13.3cm ≈ 13cm

Answer:

Volts itself is SI Unit of Electric Potential.

Explanation:

Answer:

8 N

Explanation:

Using the equation F=ma (F: force/ m: mass  in kg/ a: acceleration),

F = (800/1000)(10)

F = 8 N

Answer:

Explanation:

According to Snell's law, the ratio of the sine of angle of incidence to the sine of angle of refraction is a constant for a given pair of media. The constant is known as the refractive index.

Mathematically [tex]\frac{sin i}{sin r} = n[/tex]

i = angle of incidence measured = 63.5°

r = angle of refraction measured = 32°

n = refractive index

[tex]n = \frac{sin 63.5^{0} }{sin 32^{0} } \\n = \frac{0.8949}{0.5299}\\ n = 1.69[/tex]

The index fraction calculated is approx. 1.69.

If the index of refraction of a clear plastic as listed in the book is 1.89 and the calculated is 1.69, the percentage error will be calculated as thus;

%error = [tex]\frac{1.89-1.69}{1.89} * 100[/tex]

%error = [tex]\frac{0.2}{1.89}*100[/tex]

%error  = [tex]\frac{20}{1.89}[/tex]

%error  = 10.58%

Answer:

(C)

Explanation:

Because the photons being different makes them have different amounts of energy, they both with have a precise and different energy from each other.

Answer:

p =  17500 kg*m/s

Explanation:

p = mv

p = 35.0 kg * 500.0 m/s = 17500 kg*m/s

The momentum of a 35.0 kg cannonball fired from a cannon with a velocity of 500.0 m/s will be equal to 17500 [tex]\dfrac{kg.m}{s}[/tex]

When any body which is having a mass and is in the motion carry momentum with it.

The formula for finding the momentum of any body is given by

[tex]Momentum = Mass\times Velocity[/tex]

Given that-

[tex]Mass = 35 kg[/tex]

[tex]Velocity = 500[/tex]  [tex]\dfrac{m}{s}[/tex]

[tex]Momentum = 35\times500[/tex]

[tex]momentum= 17500 \dfrac{kg.m}{s}[/tex]

Hence The momentum of a 35.0 kg cannonball fired from a cannon with a velocity of 500.0 m/s will be equal to 17500 [tex]\dfrac{kg.m}{s}[/tex]

To learn more about Momentum follow

https://brainly.com/question/1042017

Answer:

Force x time = Impulse which is a change in momentum. You can then use this to find the velocity (as you know the ball's initial momentum is 0)

1500 x 1.8 x 10^-3 = 0.045v

v = (1500 x 1.8 x 10^-3)/0.045 = 60 ms^-1

Explanation:

The distance the ball travels is directly related to the force that is applied from the head of the golf club, the angle at which the force is applied, gravity, as well as air and wind resistance. The force of the club head on the ball causes the ball to compress and apply an equal amount of force on the club.

use ke=1/2mv^2 rearrange for V

The golf club is in contact with the golf ball for 1.8 ms and exerts a force of 1500 N on the golf ball. The mass of the golf ball is 0.045kg then the velocity of the golf ball as it leaves the golf club. Velocity 60 m/s

Velocity can be defined as the rate at which the change in the position of the object with respect to time, it is mainly involve in speeding of the object in a specific direction.

Velocity is a vector quantity which shows both magnitude  and direction  and The SI unit of velocity is meter per second (ms-1), the change in magnitude or the direction of velocity of a body is said to be accelerating.

Finding the final velocity is simple but few calculations and basic conceptual knowledge are needed.

For more details regarding velocity, visit

brainly.com/question/12109673

#SPJ2

Answer:

No, gravitational force is a force having infinite range. It only reduces to an extent that astronauts cannot feel it.

Explanation:

Answer: [tex]-\frac{1}{2}\times \frac{d[Br^.]}{dt}=+\frac{d[Br_2]}{dt}[/tex]

Explanation:

Rate of a reaction is defined as the rate of change of concentration per unit time.

Thus for reaction:

[tex]2Br^.\rightarrow Br_2[/tex]

The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.

[tex]Rate=-\frac{d[Br^.]}{2dt}[/tex]

or [tex]Rate=+\frac{d[Br_2]}{dt}[/tex]

Thus [tex]-\frac{d[Br^.]}{2dt}=+\frac{d[Br_2]}{dt}[/tex]

Answer:

the unit must always be indicated

Explanation:

displacement is alway in metre (m)

Answer:

A: measurement and direction

Explanation:

on edge! hope this helps!!~ (≡^∇^≡)

Answer:

a) 16 N

b) 2.13 m/s²

Explanation:

Draw a free body diagram of the tv stand.  There are four forces:

Weight force mg pulling down,

Normal force N pushing up,

Friction force Nμ pushing left,

and applied force P pulling right.

