Answer:
The steps are:-
Moderate physical activityVigorous aerobicsVigorous sport and recreationMuscle fitness exerciseFlexibility exerciseAvoiding inactivityBalancing energyHow long will it take a fired shell from a cliff at an initial velocity of 800m/s at an angle 30 degree below the horizontal to reach the ground 150m below
Answer:
0.373 seconds. First, calculate the initial vertical velocity of the shell. 800sin(30) = 800*0.5 = 400 m/s Now the formula for the distance traveled is d = 400 m/s * T + 0.5A T^2 Substituting known values gives.
Explanation:
PLZ MARK ME BRAINLIST GUYSPLZ FOLLOW ME GUYSanswers to anatomy and physiology coloring workbook chapter 7 the nervous system page 142-144
Answer:the nervous system
Explanation:
Anatomy vs Physiology as the Anatomy is the study of the structure of living organisms, while Physiology is the study of the function of living organisms.
What is the nervous system?
Nervous System the nervous system integrates and controls the body's functions through electrical and chemical signaling. Anatomy focuses on the physical makeup of living organisms and their components, such as organs, tissues, and cells.
This includes the external and internal structures of the body, as well as the relationships between these structures. On the other hand, Physiology examines how living organisms perform the functions necessary for life, such as respiration, digestion, circulation, and movement.
Physiology explores the processes and mechanisms behind these functions, including biochemical reactions, electrical and mechanical events, and hormonal regulation.
The nervous system consists of the brain, spinal cord, and a network of nerves that extend throughout the body. It is responsible for collecting, processing, and transmitting information about the internal and external environment to the rest of the body.
The nervous system also regulates the activity of other systems in the body, such as the endocrine, cardiovascular, and respiratory systems.
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if object A has a mass of 100kg and object B has a mass of 50 kg then which will have more inertia
Answer:
object A
Explanation:
this is because Enertia is the resistance of an object to change its initial state of rest or motion DUE TO ITS MASS
SO a heavier object will render more inertia
if you have learnt sound, can you also help me pleaseeee
A tank holding 70 liters of water is heated by a 18000W electric immersion heater. If the specific heat capacity of water is 4200 J/(kg .℃), Calculate the time to change the temperature from 20 Degree Celsius to 100 degree Celsius.
Answer:
1306.67 s
Explanation:
From the question given above, the following data were obtained:
Volume of water = 70 L
Power (W) = 18000 w
Specific heat capacity (C) = 4200 J/g℃
Initial temperature (T1) = 20 ℃
Final temperature (T2) = 100 ℃
Time (t) =?
Next, we shall determine the mass of the water. This can be obtained by converting 70 L to kg. This is illustrated below:
1 L = 1 kg
Therefore,
70 L = 70 Kg
Thus, the mass of the water is 70 kg.
Next, we shall determine the heat energy involved. This is can be obtained as follow:
Mass (M) of water = 70 Kg
Specific heat capacity (C) = 4200 J/g℃
Initial temperature (T1) = 20 ℃
Final temperature (T2) = 100 ℃
Heat Energy (Q) =?
Q = MC(T2 – T1)
Q = 70 × 4200 × (100 – 20)
Q = 294000 × 80
Q = 3520000 J
Thus, the heat energy involved is 3520000 J
Finally, we shall determine the time taken.
Power (W) = 18000 w
Heat Energy (Q) = 3520000 J
Time (t) =?
Power = energy / time
18000 = 3520000 / time
Cross multiply
18000 × time = 3520000
Divide both side by 18000
Time = 3520000 / 18000
Time = 1306.67 s
Dylan has two cubes of iron. The larger cube has twice the mass of the smaller cube. He measures the smaller cube. Its mass is 20 grams, and its density is 7.87 g/cm3. What’s the larger cube’s volume? The larger cube’s volume is about cm3.
Answer:
5.08cm³
Explanation:
Given parameters
The larger cube has twice the mass of the smaller cube
Mass of smaller cube = 20g
Mass of the larger cube = 2 x 20 = 40g
Density of the smaller cube = 7.87g/cm³
Unknown:
Volume of the larger cube = ?
Solution:
Density is the mass per unit volume of substance. For all samples of a substance, the density value is the same.
