Answer:
All organisms consist of structural units called cells; some contain a single cell (unicellular) and others contain many units (multicellular). Multicellular organisms are able to specialize cells to perform specific functions.
Explanation:
(Astronomy)
Colin tells his friend to orbit around the perimeter of the yard spraying bug spray every few feet. How does Colin want his
friend to move?
in a loose figure 8
in a zig-zag pattern
in a very straight line
within a curved or elliptical path
ANSWER: D (Within a curved or elliptical path.)
In order for his friend to orbit around the perimeter of the yard spraying bug spray every few feet, Colin wants his friend to move within a curved or elliptical path.
What is Bug spray?Bug spray is described as a substance applied to the skin, clothing, or other surfaces to discourage insects from landing or climbing on that surface.
The main component of bug sprays is a pressurized, concentrated dose of their active substance. The substance that hides the smell of carbon dioxide and repels insects is the active component in bug spray.
In order to orbit around the perimeter of the yard spraying bug spray every few feet, Collins's friend must move within a curved or elliptical path.
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Calculate the force generated by a 1250 mbarmbar pressure on an area of 3 mm^2.
Answer:
0.375 N
Explanation:
1250 * 3 mm^2 =0.375 N
A yo-yo is twirled on a 4 meter long string so that its tangential
speed is 16 m/s. If the string is only 2 meter long and the revolutions per
second stay constant, what is the new tangential speed?
Answer:
8m/s
Explanation:
i think i had this question on a test i'm taking so i'm assuming i cannot say for sure if this is correct
what is the moment of inertia iii of particle a? mr2mr2 9mr29mr2 10mr210mr2 undefined: an axis of rotation has not been specified.
It is not possible to determine the moment of inertia of particle A without specifying the axis of rotation.
How to find the moment of inertia of a particle?The moment of inertia of a particle depends on the mass of the particle r,
The values you provided for the moment of inertia of particle A correspond to different distances from the particle to the axis of rotation.
For example, if the axis of rotation is passing through the center of mass of the particle, then the moment of inertia would be I = mr^2, where r is the distance from the center of mass to the axis of rotation. However, if the axis of rotation is passing through a different point, then the moment of inertia would be different.
Therefore, in order to determine the moment of inertia of particle A, you need to specify the axis of rotation. Once the axis of rotation is specified, you can use the appropriate formula to calculate the moment of inertia of the particle.
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Which material most likely gets the warmest when placed in the sun.
The material that is most likely to get warmest when placed in the sun is black cloth.
The material that is most likely to get warmest when placed in the sun is black cloth. The reason for this is that black is a good absorber of radiant energy, which is why it appears black. When the sun's radiant energy falls on black cloth, it absorbs the maximum amount of heat and gets hot. Light colors, on the other hand, do not absorb heat as well as black colors do. As a result, they appear cooler. As the sun's energy falls on the material, the heat is absorbed, and the temperature of the material rises. The temperature increases until the material has absorbed all of the radiant energy that it can, and then the temperature stabilizes. This is why black cloth, which absorbs more energy from the sun than any other color, feels the warmest.
Black cloth is most likely to become hot when placed in the sun because it absorbs the maximum amount of radiant energy. The color black is known for its heat-absorbing properties, while light colors reflect sunlight and appear cooler.
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PLEASE HELP WILL MARK BRAINLIEST IF YOU EXPLAIN HOW YOU GOT THE ANSWER!!!
For the given system of masses T₂ is greater than T₁. So, option d. is correct.
What is tension force?Tension is defined as pulling force transmitted axially by a cord, rope, chain, or similar object, or through the ends of a rod, truss, or similar three-dimensional object. Stresses/Tensions can also be described as pairs of acting and reaction forces acting at each end of the element.
W = m × g
m = W/g
m = mass of block
W = weight of the block (100 N)
g = gravitational acceleration (10 m/s²)
m₁ = 100/10
m₁ = 10 kg
m₂ = 20/10
m₂ = 2 kg
m₃ = 10/10
m₃ = 1 kg
Total mass of the system:
= 10 + 2 + 1
= 13 kg
Now the total force required to pull the system of blocks is:
F = m × a
F = 13 × 1
F = 13 N
Now for tension:
T₁ = m₁ × a
T₁ = 10 × 1
T₁ = 10 N
Since block 2 is receiving tension from both sides:
T₂ - T₁ = m₂ × a
T₂ - 10 = 2 × 1
T₂ = 10 + 2
T₂ = 12 N
The above calculation conclude that, T₂ is greater than T₁ and none of the tension force is equal to the net force on the system.