Sum of forces in the y direction:

∑F = ma

N − mg = 0

N = mg

The net force in the x direction is:

∑F = P − Nμ

∑F = P − mgμ

∑F = 25 N − (7.5 kg) (10 m/s²) (0.12)

∑F = 16 N

Net force equals mass times acceleration:

∑F = ma

16 N = (7.5 kg) a

a = 2.13 m/s²

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the FRICTION.

Force by Xavier = 25 N

Force of friction in the opposite direction of Xavier = f = umg

where, u = coefficient of kinetic friction.

so we here get as ,

Net force = 16 N

and acceleration = 2.13 m/s^2

Answer:

0.144 J

Explanation:

From the question above,

Total elastic energy of the spring = Kinetic energy of the spring + potential energy of the spring

E' = E.k+Ep...................... Equation 1

Ek = E'-Ep......................... Equation 2

Where E' = total elastic energy, E.k = kinetic energy, E.p = potential  energy.

E'  = 1/2ke² = 1/2(26.6)(0.12²) = 0.19152 J.

Ep = 1/2ke² = 1/2(26.6)(0.06²)

Ep = 0.04788 J

Therefore,

Ek = 0.19152-0.04788

Ek = 0.144 J

I just realized my answer was incorrect but I don’t know how to delete an answer.

Answer:

Femoroacetabular impingement

It occurs when an area of your hip joint becomes pinched when you move in certain directions. :)

Answer:

World Wrestling Entertainment, Inc., d/b/a WWE, is an American integrated media and entertainment company that is primarily known for professional wrestling. WWE has also branched out into other fields, including movies, football, and various other business ventures.

Answer:

This means WORLD WRESTLING ENTERTAINMENT.

Explanation:

This is an american integrated media and entertainment company that is primarily known for PROFESSIONAL WRESTLING.

Answer:

Over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart, forming the continents as they are known today.

Explanation:

i took the active

Answer:

the continents were once connected as one landmass.

Explanation:

right on edge 2022

Answer:

The net force acting on the person is 5.34 N acting upwards

Explanation:

The information given are;

Mass of the person = 55.0 kg

Density of the person = 1010 kg/m³

Body volume of the person = Mass/Density = 55/1010 = 0.0545 m³

Weight of the person = Mass × Gravity = 55 × 9.81 = 539.55 N↓

Where the density of water = 1000 kg/m³, we have;

Upthrust = weight of the water displaced = Mass of the water displaced × Gravity

Mass of the water displaced = Density of water × Volume of the water

Mass of the water displaced = Density of water × Body volume of the person

                                                = 1000 × 0.0545 = 54.5 kg

The Upthrust = 54.5 × 9.81 = 534.21 N↑

Given that the net force, [tex]F_{Net}[/tex] acting is the sum of the mass of forces acting  on the person which are the weight acting downward and the upthrust acting upwards

We have;

F(Net) = 534.21↑ - 539.55↓ = 5.34 N↑

The net force acting on the person = 5.34 N upwards.

Answer:

-5.34

Explanation:

it says specifically to watch your sign

Answer:

Statement 2 is wrong

Explanation:

To check the statements in this exercise, let's describe the main properties of electromagnetic waves. Let's describe the characteristics

* they are transverse waves

* formed by the oscillations of the electric and magnetic fields

* the speed of the wave is the speed of light

with these concepts let's review the final statements

1) True. Formed by the oscillation of the two fields

2) False. They are transverse waves

3) True. Can travel by vacuum as they are supported by oscillations of the electric and magnetic fields

4) True. They all have the same speed of light

Statement 2 is wrong

Answer:

The black lines represent the energy absorbed by the electrons.

Explanation:

Atoms emit lights when they are excited. These lights are of particular wavelengths that match with different colors. A series of colored lines appear along with spaces in the middle of the two colors. The middle of the colors is filled with dark spaces. Each spectral line of an element represents a specific characteristic of the element. These colored lines appearing in the form of series are termed to be the atomic spectrum of the element. Identification of the elements is done through the line of the spectrum they possess.

Answer:

(B) The black lines represent the energy absorbed by the electrons.

Explanation:

Answer:

Time, t = 3.2 ms

Explanation:

It is given that,

Mass of basketball, m = 0.622 kg

Initial velocity, u = 4.23 m/s

Final velocity, v = 3.85 m/s

Average force acting on the ball, F = 72.9 N

We need to find the time of contact of the ball with the floor. Let t is the time of contact. So,

[tex]F=ma\\\\F=\dfrac{m(v-u)}{t}\\\\t=\dfrac{m(v-u)}{F}\\\\t=\dfrac{0.622\times (3.85-4.23)}{72.9}\\\\t=0.0032\ s\\\\\text{or}\\\\t=3.2\ ms[/tex]

So, the ball is in contact with the floor for 3.2 ms.

