A physics student solving a physics problem has obtained the following four equations that describe the physics of a system of masses connected:

1. m2 = 3m1
2. --mig cosθ + T= miai
3. a1 = a2
4. m2g-T=m2a2

where g = 9.80 meter/ second^2 and θ = 60° are knowns, and mı, m2, a1, a2, and T are unknowns.

a. The problem requires the student to evaluate which are the unknowns that the student would like to eliminate from the equations?
b. The student decides to eliminate the unknown m2. Which two of the equations can be used to eliminate m2?

Answers

Answer 1

Answer: m1, m2, a1, T

Explanation:


Related Questions

efficincy of simple machine is 60% what does it mean?

Answers

Explanation:

By the statement, Efficiency of a machine is 60% it is meant that 'The work output is 60% of the work input'. If you apply 100J of energy for a machine, it will be able to life load of 60 J only

A rock is dropped from a cliff, how far does it drop in 1.4 seconds?
What is the speed of a rock dropped from a cliff after 2.7 seconds?

Answers

Answer:

Explanation:

1) either all the way to the ground, or, if the cliff is high enough,

h = ½(9.8)1.4² = 9.6 m

2) If the cliff is high enough and we ignore air resistance

v = 9.8(2.7) = 26 m/s

What is LCR circuit??

Answers

An LCR circuit is a circuit which has Inductors , Capacitor and Resistors connected to each other in an specific way.

An RLC circuit is an electrical circuit consisting of a resistor, an inductor, and a capacitor, connected in series or in parallel. The name of the circuit is derived from the letters that are used to denote the constituent components of this circuit, where the sequence of the components may vary from RLC.

A body is travelling with a velocity 30 m/s².what will be its velocity after 4s?​

Answers

Answer:

70m/s²

Explanation:

we will use the first equation of Dalton to find it

what iz kinematics ???​

Answers

Answer:

the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion

Explanation:

In a wire a current of 6 A is flowing for 6 seconds. How much charge has flown through the wire during that time?



For brainliest

Answers

Answer:The answer is 36 since every second it give 6 that would be 6x6 which equal 36

Explanation:

36 Coulomb of electric charge is flowing through the wire.

Explanation:

Given that,

Current flowing in the wire, I = 6 A

Time, t = 6 seconds

To find,

The charge flowing through the wire.

Solution,

The rate of flow of electric charge per unit time is called electric current. Mathematically, the electric current is given by :

[tex]I=\dfrac{q}{t}\\\\q=It[/tex]

Putting all the values,

[tex]q=6\times 6\\\\q=36\ C[/tex], C is coulomb

Reference,

https://brainly.com/question/1418143

what is light emitting diode

Answers

Answer:

A light emitting diode (a semiconductor diode which glows when voltage is applied.

You have three flowers. You give
each a different amount of
water. What do you think is the
dependent variable?

Answers

Water is the dependant variable.The flower which get most water that will grow highest.The flower which get least water that will grow shortest .

Answer:

The plant growth height

Explanation:


if an object is accelerating at 4 m/s^2 and has a mass of 8 kg, what is the net
force (in newtons, N) on the object?

Answers

Answer:

The force applied is 32 N

Explanation:

F = ma

F = 8 × 4

F = 32 N

Answer:

[tex]\boxed {\boxed {\sf 32 \ Newtons}}[/tex]

Explanation:

We are asked to find the net force on an object. According to Newton's Second Law of Motion, force is the product of mass and acceleration. Therefore, the formula for calculating force is:

[tex]F= m \times a[/tex]

The mass of the object is 8 kilograms and its acceleration is 4 meters per second squared.

m= 8 kg a= 4 m/s²

Substitute these values into the formula.

[tex]F= 8 \ kg \times 4 \ m/s^2[/tex]

Multiply.

