Answers
Answer:
SO ANSWER AGRE AS FOLLOWS:
Explanation:
A. Wind is the movement of air, caused by the uneven heating of the Earth by the sun and the Earth's own rotation. Winds range from light breezes to natural hazards such as hurricanes and tornadoes.
B.At night, the roles reverse. The air over the ocean is now warmer than the air over the land. The land loses heat quickly after the sun goes down and the air above it cools too. ... This causes the low surface pressure to shift to over the ocean during the night and the high surface pressure to move over the land.
HOPE THIS IS CORRECTRelated Questions
Kitty is pushing her shopping trolley along the ground. She applies a constant force to move the trolley 4 m horizontally. If she does 32 J of work, calculate how much force she is applying.
Answers
Answer:
the constant force applied by Kitty is 8 N.
Explanation:
Given;
work done by Kitty, W = 32 J
distance moved by Kitty's trolley, d = 4 m
Let the constant force applied by Kitty = F
The work done by Kitty is calculated as follows;
W = F x d
F = W / d
F = 32 / 4
F = 8 N.
Therefore, the constant force applied by Kitty is 8 N.
Identify the TRUE statements about energy.
A; Energy can transform from electrical energy to heat.
B; Energy can be created and destroyed.
C; Higher potential energy can change into higher kinetic energy.
D; Energy changes are 100% efficient.
Answers
Answer:
A, C, D
Explanation:
A, C and D are true.
B is false as energy can neither be created nor destroyed.
Temperature of an object is 250 K. Find its temperature in centigrade.
help me in this assignment
Answers
Answer:
T = 526°C
Explanation:
Given the following data;
Temperature in Kelvin = 250K
To convert kelvin to centigrade;
Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F)
Mathematically, it is given by the formula;
250 = 273 + C
Substituting into the equation, we have;
C = 273 + 250
T = 526°C
True or false- it is possible for a given substance to absorb one frequency of light and reflect a different frequency.
Answers
Answer:
FALSE
Explanation:
To answer this question we must clarify that for a given approach to exist there must be a transition between two atomic levels of the material.
For the emission, the transition between two determined states must also occur, therefore the radiation emitted is equal to that absorbed.
Consequently the statement is False
What is Justice according to philosophy
Answers
Answer:
justice. just in nature.
Explanation:
the concept of a proper proportion between a person's deserts (what is merited) and the good and bad things that befall or are allotted to him or her. ... Aristotle's discussion of the virtue of justice has been the starting point for almost all Western accounts.
What is the origin of cold, wet air masses?
A. Over water in tropical zones
B. Over land in polar regions
C. Over land in tropical areas
D. Over water in polar regions
Answers
Answer:
b
Explanation:
if it's over land and in polar region it's B
Answer:D
Explanation:
trust me
Which of the following statements about mechanical energy is NOT true?
O Gravitational potential energy is a type of mechanical energy.
Kinetic energy is a type of mechanical energy.
O Mechanical energy is the energy an object possesses due to its motion or its position.
O A bungee cord is not an example of mechanical energy.
Answers
So the one about bungee cord is not true
When the north poles of two magnets are kept close , they will __________
attract
rotate
repel
remain unaffected
Answers
repel
repel
repel
Two charges of 5 x 10-6 C are a certain distance apart. These two positive charges experience 3.6 N of repelling electrical force between them. How far apart are these charges?
Answers
Answer:
25 cm
Explanation:
F = k q₁q₂/r²
Substituting values : let the distance be x.
3.6 = (9 x 10^9) (5 x 10^(-6) (5 x 10^(-6)) / x²
3.6 = (225 x 10^(9-6-6) )/x²
3.6 = (225 x 10^(-3) / x²
x² = 225/3.6 x 10^(-3)
x² = 62.5x10x10^(-4) [10^(-3)=10x10^(-4)]
x = √(625 x 10^(-4) )
x = 25 x 10^(-2)
Or, x = 25 cm
How many antinodes are present in harmonic 3
Answers
Answer:
a total of four nodes and three antinodes
Explanation:
please tell me if im incorrect i will fix it asap.
What is the minimum force required to increase the energy of a car by 84 J over a distance of 38 m? Assume the force is constant.
Group of answer choices
84 N
2.2 N
3200 N
120 N
0.45 N
Answers
Answer:
2.210N
Explanation:
Workdone = Force x distance
Distance = 38m , Workdone = 84J
Hence 84J = Force x 38m
Force = 84J / 38m
Force = 2.210N =2.2N
which scientists describes an atom as a mass of positive charges containing negative electrons
Answers
Ernest Rutherford
I’d appreciate it if you marked me brainliest
Answer:
it was Ernest Rutherford
The potential energy of a 45 kg cannon ball is 15000 J. How high was
the cannon ball to have this much potential energy?
Answers
Answer:
33.3
Explanation:
Potential energy =
mass × gravitational field strength × height
rearranged =
[tex] \frac{potential \ energy}{mass \: \times gravity} = height[/tex]
[tex] \frac{15000}{45 \times 10} [/tex]
(The earths gravitational field strength will always be 10)
=33.33333 recurring to 1dp its 33.3
How do you think heat gets from a filament to the kernel?
Answers
Answer:
Explanation:
It goes thru the fluma
Calculate the density of mass 150 grams and volume 35 〖cm〗^3
Answers
Explanation:
Mass =150g = 0.15kg
Volume= 35cm^3 = 0.35m^3
Density= Mass×Volume
= 0.15kg × 0.35m^3
= 0.05 kg m^3
Choose the way that machine may change force...