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The ____ is a wedge-shaped thickening in the middle layer of the eyeball that controls the shape of the lens.
The ciliary body is a wedge-shaped thickening in the middle layer of the eyeball that controls the shape of the lens.
The ciliary body is a section of the middle layer of the eye's wall. It is located behind the iris. It includes a ring-shaped muscle that modifies the curvature of the lens when the eye focuses.
Additionally, it creates the transparent liquid that fills the area between the iris and the cornea. Aqueous humor is the name of this fluid in the eye.
It also contains the ciliary muscle, which modifies the lens' shape when your eyes focus on a close object.
The anterior pars plicata and the posterior pars plana are two parts of ciliary body. The anterior vitreous comes into contact with the pars plana, which creates a smooth surface. The ciliary processes, which are 70–80 radiating ridges, are produced by the pars plicata.
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if an object is in rotational equilibrium, what absolutely true statement can be said about the motion of the object? a. there are no torques acting on the object. b. there is no rotational acceleration. c. the object is not moving. d. the object must be rotating.
The correct statement about motion of object is b. there is no rotational acceleration.
When an object is in rotational equilibrium, it means that the sum of all torques acting on the object is zero, resulting in no rotational acceleration.
However, the object may still be rotating at a constant angular velocity.
So, statement a. there are no torques acting on the object is not necessarily true, and statement c. the object is not moving and statement d. the object must be rotating are both incorrect.
Therefore, the correct one is b. there is no rotational acceleration.
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How to integrate 1/ 1 + x2
The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.
Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.
Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:
∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du
The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.
Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.
Let us work through the steps:
Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x
Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du
Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.
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A spring has an unstretched length of 0.2 m. A 0.2 kg mass hanging from the spring stretches it to an equilibrium length of 0.3 m. Suppose the mass is pulled down to where the spring’s length is 0.5 m. When it is released, it begins
to oscillate. What is the amplitude of the oscillation?
. Reliability engineers are interested in systems having components con- nected in parallel. The phrase "in parallel" is defining as the situation that the system is functioning (reliable) if at least one of the compo- nents is functioning. In this problem, we consider a four-engine aircraft.
Let K be the number of functioning components in a parallel system, in this case, the number of functioning engine on the aircraft.
(a) What is the support of K?
(b) What is the set of the event that the aircraft is functioning?
(c) Assuming that the four engines are functioning independently, each with probability p, show that the probability of the aircraft is functioning, system reliability, equals
(a) The support of K can be given by {0, 1, 2, 3, 4}.
(b) The set of events in which the aircraft is functioning can be given as follows: {K ≥ 1}, which means the aircraft is functioning if and only if at least one of its engines is functioning properly.
(c) Let's assume that the probability of each engine functioning properly is given by p. So, the probability of any particular engine malfunctioning or not functioning properly is (1 - p).
Since the aircraft is functioning if and only if at least one of its engines is functioning properly, the probability of system reliability can be calculated using the following formula:
P(K ≥ 1) = 1 - P(K = 0)
Since each engine functions independently of each other, the probability of each engine malfunctioning can be multiplied together. Thus, we have:
P(K = 0) = (1 - p)^4
Then,
P(K ≥ 1) = 1 - P(K = 0)
= 1 - (1 - p)^4
Therefore, the probability of the aircraft functioning, which represents system reliability, is given by 1 - (1 - p)^4.
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What is the arrow pointing to in the
diagram below?
Answer seafloor spreading
The arrow is pointing to the Ocean Trench
Write the importance of international bureau of weights and measurement.
Answer:
The importance of international bureau of weights and measures are;
1. to bring unification of measurement system.
2. to establish and preserve fundamental international prototypes.
3. to verify national standards, etc.
particle a has a mass m and a speed v, while particle b has a mass 2m and a speed 2v. what is the ratio of the kinetic energy of particle b to the kinetic energy of particle a?