[tex]F= 32 \ kg *m/s^2[/tex]

Convert the units. 1 kilogram meter per second squared is equal to 1 Newton. So, our answer of 32 kilogram meters per second squared is equal to 32 Newtons.

[tex]F= 32 \ N[/tex]

The net force on the object is 32 Newtons.

it is sometimes----- at night in lagos cold or colder​

Answers

Answer:

-3.1512

Explanation:

is just is

these questions !plz !! i need help!!!

Answers

(6) Wagon B is at rest so it has no momentum at the start. If v is the velocity of the wagons locked together, then

(140 kg) (15 m/s) = (140 kg + 200 kg) v

==>   v6.2 m/s

(7) False. If you double the time it takes to perform the same amount of work, then you halve the power output:

E / (2t ) = 1/2 × E/t = 1/2 P

A car is accelerating at 6 m/s2. How long would it take the car to go 12 m/s faster?

Answers

Answer:

  2 seconds

Explanation:

Each second, it increases its speed by 6 m/s, so it will take 2 seconds for the speed to increase by 12 m/s.

An engineer is given the task of comparing the fuel efficiency of four car models. She reports the following findings: Model 1, 14 kilometers per liter. Model 2, 9 miles per liter. Model 3, 56 kilometers per gallon. Model 4, 1600 meters per liter. The data for which two models consistently follow the use of SI units?


A.

Models 1 and 4

B.

Models 1 and 3

C.

Models 2 and 3

D.

Models 3 and 4

Answers

Answer:

the ans is:-

Model 4

because it uses meters

when ideal gas is heated at constant pressure then P.E..
(a)decreases
(b)increases
(c)remains the same
(d)none of these​

Answers

Answer:

B increases hope this is right

Can y’all please help because my teacher didn’t really explain it to me

Answers

Answer:

8. Dinitrogen trioxide:

[tex]{ \sf{N_{2} O_{3}}}[/tex]

9. Nitrogen:

[tex]{ \sf{N}}[/tex]

10. Lithium oxide:

[tex]{ \sf{Li_{2}O}}[/tex]

11. Phosphorus trifluoride:

[tex]{ \sf{PF_{3} }}[/tex]

12. Vanadium oxide:

[tex]{ \sf{V_{2} O_{3} }}[/tex]

13. Silicon tetrafluoride:

[tex]{ \sf{SiF _{4}}}[/tex]

14. Sodium phosphide:

[tex]{ \sf{Na_{3} P}}[/tex]

infrared thermometers are commonly called laser thermometers true or false?​

Answers

Answer:

False

Explanation:

They are sometimes called laser thermometers as a laser is used to help aim the thermometer, or non-contact thermometers or temperature guns, to describe the device's ability to measure temperature from a distance. Infrared thermometers are a subset of devices known as "thermal radiation thermometers".

Is the following research description experimental, descriptive, or applied?

Jenna does a study to see if sugar and hyperactive behavior in children are related.

Answers

Answer:

It is experimental. She will testing or investigating on children. So yeah, it is experimental

An armadillo and Earth attract each other gravitationally. Which experiences the greater gravitational force, or do they experience the same force magnitude?
a. Same force magnitude
b. Earth
c. Armadillo

Answers

Answer:

a. Same force magnitude

Warm air is more dense than cool air. Warm air is less dense than cool air Warm air and cool air have the same density

Answers

Answer:

You are exactly right. The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less

If mass is measured in kg and acceleration is measured in m/s^2, what units would force be measured in? This unit is also know as a newton (N).

Answers

Mass=kgAcceleration=m/s^2

Using Newtons second law

[tex]\\ \sf\longmapsto Force=Mass\times Acceleration[/tex]

[tex]\\ \sf\longmapsto Force=kgm/s^2[/tex]

[tex]\\ \sf\longmapsto Force=Newton(N)[/tex]

If My mom is 40 and my goldfish died what is my favorite color ?