Doc Below
Answers
fjfjfj
Explanation:
rufifiriirifieif
Answer:it’s all of the above for the ck-12
Explanation:
I should limit the number of carbohydrates leat, as often as possible, to avoid gaining weight. * 2 True O False
Answers
Answer:
I THINK it's True
Explanation:
Because...
you can get fat...
a rail car moving at 10m/s collides with and connect to another stationary car. What is their final velocity?
Assume they have the same mass
Answers
Answer:
read this it might help some
When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.
Explanation:
In which area of a street should cyclists ride?
Answers
Answer:
the same side as cars are traveling
:)
8. Calculate the impulse of a 14kg rock that starts at rest and falls to a speed of 6m/s?
Answers
Answer:
84 kgm/s
Explanation:
mvf - mvi = impulse
(14kg)(6m/s) - (14kg)(0m/s) = 84 kgm/s
a 30 kg cart is travelling in a zero friction environment at a constant velocity of 5m/s. It's about to go up a very steep hill. How high will the cart be when the velocity changes to zero? PLEASE HELP
Answers
Answer:
1.27551m
Explanation:
This is a simple energy convertion problem. Since there is no friction, and assuming no air drag and other external factors, mechanical energy should be conserved in this system.
Thus, we get:
[tex]KE_{initial} + PE_{initial} = KE_{final} + PE_{final}[/tex]
We also know that the gravitational potential energy is equal to mgh, while the KE can be calculated using [tex]\frac{1}{2}mv^2[/tex]
One thing to note here, is that the final KE will be 0, as there is no velocity at the end. Furthermore, we also can set the initial PE as 0 as we are looking at relative height, and at the start it is at h=0.
[tex]KE_{initial} = PE_{final}[/tex]
Plugging in:
[tex]\frac{1}{2}*30*5^2 = 30*9.8*h[/tex]
Solving for h, we get 1.27551m
Body language is (peer counseling)
the way you make words with your hands
the way you make words by nodding your head
the way you speak by blinking your eyes tightly
the way you speak with your entire body
Answers
Answer:
the way you speak with your entire body
Explanation:
Body language is the way you speak with your entire body. Therefore, the correct option is option D.
What is body language?Body language refers to a form of communications in which information is expressed or conveyed via bodily behaviors rather than words. Face expressions, body posture, movements, eye movement, touch, and use of space are examples of this type of behavior.
Although the phrase "body language" is typically used in reference to people, it can also be used in reference to animals. Kinesics, another name for the research of body language, is related. Although facial expression is a crucial component of communication, much of it occurs subconsciously. Body language is the way you speak with your entire body.
Therefore, the correct option is option D.
To know more about body language, here:
https://brainly.com/question/14759337
#SPJ2
You want to create a space station that is 50 meters in radius. If you want it to simulate Earth's gravitation, how fast must it go?
Answers
Answer:
w = 0.196 rad / s
Explanation:
To generate an acceleration similar to that of the earth, the station's centripetal acceleration must be equal to the acceleration due to gravity.
a_c = v² / r = w² r
a_c = g
we substitute
g = w² r
w² = g / r
w = [tex]\sqrt { \frac{g}{r} }[/tex]
let's calculate
w = √9.8/50
w = 0.196 rad / s
therefore the station must rotate at that angular velocity so that the acceleration in the outer wall is equal to the ratio of gravity
2. 3000. kg car is moving across level ground at 5.0 m/s when it begins an
acceleration that ends with the car moving at 15.0 m/s. Is work done in this
situation? How do you know?
Answers
Answer:
yes
Explanation: Work is done when there is movement. Therefore it was work was being done.
When will an object falling toward earth stop accelerating
Answers
Answer:
Hope this helps!
Explanation:
As an object falls, it picks up speed. The increase in speed leads to an increase in the amount of air resistance. Eventually, the force of air resistance becomes large enough to balances the force of gravity. At this instant in time, the net force is 0 Newton; the object will stop accelerating. An object falling toward earth stop accelerating when it velocity becomes terminal velocity. Or When weight becomes equal to Drag force acting on the object due to air resistance.
Compare the Force for helmet with base radius of 10 cm vs helmet with 30 cm
Answers
Answer:
Explanation:
i literlly have no idea
A semi-truck as mass of 40 000 kg and is traveling at 80.0 km/h, south. What is
it's momentum? *
A. 210,000 kg m/s
B. 880,000 kg m/s
C. 3,200,000 kg m/s
D. 440,000 kg m/s
Answers
Explanation
Which facility relies on a no renewable source of energy
Answers
Answer:
Coal
Explanation:
Circle the letter of each sentence that is true about calculating the
acceleration of a moving object.
A.) If an object is moving without changing direction, then its acceleration is the change in its speed during one unit of time.
B.) If an object's speed changes by the same amount during each unit of
time, then the acceleration of the object at any time is the same.
C.) To determine the acceleration of an object, you must calculate the
change in velocity during only one unit of time.
D.) If an object's acceleration varies, then you can describe only average
acceleration.
Answers
Answer: D
Explanation:
How many calories are produced when 50 ml of water is raised from 22 degrees celsius to 52 degrees celsius?
Help it’s due today
Answers
Answer:1500 calorie
Explanation:
Given
volume of water [tex]V=50\ ml[/tex]
Initial temperature [tex]T_i=22^{\circ}C[/tex]
Final temperature [tex]T_f=52^{\circ}C[/tex]
We know,
specific heat of water is [tex]c=1\ calorie/gm-^{\circ}C[/tex]
the density of water is [tex]\rho=1\ gm/ml[/tex]
The heat required to raise the temperature
[tex]\Rightarrow Q=mc\Delta T\\\Rightarrow Q=\rho \cdot V\times c\times \Delta T\\\Rightarrow Q=1\times 50\times 1\times (52-22)\\\Rightarrow Q=1500\ cal.[/tex]
1500 calories is required