So, the density of the small and large iron is the same
Density = [tex]\frac{mass}{volume}[/tex]
Volume = [tex]\frac{mass}{density}[/tex]
So;
Volume of larger cube = [tex]\frac{40}{7.87}[/tex] = 5.08cm³
Answer:
5.08cm^3
Explanation:
Give a paragraph on how to become a better leader
Answer:
Anyone can sit in a corner office and delegate tasks, but there is more to effective leadership than that. Effective leaders have major impacts on not only the team members they manage, but also their company as a whole. Employees who work under great leaders tend to be happier, more productive and more connected to their organization – and this has a ripple effect that reaches your business's bottom line
Explanation:
:)
ifif it takes 1-minute for 45 c of charge to pass a point in an electric circuit what is the current through the circuit?
Answer:
45C in a minute is
45/60 C in a second
.75 C in a second is 3/4 of an ampere.
Explanation:
The current through a circuit when it takes one minute for 45C of charge to pass to a point in an electric circuit is 0.75 Ampere.
What is an electric circuit?
The electric circuit: a way for current to travel. A battery or generator is a device that provides energy to the charged particles that make up the current, a device that uses current, such as a lamp, an electric motor, or a computer, and the connecting wires or transmission lines to make up an electric circuit. Ohm's law and Kirchhoff's rules are two fundamental laws that quantitatively define how electric circuits function.
Given information,
The charge, q = 45 coulombs,
the time, t =1 minute
t = 60 sec
A minute at 45C is, In one second, 45/60 C,3/4 of an ampere is equal to 0.75 C per second.
Therefore, the current through a circuit when it takes one minute for 45C of charge to pass to a point in an electric circuit is 0.75 Ampere.
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A steel bridge is 5.5m long. If the linear expansivity of steel is 0.000011/℃, how much will it expand when temperature rise by 10 ℃? Give your answer in cm
Answer:
The expansion of the steel bridge is 0.0605 cm
Explanation:
The given length of the steel bridge, L = 5.5 m
The linear expansivity of the steel bridge, [tex]\alpha_ L[/tex] = 0.000011/°C
The rise (change) in the temperature, ΔT = 10°C
Let, ΔL, represent the expansion of the steel bridge
Given that the linear expansivity, [tex]\alpha_ L[/tex], of a material is the change in the length of a material per unit length of the material per unit change in the temperature, we have;
[tex]\alpha_ L[/tex] = ΔL/(L × ΔT)
∴ ΔL = [tex]\alpha_ L[/tex] × L × ΔT = 0.000011 /°C × 5.5 m × 10 °C = 0.000605 meters
ΔL = 0.000605 meters
The expansion of the steel bridge, ΔL = 0.000605 meters = 0.000605 m × 100 cm/m = 0.0605 cm
N in-ground swimming pool has the dimensions shown in the drawing. It is filled with water to a uniform depth of 3.00 m. The density of water = 1.00 × 103 kg/m3. What is the total pressure exerted on the bottom of the swimming pool? 1.97 × 105 Pa 2.49 × 105 Pa 2.94 × 104 Pa 1.80 × 105 Pa 1.31 × 105 Pa
Answer:
The pressure is [tex]P = 1.31*10^{5} \ Pa[/tex]
Explanation:
From the question we are told that
The depth of the swimming pool is [tex]d = 3.00 \ m[/tex]
The density of water is [tex]\rho = 1.00*10^{3} \ kg /m^3[/tex]
Generally the total pressure exerted on the bottom of the swimming pool is mathematically represented as
[tex]P = P_o + \rho * g * h[/tex]
Here [tex]P_o[/tex] is the atmospheric pressure with value
[tex]P_o = 101325 \ Pa[/tex]
So
[tex]P = 101325 + [1000 * 9.8 * 3][/tex]
=> [tex]P = 130725 \ Pa[/tex]
=> [tex]P = 1.31*10^{5} \ Pa[/tex]
Describe the 3 types of collisions. Then explain how they are alike and different.
What is the direction of the centripetal force when applied to an object?
Answer:
It would move in a line tangent to the circular path
Explanation:
Which option is a compound?
A. Oxygen
B. Carbon
C. Carbon dioxide
D. Air
Answer: Carbon Dioxide.
Explanation: Oxygen and Carbon are both elements, so they can’t be compounds. Air is a mixture of gasses, not a compound.
A 100 kg skateboarder sits at the top of a 10 m halfpipe, ready to go down the ramp. What will be his velocity when
he is 4 m off of the ground?
Answer:
v = 10.85 m/s
Explanation:
We will apply the law of conservation of energy to the skateboarder. Neglecting the frictional effects, the law of conservation of energy can be written as:
[tex]Loss\ in\ Potential\ Energy\ of\ Skateboarder = Gain\ in\ Kinetic\ Energy\ of\ Skateboarder[/tex][tex]mg\Delta h = \frac{1}{2}mv^2\\\\v^2 = 2g\Delta h\\v = \sqrt{2g\Delta h} \\[/tex]
where,
v = velocity of skateboarder = ?
g = acceleration due to gravity = 9.81 m/s²
Δh = change in height = 10 m - 4 m = 6 m
Therefore,
[tex]v = \sqrt{{(2)(9.81\ m/s^2})({6\ m})}}[/tex]
v = 10.85 m/s
The mass of a piece of metal is 1200g A measuring cylinder contains 150cm3 of water. The piece of metal is
put into the measuring cylinder. The water level rises to 250cm3 and covers the metal,
What is the density of the metal?
Answer:
The density of the metal is [tex]12\ gr/cm^3[/tex]
Explanation:
Density
The density of a substance is the mass per unit volume. The density varies with temperature and pressure.
The formula to calculate the density of a substance of mass (m) and volume (V) is:
[tex]\displaystyle \rho=\frac{m}{V}[/tex]
The piece of metal has a mass of m=1200 gr. When the piece of metal is submerged in a measuring cylinder, the water level rises from 150 cm3 to 250 cm3. This means the piece of metal occupies a volume of V=250 cm3-150 cm3=100 cm3.
The density is:
[tex]\displaystyle \rho=\frac{1200}{100}[/tex]
[tex]\rho=12\ gr/cm^3[/tex]
The density of the metal is [tex]\mathbf{12\ gr/cm^3}[/tex]
A cello string is 0.695 m long, and transmits waves at 204 m/s. What frequency does it produce? (Unit = Hz)
Answer:
ν=293.53 Hz
Explanation:
ν= speed/λ
speed = 204 m/s
λ=0.695 m
v = 204 m/s * 1/0.695m
meters cancels out
1/s = Hz
v = 204/0.695 Hz
ν=293.53 Hz
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apparently it is wrong, but my work and online calculator says otherwise... possibly round your answer? I'm not sure then...
Answer:146.75
Explanation:
what is measurnment
Answer:
measurement is the comparison of unknown physical physical quantity with know standard quantity of the same kind .
What scientific law did Archimedes establish? the law of geometry the law of astronomy the law of lever and balance the law of Earth and universe
Answer:
Archimedes discovered the buoyancy laws
Explanation:
when asked by King Hiero of Syracuse to determine whether his new crown was pure gold (SG = 19.3). Archimedes measured the weight of the crown in air to be 11.8 N and its weight in water to be 10.9 N.
Answer:
The correct answer is C
Explanation:
a skier starts at rest at the top of a hill with 350 J of gravitational potential energy. Assuming energy is conserved, what is her final kinetic energy at the lowest point
Answer:
350Joules
Explanation:
According to law of Conservation of energy, the amount of energy at the used up at the start is equal to that at the end.
The initial energy used up is gravitational potential energy
Final energy at the lowest point is kinetic energy.
If the energy is conserved then it means energy is not used up during the process hence;
Initial Potential energy = Final kinetic energy
If the gravitational potential energy is 350Joules then her final kinetic energy at the lowest point will also be 350Joules
Water boiling
Which one is shown? (Look at pic)
Answer:
conduction.
Explanation:
Hoped I helped! Im Eve btw have a great day and consider marking this brainliest if you do thank you in advanced!
A student designs an experiment to demonstrate the conservation of gravitational potential and kinetic energy. She drops a wooden block from rest through a photogate 2 m below. If energy is conserved, how fast should the block be traveling when it passes through the photogate?
A.
2.0 m/s
B.
6.3 m/s
C.
9.8 m/s
D.
19.6 m/s
Answer:
6.3 m/s
Explanation:
A student drops a wooden block from rest through a photogate 2 m below. Since there is a conservation of the gravitational potential energy and the kinetic energy, the final speed of the block is B. 6.3 m/s.
Gravitational potential energy and kinetic energyGravitational potential energy: is the potential energy a massive object has in relation to another massive object due to gravity.Kinetic energy: is a form of energy that an object or a particle has by reason of its motion.A wooden block is dropped from rest. If energy is conserved, the initial gravitational potential energy (U₁) will be equal to the final kinetic energy (K₂).
U₁ = K₂
m × g × h₁ = 1/2 × m × v₂²
where,
m is the mass of the object.g is the gravity.h₁ is the initial height.v₂ is the final speed.m × g × h₁ = 1/2 × m × v₂²
g × h₁ = 1/2 × v₂²
v₂ = √(2 × g × h₁)
v₂ = √(2 × (9.8 m/s²) × 2 m) = 6.3 m/s
A student drops a wooden block from rest through a photogate 2 m below. Since there is a conservation of the gravitational potential energy and the kinetic energy, the final speed of the block is B. 6.3 m/s.
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Which of the following is an example of velocity?
O a. 2 m/s
O b. 25 N
O c. 55 miles per hour South
O d. 2m/s2 west
Answer:
C
Explanation:
b is 55 miles per hour south or 55mph[South]
the important part to understand is that velocity is a vector meaning it also has to have a direction, in this case south. That is why a (2m/s) is not a velocity, however 2m/s is a speed.
An earthquake sends a seismic wave through the ground. What is the
medium? ANSWER QUICK!
Answer:
THE GROUND IS THE MEDIUM OF SEISMIC WAVES
What would most likely cause the future acceleration of the expansion of the universe
Radiation
The existence of background radiation
Light shifts identified by Doppler effect
Answer:
never scared
that might help you
How do minerals crystallize or form in veins ?
Answer:
For example, when magma heats water deep underground, elements and compounds in the surrounding rock will dissolve in the water, forming a solution. ... The cooling process causes them to crystalize and form minerals inside the rock. These are called veins
A tourist stands at the top of the Grand Canyon, holding a rock, overlooking the valley
below. Find the final velocity, and displacement of the rock after 4.0 seconds give the three
initial conditions listed below.
Answer:
a. Vf = 39.24 [m/s]
b. Vf = 31.24 [m/s]
c. Vf = 47.24 [m/s]
Explanation:
To solve this problem we can use the following equation of kinematics. We have to keep in mind that the gravitational acceleration acts downwards, therefore when the rock falls towards the abyss it has the same direction of the acceleration and that is why the gravitational acceleration has a positive sign in the equation.
[tex]v_{f}=v_{o}+g*t[/tex]
where:
Vf = final velocity [m/s]
Vo = initial velocity = 0 (when the rock is dropped)
g = gravitational acceleration = 9.81 [m/s²]
t = time = 4 [s]
a.
[tex]v_{f}=0+9.81*4\\v_{f}= 39.24 [m/s][/tex]
b.
In this particular situation, the acceleration will be taken as negative because the gravity is pointing in the opposite direction of the movement of the rock.
[tex]v_{f}=8-(9.81*4)\\v_{f}=-31.24[m/s][/tex]
The negative sign in the answer tells us that the rock no longer moves up instead it does downwards when 4 seconds have passed.
c.
[tex]v_{f}=8+(9.81*4)\\v_{f}=47.24[m/s][/tex]
Explain how to change the pitch of the sound produced by a violin string when it is plucked or rubbed with the bow.
Answer:
Sound is produced by moving the bow over the string or by plucking it with the right hand. Pitch alterations are achieved by pressing down the string with the fingertips of the left hand on the fingerboard. This shortens the vibrating portion of the string and raises the pitch
Explanation:
what is the correct answer?
Answer:
4
Explanation:
I added all of them and them minus the 5.
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.5 m>s. Two seconds later the bicyclist hops on his bike and accelerates at 2.4 m>s2 until he catches his friend. (a) How much time does it take until he catches his friend
Answer:
4.28 s
Explanation:
after two seconds (2 s) His friends is
d = 3.5 m/s x 2 s = 7 meter ahead.
in this state, a bicylist start from initial velocity vo = 0 m/s and accelerat 2.4 m/s²
then, when bicylist reach his friend
t friend = t bicyclist = t
d bicylist = d friend + d
-------
d friend = 3.5 . t
d bicylist = vo . t + ½ a t²
d friend + d = vo . t + ½ a t²
3.5 t + 7 = 0 . t + ½ . 2.4 . t²
3.5 t + 7 = 1.2 t²
0 = 1.2 t² - 3.5 t - 7
t = -1.363 and t = 4.28
take the positive one
Why do scientists use models? A.To collect and record data through the scientific method B.To explain difficult concepts and show how things work C.To make conclusions based on experiments D. To observe small objects and make them look larger
Answer:
The most correct option here is B
Explanation:
Models are usually used in science in order to proffer or explain difficult concepts of the real/actual "subject". The model to be used must have some level of similarity (usually high) with the actual subject. The use of model helps to explain how certain things work in the actual subject. Actual subjects are sometimes eventually used later after convincing experiments (showing "positive" results) must have been done on the model.
From the explanation above, it can be deduced that the correct option is B
A woman has a mass of 55 kg on earth. what would be the women's weight on the moon? (The moon’s gravity is 1.6 N).
Answer:
i dont know the answer sorry have a good day
Explanation:
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