Answer: 100 Pa

Explanation:

P = F / A = 200/ 2 = 100 Pa

Answer:

100 Pa

Explanation:

Pressure = Force/Area

P = 200/2

P = 100

The SI unit is Pa for pressure, one newton per square meter N/m².

Answer:

1 angstrom = 0.1nm

5000 angstrom = 5000/1 × 0.1nm

[tex]1 \: angstrom = 1 \times {10}^{ - 10} m[/tex]

5000 angstrom = 5000 × 1 × 10^-10

Hope this helps you

Answer:

High current flow

Explanation:

Generally , the measuring instruments used by technician also have some resistance, though its value is very low  . So when high current is present in the circuit , that current also passes through the instrument which creates a good potential drop across the instrument . So the external voltage used in the circuit measures less voltage .

Answer:

503°C

Explanation:

According to the given situation, the computation of the final temperature is shown below:

In this question we use the law of ideal gas i.e

pV = nRT

i.e

[tex]\frac{p_1V_1}{T_1} = \frac{p_2V_2}{T_2}[/tex]

Therefore

[tex]T_2 = T_1 (\frac{p_2}{p_1}) (\frac{V_2}{V_1})[/tex]

[tex]= 300\ k (\frac{2.72 \times 10^{6} Pa + 1.01 \times 10^{5} Pa}{1.01 \times 10^{5} Pa})(\frac{46.2 cm^3}{499 cm^3})[/tex]

= 776 k

= (776  - 273)° C

= 503°C

Therefore the final temperature is 503°C

We simply applied the above formulas so that the final temperature could arrive

Answer:

The correct option is;

A. The component of the woman's weight along the hillside is larger than the kinetic friction between the woman and the ground

Explanation:

Given that the coefficient of static friction is always larger than the coefficient of kinetic friction, we have that before the wind blew, the component of the woman's weight along the hillside was lesser than the static friction between  the woman and the ground, when the wind blew the total force of the wind and the component of the woman's weight put her into motion such that the acting frictional force was then the kinetic frictional force which was lesser than the kinetic frictional force so the woman continues to slide down the hillside without the wind.

Answer:

a. 9.52 cm b. 4.34 × 10⁶ m/s

Explanation:

a. The horizontal distance traveled by the electron when it hits the plate.

The electric force F on the electron due to the electric field E of mass, m is

F = -eE = ma

a = -eE/m where a = acceleration of electron

The vertical distance moved by the electron is given by

Δy = ut +1/2at²

u = initial vertical velocity = 0. and take the top plate as y = 0 and bottom plate as y

So,

0 - y = 0 × t + 1/2at²

-y = 1/2at²

substituting a = -eE/m

-y = 1/2(-eE/m)t²

y = eEt²/2m

making t subject of the formula,

t = √(2ym/eE) where t is the time it takes to reach the bottom plate.

Since E = 4.0 × 10² N/C, y = distance between plates = 2.0 cm = 0.02 m, m = 9.109 × 10⁻³¹kg and e = 1.602 × 10⁻¹⁹ C

t = √[(2 × 0.02 m × 9.109 × 10⁻³¹kg)/(1.602 × 10⁻¹⁹ C × 4.0 × 10² N/C)]

t =  √[(0.36436 × 10⁻³¹kgm)/(6.408 × 10⁻¹⁷ N)]

t = √[(0.0569 × 10⁻¹⁴kgm/N)t

t = 0.238 × 10⁻⁷ s

t = 23.8 × 10⁻⁹ s

t = 23.8 ns

The horizontal distance moved when it hits the plates x = vt where v = initial horizontal velocity = 4.0 × 10⁶ m/s

x = 4.0 × 10⁶ m/s × 23.8 × 10⁻⁹ s

= 0.0952 m

= 9.52 cm

b. The velocity of the electron as it strikes the plate.

To find the velocity of the electron as it strikes the plates, we calculate its final vertical velocity V as it strikes the plate. This is gotten from

v' = u + at since u = 0,

v' = at

= -eEt/m

= -(1.602 × 10⁻¹⁹ C × 4.0 × 10² N/C × 0.238 × 10⁻⁷ s)/9.109 × 10⁻³¹kg

= -1.525 × 10⁻²⁴ Ns/9.109 × 10⁻³¹kg

= -0.167 × 10⁷ m/s

= -1.67 × 10⁶ m/s

So, the resultant velocity as it strikes the plate v = √(v'² + v²)

= √((-1.67 × 10⁶ m/s)² + (4 × 10⁶ m/s)²)

= √(2.7889  + 16) × 10⁶ m/s

= √18.7889 × 10⁶ m/s

= 4.335 × 10⁶ m/s

≅ 4.34 × 10⁶ m/s