Answer:
Hadley cells
Explanation:
Formation of Convection Currents
Atmospheric convection currents are global patterns of air movement that are initiated by the unequal heating of Earth. Hadley cells- the convection currents that cycle between the equator and 30˚ north and south.
2. Kymel is competing to see who is the fastest runner on the football team. Kymel uns
from rest to a speed of 4 m/s when he reaches the 20 meter mark in just 2 minutes.
What was Kymel's acceleration during the run?
a. 2 m/s2
b. 30 m/s2
c. 0.5 m/s2
d. 0.03 m/s2
PsX
Answer:
3
Explanation:
I just really need points man sorry
Which example is of researcher bias in interpreting data?
A scientist wishes to determine the area of an ice sheet. To do so, he relies on spectrographic images sent by satellite.
A health official investigates the spread of HIV in her city. She takes a census of the HIV status of every adult resident.
A geologist wants to determine whether the water level of an aquifer is declining. To find the answer, he digs a well.
A researcher seeks to prove that babies smile at two months old. She counts some confused expressions as smiles.
Answer:
A researcher seeks to prove that babies smile at two months old. She counts some confused expressions as smiles.
Explanation:
This is the answer because its not actual date due to the fact she's using her opinion to decided whether or not the expression a baby is making is a smile, whereas the other answers had factual data involved.
what is the average velocity of a car that travels 30 kilometers due west in 0.50 hour
The average velocity of a car that travels 30 kilometers due west in 0.50 hour - 60 km/hour west.
Average velocity is the displacement of an object with the time change. To find the average speed of an object we divide the distance travelled by the time elapsed.
Velocity is a vector quantity and average velocity can be found by dividing displacement by time.Average velocity is defined as the change in position or displacement (∆x) divided by the time intervals (∆t) in which the displacement occursAverage velocity = ∆x/∆t
Then,
average velocity = 30/0.5
= 300/5
= 60
Thus, the correct answer would be - 60 km/hour west.
Learn more about:
https://brainly.com/question/862972
How long does a dream typically last near the end of the sleep cycle, just before waking?
A.
about 5 minutes
B.
about 15 minutes
C.
about 30 minutes
D.
about 50 minutes
pleaseeeee hurryy
Answer:
C) about 30 minutes
Explanation:
edge 2023
Which type of thermal energy transfer does a foil wrapping reduce the most? O A. Conduction O B. Translation O C. Radiation O D. Convection
The foil reduces radiation the most in terms of thermal energy transfer. Thermal energy transfer is the movement of heat from one place to another. The four types of thermal energy transfer are radiation, conduction, convection, and advection. The correct answer is option OC.
Foil wrapping reduces radiation as the most type of thermal energy transfer. Thermal energy transfer is the movement of energy from one place to another. There are four types of thermal energy transfer: conduction, convection, radiation, and advection. The foil wrapping reduces radiation the most. When there is a foil wrapped around food, the foil traps the heat inside the food, which reduces the radiation energy transfer. Radiation is the heat transfer that occurs in the form of electromagnetic waves. It requires no matter to move, which is why it can occur in the vacuum of space. Radiation transfer can be absorbed, transmitted, or reflected. Therefore, the correct answer is option OC.For more questions on radiation
https://brainly.com/question/31285748
#SPJ8
To study the dependant variable, a scientist must A. manipulate the independent variable B. have more than one control group C. manipulate the dependent variable D. have more than one experimental group
Answer:
A
Explanation:
Answer:
A. manipulate the independent variable
Help Plsss
Which of the following objects are subject to the law of universal gravitation? (circle all that apply)
a. Satellites
b. Water
c. Frogs
d. Stars
Mark has a ball. He tosses it into the air. In 3.7 seconds, it falls to the ground. Why did this happen to Mark's ball? Explain.
Mark's ball falls to the ground because there is a gravitational pull from Earth's core. There are chemicals and elements in the Earth that make this pull. Mark's ball does not stay in the air for this reason.
Hope this helps you!
Answer:
This happened because there is a gravitational pull.
Explanation:
An object traveling at a constant velocity has no net force. True or False
What makes an electric charge?
Answer:
Most electric charge is carried by the electrons and protons within an atom. Conversely, two protons repel each other, as do two electrons. Advertisement. Protons and electrons create electric fields, which exert a force called the Coulomb force, which radiates outward in all directions.
Alan travels 100 km in 5hrs. Find his average speed in km/h
Answer:
The answer is 20 km/hrExplanation:
The average speed of an object given the time and distance covered can be found by using the formula
[tex]a = \frac{d}{t} \\ [/tex]
where
d is the distance
t is the time
From the question
d = 100 km
t = 5 hrs
We have
[tex]a = \frac{100}{5} \\ [/tex]
We have the final answer as
20 km/hrHope this helps you
Lisa has a mass of 52 kilograms. How much does Lisa weigh in Newtons? How much does she weigh in pounds? (Use g = 9.8 m/s)
Answer: 510 in Newton’s and 115 lbs
Explanation:
Considering the definition of weigh, Lisa weighs 0.5096 N or 0.1146 pounds.
Mass is the amount of matter that a body contains, while weight is the action exerted by the force of gravity on the body. That is, weight is a measure of how much force gravity exerts on the mass of an object.
The mass of an object will always be the same, no matter where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.
Weight can be calculated as the product of mass and acceleration due to gravity:
W=m×g
In this case, you know:
m= 52 g= 0.052 kg (being 1000 g=1 kg)g=9.8 m/s²Replacing in the definition of weigh:
W=0.052 kg×9.8 m/s²
Solving:
W= 0.5096 N
1 newton equals 0.2248 pound. Then W=0.5096 N= 0.1146 Pounds
Finally, Lisa weighs 0.5096 N or 0.1146 pounds.
Learn more:
https://brainly.com/question/24906415The density of water is 1.00 g/cm3. The density of ethanol is 0.80 g/cm3. What is the volume of ethanol, in cm3 that has the same mass as 100 cm3 of water?
Explanation:
Given that,
The density of water is 1 g/cm³
The density of ethanol is 0.8 g/cm³
We need to find the volume of the ethanol that has the same mass as 100 cm³ of water.
Density=mass/volume
For water,
[tex]d=\dfrac{m}{V}\\\\m=dV\\\\m=1\ g/cm^3\times 100\ cm^3\\\\m=100\ g[/tex]
For ethanol,
[tex]d=\dfrac{m}{V}\\\\V=\dfrac{m}{d}\\\\V=\dfrac{100\ g}{0.8\ g/cm^3}\\\\V=125\ cm^3[/tex]
Hence, 125 cm³ of ethanol has the same mass as 100 cm³ of water.
Answer:
1.00 g/cm3
Explanation:
True or False? Mechanical waves do NOT need a medium to travel through.
Answer:
True
Explanation:
Mechanical waves require a medium in order to transport their energy from one location to another.
How much energy must be absorbed by water with a mass of 0.5 kg in order to raise the temperature from 30°c to 65°C?
Water has a specific heat of 4,190 j/kg°C
Answer:
Q = 67.04 [J]
Explanation:
In order to solve this problem, we must use the following equation of thermal energy, which relates mass to specific heat and temperature change.
[tex]Q = m*c_{p}*(T_{2} -T_{1})[/tex]
where:
Q = thermal energy [J]
m = mass = 0.5 [kg]
Cp = specific heat = 4,190 [J/kg°C]
T2 = final temperature = 65 [C]
T1 = initial temperature = 30 [C]
Now replacing:
Q = 0.5*4.190*(65 - 30)
Q = 67.04 [J]
Define Fundamental unit and Derived Unit
HELP PLEASE!!! is this right? if not please tell me the right answer
write the equation for calculating relative velocity in one dimensional.
Answer:
Your answer is correct, Option B
Which is a true statement about a series circuit?
A.) Every part of the circuit is positively charged.
B.) The current flow through every part of the circuit is the same.
C.) The current through the circuit can take several paths.
D.) Every part of the circuit is negatively charged.
Please help, I'm on a time limit!
the answer is B your welcome
The true statement about a series circuit is: the current flow through every part of the circuit is the same. Hence, option (B) is correct.
What are series and parallel circuit?Electrical networks and two-terminal components can be linked either serially or parallelly. The electrical network that results will have two terminals and be capable of operating in either a series or parallel topology.
It depends on your point of view whether a two-terminal "thing" is an electrical network (like resistors connected in series) or an electrical component (like a resistor). In this article, a two-terminal "thing" that participates in series/parallel networks will be referred to as a "component."
Each component connected in series travels the same "electrical path" and carries the same amount of current—equal to the network's current—through it.
Learn more about series circuit here:
https://brainly.com/question/14997346
#SPJ2
answer these questions plz
1. The property of a conductor by virtue of which it posses the flow of electric current through it is called resistance.
2. The resistance of a conductor depends on the cross sectional area of the conductor and it's resistivity.
3.This id due to the fact that the resistance of a wire is inversely proportional to the square of its diameter.
4.Due to at high temperatures , the alloy donot oxidize. Alloy doesn't melt readily and get deformed.
1 a rectangular block of steel measures 4cm * 2cm* 1.5cm. its mass is 93 .6g
a) calculate the density of steel
b)steel is made up of almost entirely of atoms butt is denser than iron
suggest a reason for this
a) density = 93.6g/12cm³
= 7.8g/cm³
b) The reason is alloying
Explanation:
volume of the rectangular block = l× b × h
= (4 × 2 × 1.5)cm
= 12 cm³
density = mass/ volume
mass = 93.6g
volume = 12cm³
therefore,
density = 93.6g/12cm³
= 7.8g/cm³
b) °Steel is formed when alloying Iron with carbon.
°Alloying improves the physical properties of the metals and non-metals
What is the weight of a 4.5 kg mass on Earth?
Answer:
7.535×10^25 earth mass
Explanation:
for an approximate result,divide the mass value by 9.223e+18
Waves that make up the visible part of the electromagnetic spectrum have
Answer:
the visible part of the electromagnetic spectrum is somewhere between 2 and 10 1.24 eV and x rays 1 to 12 keV
Explanation:
the visible part of the electromagnetic spectrum is somewhere between 2 and 10 1.24 eV and x rays 1 to 12 keV
the volume of a cube is 64 meter cubic. what is the length of the side of the cube?
A 0.142 kg baseball on a 0.8 meter table has 1.11 J of potential energy. It falls. How much kinetic
energy, in Joules, will it have on the way down when it reaches a height of 0.25 meters? Assume
mechanical energy is conserved.
Answer:
0.04544 J
Explanation:
KE= 1/2 the mass times V squared
KE=1/2(0.142) * (0.8)^2
KE= 0.071 * 0.64
KE=0.04544
For every ______
there is an equal and opposite ______.
a. interaction & action b. action & reaction
c. action & interaction
It's Action and Reaction
HELP PLEASE!
write the equation for calculating relative velocity in one dimensional.
Anwer:
Key Equations
Position Vector: `n r (t) = (t)^j+y
Total acceleration: `n a = `n aC
+ `n aT
Position Vector in frame S is the position Vector in frame S` plus the vector from the origin of S to the origin of S`: `n rPS = `n rPS`
+ `n rS`S
Relative velocity equation connecting two references frame: `n vPS = `n vPS`
+ `n vS`S
story on where there is a will there's a way
Someone please help me!!!
Answer:
i don’t understand
Explanation:
Answer:
There's no question-
A child’s toy arrow is launched horizontally from a bow at a speed of 8 m/s from a second story window 4 meters above the ground, and the sticks in a pile of sand.
A. How far away is the pile of sand?
B. What were the horizontal and vertical speeds of the arrow when it hits the sand?
C. What angle does the arrow make with the ground when it sticks in the sand?
How many hours would it take a plane to fly 1,500 miles if it was moving at a constant speed of 400 miles/hour.
It would take 3 hours and 45 minutes, for a plane to fly 1,500 miles if it was moving at a constant speed of 400 miles/hour.
Calculation
Round off 3.75 to the nearest one to give the hour value i.e., 3.The minutes are obtained by multiplying the fractional portion of the decimal value by 60, or 0.75 x 60 = 45.we have 3 hours and 45 minutes.What is speed?The distance traveled in a unit of time is called speed. It refers to a thing's rate of movement.This scalar quantity known as speed is the velocity vector's magnitude, It has no clear direction.A faster rate of movement is indicated by a higher speed. It is travelling more slowly if the speed is lower. It has zero speed if it isn't moving at all.The formula: can be used to determine the constant velocity of an object traveling straight forward.r = d / twhere,
r stands for rate or speed (sometimes denoted as v, for velocity)
d is the traveled distance.
t is the amount of time needed to finish the movement.
The average speed of an object over a period of time is given by this equation. We can see the object's average speed here, however at some moments over the time frame, it may have been moving faster or slower.As the time interval gets closer to zero, the maximum average speed is reached. The speed at that moment is what you see when you look at a speedometer in an automobile. While you may have briefly reached a speed of 60 mph, your average speed over the course of 10 minutes could have been much higher or much lower.M/s is the SI unit of speed (meters per second). Miles per hour or kilometers per hour are the most widely used units of speed in everyday life. A typical speed at sea is in knots, or nautical miles per hour.To learn more about speed, refer to https://brainly.com/question/24739297
#SPJ2