The ratio of the kinetic energy of particle b of mass 2m and a speed 2v to the kinetic energy of particle a of mass m and a speed v is 8 : 1
K = 1 / 2 m v²
K = Kinetic energy
m = Mass
v = Velocity
Let kinetic energy of particle a be K1 and kinetic energy of particle b be K2.
For particle a,
K1 = 1 / 2 m v²
For particle b,
m = 2m
v = 2v
K2 = 1 / 2 ( 2 m ) ( 2 v )²
K2 = 4 m v²
The ratio of the kinetic energy of particle b to the kinetic energy of particle a,
K2 / K1 = ( 4 m v² ) / ( 1 / 2 m v² )
K2 / K1 = 8 / 1
Therefore, the ratio of kinetic energy of particle b to the kinetic energy of particle a is 8 : 1
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Complete sentences pls!!!
Answer:
A rain guage is used to measure the precipitating rain in a given amount of time.
A thermometer is used to measures temperature.
A barometer is used to measure atmospheric pressure.
A anemometer is used to calculate wind speed
Explanation:
Calculate the rotational kinetic energy of the earth about its own axis. Mass of the earth =6×1024kg and radius of the earth =6400 km.
The value of rotational kinetic energy is 8.196*10 22, if Mass of the earth =6×1024kg and radius of the earth =6400 km.
To calculate the rotational kinetic energy of the Earth about its own axis, we need to use the formula: Rotational Kinetic Energy (K) = (1/2) * I * ω² Where: I is the moment of inertia of the Earth ω is the angular velocity of the Earth
The moment of inertia (I) of a solid sphere rotating about its axis is given by: I = (2/5) * M * R² Where: M is the mass of the Earth R is the radius of the Earth Given: Mass of the Earth (M) = 6 × 10^24 kg Radius of the Earth (R) = 6400 km = 6,400,000 meters
First, let's calculate the moment of inertia (I): I = (2/5) * M * R² = (2/5) * (6 × 10^24 kg) * (6,400,000 meters)² Next, we need to calculate the angular velocity (ω). The Earth completes one full rotation in approximately 24 hours, which is equal to 24 * 60 * 60 = 86,400 seconds.
ω = 2π / T = 2π / (86,400 seconds) Now, we can substitute the values into the formula for rotational kinetic energy: K = (1/2) * I * ω² K =8.196*10 22.
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a 14,000-kg boxcar is coasting at 1.50 m/s along a horizontal track when it hits and couples with a stationary 10,000-kg boxcar. what is the speed of the cars after the collision?
The speed of the cars just after the collision is 0.875 m/s.the formula to be used m1u1 + m2u2 = m1v1 + m2v2.V=14000*1.5÷14000+1000=0.875m/s
How is speed used? What is speed?Teenagers, young adults, and the others take the stimulant drug "speed" to feel more focused and alert, as well as, in some circumstances, to get high. Several types of speed are also used by some people to suppress their appetite.
Why do people drive fast?Simply because they are not paying attention on their driving pace, drivers frequently go above the speed limit. Traffic flow, operating a powerful car, and listening to music were all mentioned as contributing factors. Some drivers claimed that passengers' distraction caused them to accelerate.
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A soccer player kicks a ball, changing its momentum by 11\, \dfrac {\text{kg}\cdot \text m}{\text s}11 s kg⋅m 11, start fraction, start text, k, g, end text, dot, start text, m, end text, divided by, start text, s, end text, end fraction. The net force on the ball is 910\,\text N910N910, start text, N, end text.
Answer:
0.012 seconds
Explanation:
The time at which the soccer player maintain contact with the ball is as follows:
Given that
Change in momentum = 11 kg.m.s^-1
The Net force applied = F = 910 N
Now the following formulas should be applied:
For acceleration:
\(a = \frac{\triangle v}{\triangle t} \\\\\triangle v = a \triangle t\)
For momentum
\(\triangle p = m\triangle v\\\\\triangle p = ma\triangle t\\\\\triangle p = f\triangle t\\\\\triangle t = \frac{\triangle p}{F}\)
Now
Put the values to the above formula
= 11 ÷ 910
= 0.012 seconds
select all the correct answers:what happens to water when it changes to icea: density increasesb: density decreasesc: mass increasesd: mass decreasese: volume increases f: volume decreases
Answer:
b: density decreases
e: volume increases
Explanation:
When the water changes to ice, there won't be a loss of water, so the mass will be the same. However the ice will occupy more space, so the volume will increase. Then, since density is the mass divided by the volume, if the volume increase and the mass stays the same, the density decreases.
