What is an impulse? (select all that apply)
J=Ft
change in momentum
V=m/a
a rash decision

Answer:

34.45m

Explanation:

Magnitude of a vector is equal to the square root of sum of squares of x & y vectors.

Magnitude = [tex]\sqrt({x^2} + {y^2})[/tex]

= [tex]\sqrt({19.5^2} + {28.4^2})[/tex]

=34.45m

Answer:

In the first one circle : luster

second circle: atsuete seeds

third: dentures

Explanation:

Well I ain’t sure

Answer:

The formula is correct.

Explanation:

The given expression is :

[tex]v^2=2gh[/tex]

Where

v is the velocity

g is acceletion due to gravity

h is height

Taking LHS,

The dimensional formula for [v] = [LT⁻¹]

[v²] = [L²T⁻²]

Taking RHS,

The dimensional formula for [g] = [LT⁻²]

The dimensional formula for [h] =[L]

2gh = [LT⁻²][L]

= [L²T⁻²]

So, LHS =  RHS

So, the given formula is correct dimensionally.

[tex] \orange{\underline{\huge{\bold{\textit{\green{\bf{QUESTION}}}}}}}[/tex]

The apparent depth of an object at the bottom of a tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth of the liquid in the tank?

[tex]{\bold{\blue{GIVEN}}}[/tex]

REFRACTIVE INDEX = 1.3

APPARENT DEPTH = 7.7 cm

[tex]{ \bold{\green{To \: Find}}}[/tex]

REAL DEPTH OF THE OBJECT.

[tex]{\red{FORMULA \: \: USED }}[/tex]

[tex]Reflective \: Index = \frac{Real \: Depth}{Apparent \: Depth } [/tex]

[tex] \huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}[/tex]

Refractive Index = 1.3

Apparent Depth = 7.7 cm

Putting the values in the formula:-

[tex]Reflective \: Index = \frac{Real \: Depth}{Apparent \: Depth } \\ \\ 1.3 = \frac{Real \: Depth}{7.7 \: cm} \\ \\ 1.3 \times 7.7 = Real \: Depth \\ \\ 10.01 \: \: cm = Real \: Depth[/tex]

Answer:

55.128kg

Explanation:

P= m×v

or, m=P/v = 430/7.8 = 55.128 kg

Answer:

55.13 kg

Explanation:

Momentum, P = m*v

P = m*v

m = P/v

m = 430/7.8

m = 55.13 kg

Experimental evidence that supports the new idea

Answer:

Wow, thank you so much! I hope you have a great day!

Answer:

Explanation:

HOPE IT HELPS

Answer:

the fish wilil appear to be purple

Explanation:

Answer:

Input force of pulley system = 200 N

Explanation:

Given:

Mechanical advantage of pulley system = 5

Output force from pulley system = 1,000 N

Find;

Input force of pulley system

Computation:

Mechanical advantage = Output force / Input force

Mechanical advantage of pulley system = Output force from pulley system / Input force of pulley system

5 = 1,000 / Input force of pulley system

Input force of pulley system = 1,000 / 5

Input force of pulley system = 200 N

Answer: 43.7

Explanation: Simply round the number so that there are only three digits in the number.

We have that 43.659 rounded to three significant digits is

[tex]43.659=43.7[/tex]

From the Question we are Given

Integer=43.659

To round off to three significant digits means to represent only three digits

Therefore

43.659 in  three digits is

[tex]43.659=43.7[/tex]

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Answer: I dont know Im srry diagram

Explanation:

Diagram baby + baby Diagram = Diagram baby Diagram

Answer:

chemists say that equilibrium lies to the right as written, favoring the formation of products. An example is the reaction between H2 and Cl2 to produce HCl, which has an equilibrium constant of 1.6×1033 at 300 K

I suppose this is right?

Explanation:

Answer:

B: C + O2 = CO2

Explanation:

In Chemistry,a synthesis reaction is one that occurs when two or more reactants combine in such a manner that they form a single product.

Looking at the options, the only one where 2 reactants combine to form a single product is option C where Carbon reacts with Oxygen to form carbon (IV) oxide.

Answer:

t=10.95 seg

Explanation:

The vertical component of velocity is 0, so, the time in air can be calculated

[tex]h=v_ot-\frac{1}{2}gt^2\\\\h=0-\frac{1}{2}gt^2~=>t=\sqrt{2gh}=\sqrt{2*10\frac{m}{s^2}*6m}=10.9544~seg[/tex]

Answer:

In a truss bridge, two long - usually straight members known as chords - form the top and bottom; they are connected by a web of vertical posts and diagonals. The bridge is supported at the ends by abutments and sometimes in the middle by piers.

Explanation:

Hope it helps mark as brainliest pls

:)

Answer: Pure-Tone Audiometry

Explanation:

Pure-tone audiometry refers to the behavioral test that is used in the measurement of hearing sensitivity. Pure tone audiometry an hearing test that's used in the identification of an individuals hearing threshold levels which is used in determining the degree of a hearing loss and then a basis for diagnosis will be provided.

Therefore, Pure-Tone Audiometry is a procedure that's used for measuring hearing sensitivity at certain frequencies using pure tones presented through an oscillator placed on the forehead or mastoid bone of the listener.

