Answer:
Heart rate monitor I think
Explanation:
you would know how intense the pedaling is by knowing your heart beat rate as of the pedaling is so intense your heart beat increases and if it was not so much your pedaling is not so intense.
This works also for any other sports .
~--Hope this helped--~
Answer: it’s Heart rate monitor
Explanation:
you use a heart rate monitor to check your intensity level by seeing how fast your heart goes
The blackbody curve for a star named Zeta is shown below. What is the peak wavelength for this star?
impossible to tell because the scale for intensity is missing
0 nm
860 nm
3,010 nm
We are asked for the x coordinate of vertex
Here vertex is present somehow at 850-870nm
The most applicible answer should be 860nm
Option C is correct
Research indicates that high serotonin levels may increase aggression. please select the best answer from the choices provided t f
The statement 'research indicates that high serotonin levels may increase aggression' is FALSE.
What is serotonin?Serotonin is a chemical messenger (i.e., a hormone) used to transmit messages through the body.
Serotonin is generated by the nerve cells (neurons) of the central nervous system (CNS).In conclusion, the statement 'research indicates that high serotonin levels may increase aggression' is FALSE.
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Select all the correct answers. a silver coin rubs vigorously against a wool cloth. the cloth becomes positively charged. which statements are true? the silver coin lost electrons. the silver coin gained electrons. the wool cloth lost electrons. the wool cloth gained protons. the wool cloth lost protons.
The true statements are, the silver coin lost electrons and the wool cloth lost protons.
What is a positive charge?A positive charge is an ion with excess proton. In this process the atom deficient number of electron as compared to protons.
When a silver coin is rubbed vigorously against a wool cloth, the silver coin which is a metal will loss electron, having excess number of protons and becomes positively charged in the process.
Thus, the true statements are;
the silver coin lost electrons and the wool cloth lost protons.
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in what unit do we measure electric current?
Answer:
Ampere
Explanation:
The SI unit of electric current is Ampere (A) after French physicist Andre Ampere who discovered electrical current
Why we do not have a solar eclipse during every ""new moon"" phase.
Answer:
The solar eclipse stopped years ago due to the moon, sun, and earth's alignment not being able to sync like it did before.
A year is the time it takes a planet to complete one orbit. use your data to estimate the year length for each planet. use time units of earth years or earth months. why does it take the outer planets so long to orbit the sun? try to come up with 2 reasons.
The planets of the solar system has the orbiting time.
Mercury- 88 days, Venus-225 days, Earth- 365 days, Mars-687 days, Jupiter- 12 years, Saturn- 29 years, Uranus- 84 years, Neptune- 165 years, Pluto- 248 years.
What is solar system?Solar system consists of all the planets and the most importantly the center of the solar system is Sun.
Sun is the main focus of the solar system. It emits high temperature light rays on the planets which in turn emit lights and be visible.
Outer planets take longer to orbit the sun because the gravitational pull is weaker as shown in the inverse square law.
The outer planets very far away from the Sun, means that they have more distance to cover in their orbit.
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What can spectroscopes tell us about a space object?
A. provide imagery
B. calculate location
C. determine temperature, chemical composition, and speed
D. determine temperature, chemical composition, and size
Answer:
The answer is C.
Explanation:
Spectroscopy can be very useful in helping scientists understand how an object like a black hole, neutron star, or active galaxy produces light, how fast it is moving, and what elements it is composed of.Answer:
[tex]\huge\boxed{\sf Option \ 3}[/tex]
Explanation:
Spectroscope:The device used to tell the properties of the spectral lines in an electromagnetic spectrum is called spectroscope. Properties of spectroscope:For any space object, spectroscope tells:Type of element the object is made of.Temperature of object.Chemical composition.SpeedMagnetic and electric field.Spectroscope also can tell the light intensity and their wavelength.[tex]\rule[225]{225}{2}[/tex]
An object of mass weighing 5.24 kilograms is raised to a height of 1.63 meters. What is the potential energy of the object at that height? Note that acceleration due to gravity is 9.8 meters/second2.
A.
65 joules
B.
84 joules
C.
91 joules
D.
1.0 × 102 joules
E.
1.5 × 102 joules
Answer:
84 joules
Explanation:
potential energy = mgh
5.24×1.63×9.8
= 84 joules
Assuming we receive a signal from a civilization on the other side of our galaxy, a two-way conversation with them is ________.
A sound wave has a frequency of 265 hz and a wavelength measured at 1.3
m. the speed of the wave is 344.5 m/s.
how long will it take the wave to travel the length of a football field, which
is 91.4 m?
Answer:
V = f λ speed of wave in terms of frequency and wavelength
t = S / V time for wave to travel a distance S
t = 91.4 m / 344.5 m/s = .265 sec time to travel 91.4 m
Truck
1 point
When you hit a rock on your bike, you fly forward over the handle bars. Which law does this best describe?
Newton's First Law
Newton's Second Law
Newton's Third Law
Newton's Law of Gravity
Answer:
I think it is Newton's law od gravity
Explanation:
a force of 50 N directed 30 degrees above the horizontal is applied to a 10 kg block at rest on a rough horizontal surface. what is the coefficient of kinetic friction between the block and the horizontalsurface if the acceleration of the block is 20 m/s^2
The coefficient of kinetic friction between the block and the horizontal surface will be 1.597.
What is kinetic friction?A force that acts among sliding parts is referred to as kinetic friction. A body moving on the surface is subjected to a force that opposes its progressive motion.
The given data in the problem is;
μ is the coefficient of kinetic friction=?
m is the mass of the block=10 kg
g is the acceleration due to gravity= 9.81 m/s²
Acceleration of block(a)=20 m/s²
Force (F)= 50 N
θ=30°
There are two forces to act on the block, one is the force directed while the other was the friction force opposing the motion.
From the newton's second law;
F= ma
F-f = ma
Fcos30°- μmg=ma
50cos 30°-μ× 10×9.81 =10 × 20
μ= 1.597
Hence, the coefficient of kinetic friction will be 1.597.
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A taser sends about 1100 V through the human body, resulting in an average current of 2.5 mA. a) Determine the Power output of the taser. b) How much charge (C) flows per second? c) How many electrons flow through the body per second when the taser is deployed through someone's body?
This question involves the concepts of current, power, and charge.
a) The power of taser is "2.75 watt".
b) The magnitude of charge flow per second "2.5 x 10⁻³ C/s".
c) Electrons flow per second is "1.56 x 10¹⁶ electrons/s".
a) PowerThe power of the taser can be given by the following formula:
P = IV
where,
P = Power = ?I = current = 2.5 mA = 2.5 x 10⁻³ AV = potential difference = 1100 VTherefore,
P = (2.5 x 10⁻³ A)(1100 V)
P = 2.75 Watt
b) Charge Flow per Second
The charge flow per second is equal to the current passing through taser.
[tex]\frac{q}{t}=I[/tex]
where,
[tex]\frac{q}{t}[/tex] = charge flow per second = ?I = current = 2.5 mA = 2.5 x 10⁻³ ATherefore,
[tex]\frac{q}{t}=2.5\ x\ 10^{-3}\ C/s[/tex]
c) Electron Flow per SecondThe electron flow per second is given by the following formula:
[tex]I = \frac{q}{t} = \frac{ne}{t}\\\\\frac{n}{t}=\frac{q}{te}[/tex]
where,
[tex]\frac{n}{t}[/tex] = electrons flow per second = ?e = charge on one electron = 1.6 x 10⁻¹⁹ CTherefore,
[tex]\frac{n}{t}=\frac{2.5\ x\ 10^{-3}\ C/s}{1.6\ x\ 10^{-19}\ C}\\\\\frac{n}{t}=1.56\ x\ 10^{16}\ electrons/s[/tex]
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An airplane is flying in a horizontal circle at a speed of 490 km/h. If its wings are tilted at angle ɵ = 45° to the horizontal, what is the radius of the circle in which the plane is flying? Assume that the required force is provided entirely by an “aerodynamic lift” that is perpendicular to the wing surface.
The radius of the circle in which the plane is flying is 1887 m.
What is aerodynamic lift?The aerodynamic lift is the force that keeps the aircraft flying in the air.
Let the aerodynamic lift be F1 sinθ= mv^2/R ---- (1)
and F1 cosθ= mg --------- (2)
Equating (1) and (2) and eliminating the mass;
R = v^2/ g tanθ
Where v = 490 km/h or 136 m/s
R = (136)^2/9.8 * tan 45
R = 18496/ 9.8
R = 1887 m
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How much power is produced if you have a current carrying a 441 j of enegy in 0.19 s?
Answer:
the answer is 2321 watts
Explanation:
power= energy/time
power= 441/0.19=2321.05watts
Which of the following is LEAST likely to be the result of a genetic mutation?
A
A horse with a particularly long neck
B
A man with a beard
С
An albino squirrel
D
A plant that produces fewer seeds than normal
Answer:
B. man with a beard
Explanation:
it is not a genetic mutation because it is completely natural and common unlike the other options.
if nominal gdp is 1800 and the money supply is 450, then what is velocity?
Answer:
Explanation:
answer: 4 velocity.
if nominal gdp is 1800 and the money supply is 450, then what is velocity?
4 velocity.
If the nominal GDP is 1800 and the money supply is 450, then the velocity of money would be 4.
The total value of goods and services generated in an economy during a given time period, usually a year, is referred to as nominal GDP and is not adjusted for inflation. It depicts what products and services are now selling on the market.
Given:
Nominal GDP, PQ = 1800
Money supply, M = 450
From equation of exchange:
MV = PQ
V = (PQ) ÷ M
V = (1800) ÷ (450)
V = 4
Hence, if the nominal GDP is 1800 and the money supply is 450, then the velocity of money would be 4.
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We observe the wheels of buses and trucks are heavier than the wheels of cars and scooters why.
Answer:
they carry a heavier load
Explanation:
Answer:
The wheels of buses and trucks are heavier than the wheels of car or scooters because the buses and trucks are heavy and require to exert less pressure. We know that when pressure decreases an area of contact increases, so the tires are broadened so that they exert less pressure on the road and move easily.
Explanation:
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IF THE CAPACITOR HAS PLATE AREA OF 0.2m² AND DISTANCE BETWEEN THEM IS 0.04 m. What is the capacitance if dielectric constant is E=0.001 C/VM.
please i need it hurry if correct mark u brainliest.please hurry.
[tex]\\ \rm\Rrightarrow C=\dfrac{\epsilon_oA}{d}[/tex]
[tex]\\ \rm\Rrightarrow C=\dfrac{0.2(0.001)}{0.04}[/tex]
[tex]\\ \rm\Rrightarrow C=\dfrac{0.0002}{0.04}[/tex]
[tex]\\ \rm\Rrightarrow C=0.005F[/tex]
[tex]\\ \rm\Rrightarrow C=5mF[/tex]
Explanation:
Given data :
Given data :Plate area = 0.2m^2
Given data :Plate area = 0.2m^2Distance between plates=0.04m
Given data :Plate area = 0.2m^2Distance between plates=0.04mdielectric constant = 0.001 C/vm
Given data :Plate area = 0.2m^2Distance between plates=0.04mdielectric constant = 0.001 C/vmRTF=Capacitance.
Given data :Plate area = 0.2m^2Distance between plates=0.04mdielectric constant = 0.001 C/vmRTF=Capacitance. SolutionGiven data :Plate area = 0.2m^2Distance between plates=0.04mdielectric constant = 0.001 C/vmRTF=Capacitance. SolutionFirst formula for capacitance .
C= E A/ DC= 0.001 × 0.2 0.04C = 0.0002 0.04C = 0.005 FC = 5mF
Starting from rest on a level road a girl can reach a speed of 5 m/s in 10s on her bicycle. Find average speed and distance traveled in 10s.
Answer:
Average speed = 2.5 mph
Distance = 22.352 meters
Explanation:
Calculate speed, distance or time using the formula d = st, distance equals speed times time.
Calculate speed, distance or time using the formula d = st, distance equals speed times time.
You can use this formula for any question like this
Please help me guys please help please
Answer:
C = frequency × wavelength, where C is the speed of the photons which is the speed of light ~3×10^8
frequency = C/wavelength
f = 3×10^8/400×10^-9m
f = 3/4 × 10^15Hz
f = 0.75×10^15Hz
f = 7.5×10^14Hz
The crossbar of a goalpost is 10 feet high. If a field goal is made 25 yards from the base of the goalpost that clears the goal by 1 foot, what is the smallest angle of elevation at which the ball could have been kicked to the nearest degree?.
Answer: 1 degree
Explanation: I looked it up.
The mass of the Moon is 7.35 × 1022 kg and its radius is 1738 km. What is the gravitational field strength on the surface of the Moon?
Answer:
g = 1.62 N/kg
Explanation:
g = GM/r²
= (6.67 x 10⁻¹¹ x 7.35 x 10²²) / (1738 x 10³)²
= 1.62 N/kg
Hope this helps!
Motion
Force
Which property of the ball is constant?
speed
acceleration
direction
momentum
The property of the ball that is constant is acceleration because the rate of it's distance is constant.
What is constant acceleration?Constant acceleration refer to the rate of the velocity of the body that is moving at constant rate or when the rate of change of distance of an object with respect to time is constant.
Therefore, The property of the ball that is constant is acceleration because the rate of it's distance is constant.
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a man pulls a sled horizonally by exerting 64 Lb on teh rope that is tied to its front endd. if the rope makes an angle of 45 dgrees with horizontal, find the work done in moving teh sled 35 feet
The work done in moving the sled 35 feet when force is aligned from the horizontal is 1583.9 lb.ft
What is work done?Work done is equal to product of force applied and distance moved.
Work = Force x Distance
W = Fs cos θ
Given is the distance d =35 ft ,the force exerted F = 64lb and the angle of force from the horizontal direction is 45°.
Substituting the values, work done will be
W =64 x 35x cos 45°
W = 1583.9 lb.ft
Thus, the work done will be 1583.9 lb.ft
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NAME:
A room has a 60 Watt, a 100 Watt and a 150 Watt light bulb. How much does it
cost to use all the lamps for 2.5 hours at $0.08/ kWh?
E-60
Answer:
$ .0248 or 2.48 cents
Explanation:
60 + 100 + 150 = 310 watts
for one hour = 310 watt- hr or .31 kw- hr
.31 kw-hr * .08 / kw-hr = .0248
Explain how the motor takes advantages of electromagnetism to work?
Compare the mass on neptune (68.11) to the weight on neptune (905.863). what is the difference? why is there a difference?
While 75-kg Anthony roller skates at 3 m/s, 60-kg Sue jumps into his arms with a velocity of 5 m/s. How fast does the pair go together?
Velocity: m/s
Direction:
inelastic collision
75.3+60.5=(75+60)v'
225+300=135v'
v'=3.8 m/s
direction = positive = right
Select the statements that apply in order to complete the model (you can choose multiple answers).
a) the products must equal the reactants.
b) one diatomic oxygen should be removed from the reactant side.
c) one unbonded carbon atom should be added to the product side of the equation.
d) one carbon atom and two oxygen atoms are needed to balance the equation.
e) one carbon dioxide molecule should be added to the product side of the equation.
The statement a,d and e are correct. The chemical equation must be balanced.
What is a chemical reaction ?One or more compounds, known as reactants, are transformed into one or more distinct substances, known as products. Such a process is known as a chemical reaction.
The given equation is;
[tex]\rm CH_4+2O_2 \arrow \rightarrow CO_2+2H_2O[/tex]
The statements that apply in order to complete the model is;
a) The products must equal the reactants.
d) One carbon atom and two oxygen atoms are needed to balance the equation.
e) One carbon dioxide molecule should be added to the product side of the equation.
Hence, statement a,d and e are correct.
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