So, the answers are:
b: density decreases
e: volume increases
The figure shows a uniform, horizontal beam of length = 7 m and mass = 50 kg that ishanging by two cables as shown. If a person of mass = 60 kg stands at 3.6 m from the leftend, what are the tensions (T1 and T2) in the cables? Write only the answer to T2 incanvas (in newtons).T1T2
Given:
• Length of beam = 7 m
,• Mass of beam = 50 kg
,• Mass of person = 60 kg
,• Distance of the person from the left = 3.6 m
Let's find the tensions, T1 and T2.
First make a free body sketch:
Here, the net torque = 0.
To find the tension, T1, we have:
\(T_1*l-m_Pg*(l-l_1)-m_bg*\frac{l}{2}=0\)Where:
l = 7 m
mp = 60 kg
g is acceleration due to gravity = 9.8 m/s²
l1 = 3.6 m
mb = 50 kg
Thus, we have:
\(\begin{gathered} T_1*7-60*9.8*(7-3.6)-50*9.8*\frac{7}{2}=0 \\ \\ T_1*7-1999.2-1715=0 \\ \\ T_1=\frac{3714.2}{7} \\ \\ T_1=530.6\text{ N} \\ \end{gathered}\)Therefore, the tension T1 = 530.6 N.
To find the tension T2, we have:
\(\begin{gathered} T_2*7-60*9.8*3.6-50*9.8*3.5=0 \\ \\ T_2*7-2116.8-1715=0 \\ \\ T_2*7=2116.8+1715 \\ \\ T_2=\frac{2116.8+1715}{7} \\ T_2=547.4\text{ N} \\ \end{gathered}\)Thererfore the tension T2 = 547.5 N
• ANSWER:
T1 = 530.6 N
T2 = 547.4 N
Select all the correct answers.
An unmanned spacecraft leaves for Venus. Which statements about the spacecraft's journey are true?
O
The weight of the spacecraft keeps changing.
The mass of the spacecraft keeps changing.
The weight of the spacecraft remains the same.
The mass of the spacecraft remains the same.
The gravitational pull on the spacecraft remains the same.
An unmanned spacecraft leaves for Venus. The statements, The weight of the spacecraft keeps changing and The mass of the spacecraft remains the same. This 2 statements A and D are true.
What is Spacecraft ?A spaceship is a machine or vehicle built to travel through space. Spacecraft are a form of artificial satellite utilised for a wide range of tasks, such as communications, Earth observation, meteorology, navigation, space colonisation, planetary exploration, and freight and person transfer. All spacecraft, with the exception of single-stage-to-orbit vehicles, need a launch vehicle (carrier rocket) to get into space.
A spacecraft that is performing a sub-orbital spaceflight launches into space and then lands without gaining enough momentum or energy to complete a full orbit of the Earth. Spacecraft enter confined orbits around the Earth or other celestial bodies for orbital spaceflights. Only humans are carried on human spacecraft either as crew or guests from launch or while in orbit (space stations).
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if a man pushes a lawn mower with a force of 20 lb a distance of 60 feet down a yard how many ftlbs of work did he do
The work is given by:
\(W=Fd\)Plugging the values given we have:
\(W=(20)(60)=120\)Therefore the man do 120 ft*lb of work
5. A mineral called Iron pyrite forms crystals that are shaped like rectangular boxes. One such crystal is 8.6 - 10-meters tall, 5.0.10-2 meters wide, and 7.8. 10-2 meters deep. Ignoring
significant figures, what is the volume of this rectangular crystal?
1.366.10 m
3.354. 10-m
1.366. 10-
3.354.10
the volume of this rectangular crystal is 3.354 × 10⁻⁴ m³.
Option b) 3.354 × 10⁻⁴ m³ is the correct answer.