Answer: 24.39 N

Explanation:

Given

Torque required to open the lid is [tex]\tau =2\ N.m[/tex]

diameter of lid [tex]d=8.2\ cm[/tex]

Force exerted by fingers and thumb forms a couple. So, torque can be written as

[tex]\Rightarrow \tau= F\times 2r\\\Rightarrow 2=F\times 8.2\times 10^{-2}\\\\\Rightarrow F=\dfrac{200}{8.2}\\\\\Rightarrow F=24.39\ N[/tex]

Thus, the magnitue of each force is 24.39 N

Answer:

its electric or magnetic fields, i think its electric fields

Hope its right

Explanation:

SI system is advantageous over mks system because SI system is intended to extend by its definition and has 7 base which is more than MKS system .

Hope it is helpful to you ☺️

Answer:

Explanation:

SI system is advantageous over mks system because SI system is intended to extend by its definition and has 7 base which is more than MKS system.

Answer:

When conducting research, scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis (often in the form of an if/then statement), the results aiming to support or contradict a theory.

I HOPE ITS RIGHT

The process of scientific methods involves making inferences, deriving predictions from hypotheses as logical consequences, and conducting experiments or empirical observations based on those predictions.

When conducting research, scientists use scientific methods to experiment with hypotheses (often in the form of if-then statements) aimed at supporting or disproving the scientific theory. Collect empirical evidence.

The six steps of the scientific method are

1) asking about what you are observing,

2) doing background research to learn what is already known about the subject,

3) making hypotheses, and

4). Experiment with a hypothesis, 5) analyze data

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Answer:

 U = 25 J

Explanation:

The energy in a set of charges is given by

          U = [tex]k \sum \frac{q_i}{r_i}[/tex]

in this case we have three charges of equal magnitude

          q = q₁ = q₂ = q₃

with the configuration of an equilateral triangle all distances are worth

          d = a

          U = k ( [tex]\frac{q_1q_2}{ r_1_2 } + \frac{q_1q_3}{r_1_3} + \frac{q_2q_3}{r_2_3}[/tex] )

we substitute

           15 = k q² (3 / a)

            k q² /a = 5

For the second configuration a load is moved to the measured point of the other two

          d₁₃ = a

The distance to charge 2 that is at the midpoint of the other two is

          d₁₂ = d₂₃ = a / 2

           U = k (\frac{q_1q_2}{ r_1_2 } + \frac{q_1q_3}{r_1_3} + \frac{q_2q_3}{r_2_3})

            U = k q² (  [tex]\frac{2}{a} + \frac{1}{a} + \frac{2}{a}[/tex] )

            U = (kq² /a) 5

substituting

            U = 5 5

            U = 25 J

Answer:

Solon,

total mass (kg)= 100kg

height (h)= 25m

acceleration due to gravity = 9.8m/s²

so,

work done =m*g*h

= 100*9.8*25

= 24,500 joule

The work done by the crane in lifting the given mass of concrete to the given vertical height is 24500 Joules.

Work done is simply defined as the energy transfer that takes place when an object is either pushed or pulled over a certain distance by an external force. It is expressed as;

W = F × d

Where f is force applied and d is distance travelled.

Note that, the concrete is lifted upward, Weight of the concrete becomes mass multiply by acceleration due to gravity. g = 9.8m/s²

F = Weight = mg

Given that;

W = F × d

W = (mg) × d

W = ( 100kg × 9.8m/s² ) 25m

W = 980kgm/s² × 25m

W = 24500kgm²/s²

W = 24500J

Therefore, the work done by the crane in lifting the given mass of concrete to the given vertical height is 24500 Joules.

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Answer:

Explanation:

This is a displacement vector since it is given in terms of a distance (meters, to be specific). The way you find the x-component is:

[tex]V_x=Vcos\theta[/tex] which means you multiply the magnitude (length) of the vector times the cos of the direction (the angle):

[tex]V_x=2.5cos(64)[/tex] to get

1.1 m, choice B.

Answer:

Concave mirrors reflect light to a central point (converging)

Suppose the source is to the left of the  mirror in  question.

Parallel rays into the mirror are always reflected towards the focal point.

In the case of a concave mirror the real parallel rays pass thru the focal point.

If the mirror is convex the rays will diverge to the left and act as if they were emanating from the focal point to the right of the mirror.

Answer:

Its gravitational potential energy must increase.

Explanation:

Conservation of Mechanical Energy

The total amount of mechanical energy, in a closed system in the absence of dissipative forces like friction or air resistance, remains constant.

This means that energy cannot disappear or appear and that potential energy can become kinetic energy or vice versa.

In a closed system like a pendulum, two types of energies are considered: Gravitational potential (U) and kinetic (K). Thus, the sum of both energies must remain constant in time.

Suppose the pendulum is at a state where U=150 J, and K=350 J. The total mechanical energy is:

M = 150 J + 350 J = 500 J

If the kinetic energy decreases to a new value, say K = 200 J, then the gravitational potential must increase to compensate for this new condition, that is: U = 300 J

So, It's gravitational potencial energy must increase

Hope it helps you I'm from ph :)

Answer:

Explanation:

The formula for the magnitude of a vector is

[tex]B_{mag}=\sqrt{(-1.33)^2+(2.81)^2}[/tex] and then round to the hundredths place:

3.11 m. Since we are in Q2, we can also find the direction of this vector:

[tex]tan^{-1}(\frac{2.81}{-1.33})=-64.7[/tex] but since we are in Q2, we add 180 degrees to the result, getting the angle to be 115.3

Answer:115.33

Explanation: