Question 4 (2 points)
Which one of the following is not a leg muscle?
a) Teres Major muscle
b) Plantaris tendon
c) Sartorius muscle
d ) Semimembranosus muscle

Answer:

0.01m^3

Explanation:

m=27

density=2700

density=mass/volume

2700=27/volume

volume=27/2700=0.01

Answer:

p=mv , m1*v1 = m2*v2 , 2.2*38 = 68*v2 -> v2=1.23 , vf=vi+v2 -> vi=vf-v2 -> vi=5.5-1.23=4.27

my apologies if it's wrong

let the child jump, do ur work~~~

hope helpz~

A marble rolls off a tabletop 1.15 m high and hits the floor at a point 4 m away from the edge of the table in the horizontal direction,

This is further explained below.

Generally, the equation for motion is mathematically given as

S= ut + 0.5at²

Therefore

y = Voy t + 0.5gt^2

1 = 0.5x 98 x 6²

1=4.9t^2

[tex]t=\sqrt{0.2041 }[/tex]

t= 0.45 seconds.

b) Horizontal motions are uniform.

V=Horizontal displacement/time

V=1/0.45

V=2.22m/s

C)

Vx: 2.22 m/s At bottom,

Vy² = Voy² + 2as

Vy² = 2x95x1

Vy² = 19.6

Total velocity

[tex]VT=\sqrt{( 2.22 m/)^2+19.6}[/tex]

VT=4.95 m/s

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The number of kilowatts used by an individual to operate his appliances is determined as 12.1 kWh.

The average daily power consumption is the amount of electric energy consumed by an individual on a daily rate.

The average daily power consumption of individuals in USA is 12,100 W-hr.

E = 12,100 Whr/1000

E = 12.1 kWh

Thus, the number of kilowatts used by an individual to operate his appliances is determined as 12.1 kWh.

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The efficiency of the steam engine is 78.9% because the rest of the work input is used to overcome friction.

Efficiency of a machine expresses the useful work done by a a machine as a percentage.

The efficiency of machines are always less than 100% percent due to energy losses due to friction and heat.

For the steam engine:

Work output = 225 J

Work input = 285 J

Efficiency = 225/285 × 100% = 78.9 %

Therefore, the efficiency of the steam engine is 78.9% because the rest of the work input is used to overcome friction.

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A key to an individual's success in this PE course is honesty.

PE is an acronym for physical education and it can be defined as a course (subject) which is taught in schools, so as to provide students with information on how to promote good health and physical fitness.

Some of the factors that affects a student's success in different physical education (PE) courses include the following:

In this scenario, honesty is key to an individual's success in this PE course.

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Answer:

Established in 1972 by the McMahon Government, the institute's primary function is research for sustainable use and protection of the marine environment. The Institute investigates topics from broad-scale ecology to microbiology.

Option A and D are the right answer for the successful design of ineffective high altitude drone.

''Will it become more popular than the last drone design?'' and ''Will it cost more than the last drone design?'' are the two questions that can be used to identify criteria for the successful design of ineffective high altitude drone because popularity and cost are the two factors which plays greater role in the success of a design.

So we can conclude that option A and D are the right answer for the successful design of ineffective high altitude drone.

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The force on one of the wires is determined as 1.76 x 10⁻⁴ N/m.

The force between the two parallel wire is calculated as follows;

F = μI²L/2πr

where;

F = (4π x 10⁻⁷ x 6.5² x 1.5)/(2π x 0.048)

F = 2.64 x 10⁻⁴ N

F/L =  2.64 x 10⁻⁴ N / 1.5

F/L = 1.76 x 10⁻⁴ N/m

Thus, the force on one of the wires is determined as 1.76 x 10⁻⁴ N/m.

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[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]

[tex] \sf \red{When \: baking \: soda \: is \: mixed \: with \: lemon \: juice, \: bubbles \: are \: formed \: with \: the \: evolution \: of \: a \: gas.}[/tex]

[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. The gas is formed in the reaction is Carbon dioxide. [tex] CO_{2}[/tex] is formed.

The change which happened in this reaction is a chemical change.

[tex] \boxed{ \frak \green{Explanation}}[/tex]

Since, in chemical change we can't bring a substance to it's actual form how it was in earlier.