Given the data in the question;
Length of the rectangular box \(=8.6 * 10^{-2} m\)
Width of the rectangular box \(=5.0 * 10^{-2} m\)
Depth of the rectangular box \(=7.8 * 10^{-2} m\)
Now, we know that formula for calculating the volume of a rectangular box or prism is;
Volume = Length × Width × Height or depth
So, we simply input our given values into this formula
\(Volume = ( 8.6 * 10^{-2}) ( 5.0 * 10^{-2}) ( 7.8 * 10^{-2})\)
\(Volume = 0.0003354 m\)
\(Volume = 3.354 * 10^{-4} m^3\)
Therefore, the volume of this rectangular crystal is 3.354 × 10⁻⁴ m³
Option b) 3.354 × 10⁻⁴ m³ is the correct answer.
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how is the frictional force produced?
Answer:
frictonal force due to the surface of irregularities
In 1993, the gold reserves in the United States were about 8.490 × 106
kg. If all
that gold were made into a thick wire with a cross-sectional area of 1cm2
, its
total resistance would be about 6.60 × 102 Ω. If the same operation were
applied to the gold reserves of Germany, France, and Switzerland, the
resistances would be 2.40 × 102 Ω, 2.00 × 102 Ω, and 2.00 × 102 Ω,
respectively. Now consider all four resistors connected as shown in the circuit
diagram below. Find the equivalent resistance.
The equivalent resistance of the circuit is 65.98 Ω.
What is Resistor?
A resistor is an electrical component that limits or regulates the flow of electrical current in a circuit. It is designed to provide a specific amount of resistance to the flow of electrons, measured in ohms, and is typically made of a material that can resist the flow of electricity, such as carbon or metal. Resistors are used in a wide range of electronic devices and circuits, from simple LED flashers to complex computer systems.
To find the equivalent resistance of the circuit, we need to use the formula for resistors in parallel:
1/Req = 1/R1 + 1/R2 + 1/R3 + 1/R4
where Req is the equivalent resistance, and R1, R2, R3, and R4 are the resistances of the four resistors.
Substituting the given values, we get:
1/Req = 1/6.60 × 102 + 1/2.40 × 102 + 1/2.00 × 102 + 1/2.00 × 102
1/Req = 0.01515
Req = 65.98 Ω
Therefore, the equivalent resistance of the circuit is 65.98 Ω.
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All the atoms/elements came from where including yourself
God created all things in the beginning of time
Explanation:
He said the things he wanted to make an they came into existence.
Im christian so if u dont like the answer or get mad i'm sorry i couldnt help you
Please help!! I'll name you brainliest!!
Answer:
Has the same properties as it's parts
Explanation:
Which has more kinetic energy, a 4.0 kg bowling ball moving at 1.0 m/s or a 1.0 kg
bocce ball moving at 4.0 m/s? Explain your answer
Answer:
The kinetic energy of bocce ball is more.
Explanation:
Given that,
Mass of a bowling ball, m₁ = 4 kg
Speed of the bowling ball, v₁ = 1 m/s
Mass of bocce ball, m₂ = 1 kg
Speed of bocce ball, v₂ = 4 m/s
We need to say which has more kinetic energy.
The kinetic energy of an object is given by :
\(E=\dfrac{1}{2}mv^2\)
Kinetic energy of the bowling ball,
\(E_1=\dfrac{1}{2}m_1v_1^2\\\\E_1=\dfrac{1}{2}\times 4\times (1)^2\\\\E_1=2\ J\)
The kinetic energy of the bocce ball,
\(E_2=\dfrac{1}{2}m_2v_2^2\\\\E_2=\dfrac{1}{2}\times 1\times (4)^2\\\\E_2=8\ J\)
So, the kinetic energy of bocce ball is more than that of bowling ball.
the sun is one hundred and fifty million kilometers away from the earth write this as an ordinary whole number
Answer:
150000000
Explanation:
There you go :)
Answer:
150,000,000
Explanation:
150+6zeros=15000000
Can someone help me please? I’ve been trying to solve these questions all day.
#16
If we put a resistor in circuit it will slow the speed of current
Let's check ohms law
\(\\ \rm\Rrightarrow \dfrac{V}{I}=R\)
So if resistance is more current is less#17
Again use ohms law
\(\\ \rm\Rrightarrow V=IR\)
\(\\ \rm\Rrightarrow V\propto I\)
Voltage must be increased