Answers

Answer:

square

Explanation:

+=-=

Answer:

SɴOWʙʟØWɘR

Explanation:

Find the exact value without a calculator. Tan 7pi/12=sin7pi/6/2 /cos7pi/6/2

Answers

Answer:

jh7j7j678j

Explanation:

[tex]-\frac{\sqrt{(x^{\frac{1}{2} }+1)(x^{\frac{1}{2} }-1) } }{x^{\frac{1}{2} }-1}[/tex]

Give reason The SI system of unit is better than the MKS system​

Answers

There are two primary reasons that SI is better than MKS. Both reasons come under the category that the MKS system is a proper subset of SI. That means that SI will do everything that MKS does, so you do not lose anything of MKS in going to SI but the are things that SI offers that MKS does not

if there were fewer plants on earth how would our atmoshere change

Answers

less oxygen?

Explanation:

Answer:

if there was less plants, there would be more carbon dioxide (and less oxygen) because they wouldnt be using it up for food.

Explanation:

The working principle of a washing machine is

A) reverse osmosis
B) diffusion
C) centrifugation
D) dialysis

Answers

Explanation:

The working principle of a washing machine is centrifugation .

Answer:

The correct option is C) centrifugation

Explanation:

The washing machine consists of a centrifuge for this purpose. A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis, applying a force perpendicular to the axis of spin that can be very strong.

i need help i was at school in high school because i am in 9 grade a kid name summer ebby is makeing me mad she never stops talking she makes me mad and upset she says like can i ask a question or can i ask you she never stops talking what i should do if a student do not stops talking ​

Answers

Just continue to ignore her. If she continues to do it, tell a teacher or someone and they will figure it out.

A construction worker is working on top of a building that is 305m tall. He finishes a pop can and throws it off the top of the building with a velocity of 4.9m/s. Ignoring air resistance, how far did the pop can land from the base of the building?[39m]

Answers

Answer:

Explanation:

We do not know because we do not know what the throw angle was.

If we ASSUME a horizontal throw,

time to drop from vertical rest.

t = √(2h/g) = √(2(305)/9.8) = 7.89 s

horizontal distance covered

d = vt = 4.9(7.89) = 38.658... which rounds to 39 m

hopefully his co-workers are under cover as the velocity at ground impact would be 77 m/s or 278 km/hr ... speeds which could cause severe injury or death from the impact of an empty aluminum can. Fortunately real air resistance will reduce the terminal velocity greatly. Still a stunt that would get most workers fired immediately.

convert 5.6 bushels to hectoliters
bom
(2.8 bushels = 1
1 hectoliter)
ets
2.0 hectoliters
O
lar
O
6.5 hectoliters
3.6 hectoliters

Answers

Answer:

Explanation:

5.6 bushel(1 hectoliter/2.8 bushel) = 2.0 hectoliters

how many times larger than a centigram is a dekagram

Answers

Answer:

A dekagram is thousand (1000) times larger than a centigram.

Explanation:

→ [1 dekagram = 1,000 centigrams]

→ 1 dekagram = 10 grams

→ 10 grams = 100 decigrams

→ 100 decigrams = 1,000 centigrams

calculate the valocity of water wave if the frequency is 400hz the wavelength is 6m and amplitude of the wave is 3.76cm

Answers

Explanation:

V = 400x6 = 2400m/s

V = 2400m/s

The velocity of a water wave if the frequency is 400hz the wavelength is 6m and the amplitude of the wave is 3.76cm will be 2400 m/s.

What is Wavelength?

It can be understood in terms of the distance between any two similar successive points across any wave for example wavelength can be calculated by measuring the distance between any two successive crests.

The velocity of water wave = Wavelength x Wave Frequency

                                             = 6 × 400 m/s

                                             =2400 m/s

Thus, The velocity of a water wave if the frequency is 400hz the wavelength is 6m comes out to be 2400 m/s.

Learn more about wavelength

brainly.com/question/7143261

#SPJ2

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