Examples: burning of paper is chemical, since we can't get the fine paper again after it is burnt.

Thus, the above reaction is also a chemical change, since we can't get back the lemon juice how it was earlier.

[tex] \boxed{ \frak \red{Brainlysamurai}}[/tex]

(a) The amount of work required to change the rotational rate is 0.0112 J.

(b) The decrease in the rotational inertia when the outermost particle is removed is 64.29%.

The moment of inertia of the rod from the axis of rotation is calculated as follows;

I = md² + m(2d)² + m(3d)²

where;

d = 6/3 = 2 cm = 0.02 m

I = md²(1 + 2² + 3²)

I = 14md²

I = 14(0.01)(0.02)²

I = 5.6 x 10⁻⁵ kg/m³

K.E = ¹/₂Iω²

K.E = ¹/₂(5.6 x 10⁻⁵)(60 - 40)²

K.E = ¹/₂(5.6 x 10⁻⁵)(20)²

K.E = 0.0112 J

I₂ = md² + m(2d)²

I₂ = 5md²

ΔI = 14md² - 5md²

ΔI = 9md²

η = (ΔI/I) x 100%

η = (9md²/14md²) x 100%

η = 64.29 %

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The power output of the cells is 6 watts and the resistance inside the phone is 6 Ohms.

Power Output can be defined as the average rate of electric energy delivery in a circuit.

The S.I unit of power is Watts (W)

Resistance can be defined as the opposition to the flow of electric current caused by a substance.

The S.I unit of resistance is Ohm, denoted with the symbol (Ω)

Using the formula given;

Power output, P = VI

where V = voltage = 0.5 × 12 V = 6V

I = current = 1 A

Power output = 6 × 1 = 6 Watts

Resistance = V ÷ I = 6 ÷ 1 = 6 Ohms

Therefore, the power output of the cells is 6 watts and the resistance inside the phone is 6 Ohms.

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Answer:

179 m

Explanation:

Given:

v₀ = 96.0 km/h × (1000 m/km) × (1 h / 3600 s) = 26.67 m/s

a = 0 m/s²

t = 6.7 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (26.67 m/s) (6.7 s) + ½ (0 m/s²) (6.7 s)²

Δx = 179 m

The two correct statement are A and B. Light waves are electromagnetic waves that can travel through a vacuum. Mechanical waves can travel through a vacuum.

EM waves are the electromagnetic radiations are made up of electromagnetic waves created when an electric field collides with a magnetic field.

Electromagnetic waves may alternatively be defined as the combination of oscillating electric and magnetic fields.

Electrically charged particles experiencing acceleration create electromagnetic waves, which can then interact with other charged particles and exert force on them.

The two correct statement is;

1. Light waves are electromagnetic waves that can travel through a vacuum.

2. Mechanical waves can travel through a vacuum.

Hence,two correct statement are A and B.

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Your pancreas makes a digestive juice that has enzymes that break down carbohydrates, fats, and proteins. The pancreas delivers the digestive juice to the small intestine through small tubes called ducts. Liver. Your liver makes a digestive juice called bile that helps digest fats and some vitamins.

Digestive enzymes are made by the pancreas and aid in the breakdown of proteins, carbs, and lipids. Bile, a liquid made by the liver that aids in fat digestion, is produced.

The digestive system breaks down the food we consume into its most basic components, such as glucose (sugar), amino acids (which make up protein), or fatty acids (which make up lipids).

Here,

The digestive system of humans is made up of a fully formed alimentary canal and the glands that are located there. The alimentary canal, which includes the mouth, oral cavity or buccal cavity, pharynx, oesophagus, stomach, small intestine, large intestine, and anus, is encircled by glandular epithelium.

The nutrients from the digested food are subsequently transported to every cell in the body thanks to absorption into the bloodstream from the small intestine.

Although they are not a part of the alimentary canal, the pancreas, which is located beneath the stomach, the gallbladder, and the liver are all vital for digestion.

Hence,

Digestive enzymes are made by the pancreas and aid in the breakdown of proteins, carbs, and lipids. Bile, a liquid made by the liver that aids in fat digestion, is produced.

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The number of  lightbulbs  in a series circuit will not affect the current flowing through them. The independent variable is resistance. The dependent variable is voltage.

The current is the stream of charges which flow inside the conductors when connected across the end of voltage.

For the given set of series bulbs as resistors, the current flowing through all the bulbs will the same. Voltage is divided to each resistor.

From the Ohm's law, V =IR

R = V/I

Here, R is the proportionality constant. So, this is independent value.

The voltage difference across the resistors dependent on the current flowing through that resistance.

Thus, the number of  lightbulbs  in a series circuit will not affect the current flowing through them. The independent variable is resistance. The dependent variable is voltage.

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The angular velocity of the stepped cylinder is determined as 2.35 rad/s.

The centripetal acceleration of the cylinder is calculated as follows;

F = ma

a = F/m

a = 40/ 36

a = 1.11 m/s²

a = v²/r

v² = ar

v² = 1.11 x 0.2

v² = 0.222

v = 0.47 m/s

v = ωr

ω = v/r

ω = 0.47/0.2

ω = 2.35 rad/s

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Answer:

Light waves are electromagnetic waves while sound waves are mechanical waves. :)

Answer:

6.6 m

Explanation:

.6 m/s   *  11 s  = 6.6 m    ( see how the 's' cancels out and you are left with 'm'  as the answer ?)

Answer:

22.5m/s, this is assuming conservation of energy and that the girl starts coasting from rest

Explanation:

conservation of energy: mgh = 1/2 m*v^2

h = 25.8m, m = 64.6kg, g=9.81m/s^2

plug in and solve for v

v = sqrt(2gh) = sqrt(2*9.81*25.8) = 22.5m/s

The coasting speed of the girl at the bottom of the ramp would be approximately 22.4 m/s.

To find the coasting speed at the bottom of the ramp, we can apply the conservation of energy principle. At the top of the ramp, the initial potential energy is converted into kinetic energy at the bottom of the ramp.

Calculate the potential energy at the top of the ramp:

Potential energy (PE) = mass (m) * acceleration due to gravity (g) * height (h)

PE = 64.6 kg * 9.8 m/s² * 25.8 m = 16114.284 J

At the bottom of the ramp, all the potential energy will be converted into kinetic energy:

Kinetic energy (KE) = 0.5 * mass (m) * velocity²

16114.284 J = 0.5 * 64.6 kg * velocity²

Solve for velocity:

velocity² = 2 * (16114.284 J) / 64.6 kg

velocity² = 500 m²/s²

velocity = √(500 m²/s²) ≈ 22.4 m/s

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Work done

Work done by kinetic friction:-

Answer:

The Work done is 28542.4J.

The work done by the kinetic friction is 878.423N

Given:

FscosØ

We put the values together.

208.4(161.5)cos32

33656.6cos32

28542.4J

Work done by kinetic friction:-

Given the formula, we put the values.

0.455(197)(9.8)

878.423N

The potential at a point on the line will be,[tex]\rm E_{net}=\frac{5Kq}{r}[/tex].The net potential is the algebraic sum of the electric potential.

The amount of work performed in an electrical field to move a unit charge from one location to another is defined as the electrical potential difference.

In other terms, the potential difference is the difference in electric potential between two charged substances.

The traditional current flow is from positive to negative terminals, indicating the movement of positive charges in that direction.

[tex]\rm E_1 = \frac{Kq}{r} \\\\ E_2=\frac{K(4q)}{r}[/tex]

The potential at a point on the line is found as;

[tex]\rm E_{net}=E_1+E_2 \\\\\ E_{net}=\frac{Kq}{r} +\frac{K(4q)}{r} \\\\E_{net}=\frac{5Kq}{r}[/tex]

Hence, the potential at a point on the line will be,[tex]\rm E_{net}=\frac{5Kq}{r}[/tex]

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Answer:

A

Explanation:

KE = 1/2 m v^2

     the greatest is  A

Answer:

See below

Explanation:

Geostationary satellites are placed in orbit above the equator at an orbital altitude of  35786 km in order to perfectly match the earth's rotation...thus they APPEAR stationary in the sky ..... then your DISH TV antenna (etc)  can point in one direction at them for continuous communication.    Or.... a spy or weather  satellite would be able to look at one section of the earth non-stop

Answer:

D. from a separate pool than is the control group.

Explanation:

in the picture the person answers is backwards but...

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