Answer:
The direction in which they rotate is determined by the hemisphere in which they are located. The main overall global wind patterns, the rotation of the Earth, and the shape of ocean basins are the three major factors that decide surface currents.
Oceanic factors are Tempature, salinity, density, pressure gradient and melting of ice. Atsmopheric factors are atsmopheric pressure, winds, rainfall, evaporation and insolation
A hockey puck slides across the ice with an initial velocity of 7.3 m/s .It has a decleration of 1.1 m/s and is traveling towards the goal 5.0 m away .How much time does the goalie have to stop the puck?
Answer:
t = 6.63 s
Explanation:
Given that,
Initial velocity of the puck, u = 7.3 m/s
Deacceleration of the puck, a = -1.1 m/s²
Distance traveled, d = 5 m
We need to find the time the goalie have to stop the puck. Using equation of motion.
v = u +at
v = 0 (stops)
So,
[tex]u=-at\\\\t=\dfrac{u}{-a}\\\\t=\dfrac{7.3}{-(-1.1)}\\\\t=6.63\ s[/tex]
So, the required time is 6.63 seconds.
Which phrases apply to the formation of the Grand Canyon?
Choose all that apply.
medium scale
medium scale
long-term
long-term
small scale
small scale
short-term
short-term
large scale
large scale
Answer:
Large scale
Explanation:
short term
which diagram represents the greatest magnitude of displacement for an object
Answer: if every arrow=1m do 1 times 1 times 1 times 1
Explanation:
(p.s. it equals 1 meter in area 4 meters in perimeter)
What is the net force in the y-direction?
0 N
25 N
225 N
250 N
The correct option is (1) 0 N.
Net force in the y direction is 0 if the vector sum of your forces acting in the y direction is zero.The forces acting on an item are balanced when the net force is zero. Two forces that are acting in the same direction cancel one another out. An item will always remain at rest if the forces are out of balance.Formula of net force -
FNet = Fa + Fg + Ff + .............. FN.
Definition of force
The word 'force' has a precise meaning. At this level, it is completely appropriate to describe a force as a push or a pull.
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Una mujer recorre una trayectoria rectilínea en su camioneta primera una velocidad constante de 50 km/h luego a 70 km/h y después de 60 km/h durante su trayecto a su trabajo ¿cuál será la velocidad promedio?
Answer:6/1 %50 x11
Explanation:
25-45
In 1965, a group of students wore black arm bands to school in protest of American policies in Vietnam. Administrators banned the wearing of armbands on school grounds; however, the students wore them again and were suspended. A lawsuit followed, and the case was eventually taken to the Supreme Court.
Answer:
protected under students first amendment rights
Explanation:
did the studyisland :)
there is T__ as much voltage. This
produces twice the current
An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move from left to right. nearly vertically upward. counter-clockwise around the celestial pole. from right to left.
Answer:
counter clockwise
Explanation:
The observer in the Northern Hemisphere will notice that the stars near the NCP to move counter-clockwise
Counter - clockwise : The observer will observe this because the earth movement when viewed from the North pole is in a counterclockwise direction, hence the stars will appear to move in an ant-clockwise direction
If the maximum moment of force on a door is 10 Nm by an applied force of 2.25 N, then the distance of handle
Answer:
d = 4.44 m
Explanation:
Given that,
The moment of force on a door = 10 N-m
The applied force, F = 2.25 N
We need to find the distance of the handle. The moment of force is given by :
[tex]\tau=F\times r[/tex]
Where
r is the distance of the handle.
[tex]r=\dfrac{\tau}{F}\\\\r=\dfrac{10}{2.25}\\\\r=4.44\ m[/tex]
So, the required distance is equal to 4.44 m.
What is the equivalent resistance of the circuit?
Answer:
Option D. 5.45 Ω
Explanation:
From the question given above, the following data were obtained:
Resistance 1 (R₁) = 10 Ω
Resistance 2 (R₂) = 20 Ω
Resistance 3 (R₃) = 30 Ω
Voltage (V) = 120 V
Equivalent resistance (R) =?
The equivalent resistance can be obtained as follow:
1/R = 1/R₁ + 1/R₂ + 1/R₃
1/R = 1/10 + 1/20 + 1/30
Find the least common multiple (lcm) of 10, 20 and 30. The result is 60
Divide 60 by each of the denominators and multiply by their numerators respectively. We have:
1/R = (6 + 3 + 2)/60
1/R = 11/60
Invert
R = 60/11
R = 5.45 Ω
Thus, the equivalent resistance in the circuit is 5.45 Ω
WILL GIVE BRAINLIST QUICK!!! How does biodiversity support different varieties of species? (please put short answer)
State Newton's first law of motion .
Answer:
dis mans newton says if a body is at rest or moving at a constant speed in a straight linne it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force
Answer:
Newtons first law of motion states that"A body will continue to its state of rest or motion unless external force acted upon it.
The oxygen side of a water molecule is
Use the graph. Which time period was
the car moving the fastest?
Answer:
1,2,3,4
Explanation:
Rank the ten objects from loudest to softest.
PLEASE HELP ME ASAP!!!
Answer:
90
Explanation:
The portion where gas turns to liquid
Which three parts of the graph’s curve represent the solid, liquid, and gaseous state of water? Explain your reasoning.
B,C,D maybe
Explanation:
plz dont get mad
What kind of energy involves the flow of positive charges?
thermal
radiant
electrical
nuclear
Answer:
Electrical
Explanation:
Electrical would be the energy that involves the flow of positive charges.
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Answer:
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What has increased the concentration of atmospheric carbon dioxide (CO2)?
Answer:
Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy.
Astronomers build optical telescopes on tops of mountains because a. there is less air to dim the light. b. the seeing is better. c. CCDs work better with a beautiful mountain view. Astronomers build optical telescopes on tops of mountains because a. there is less air to dim the light. b. the seeing is better. c. CCDs work better with a beautiful mountain view. all choices, a, b and c choice c only choice a only choice b only choices a and b
Answer: choices a and b
Explanation:
Telescope can be defined as am optical instrument which is designed to observe the distant objects clear and nearer. It comprises of arrangement of lenses which allow the rays of light to be collected. The collected light is focused and the image so produced is magnified in the form of an image. The telescopes are prepared and manufactured on mountains top as this will help in preventing the distortion of light obtain from the star due to the fluctuation of air mass in the atmosphere. The atmospheric distortion affects the resolution, and affects the vision. The atmospheric pressure is low at the mountain tops so it will help in better observation of the sky.
half life, for my physics but pretty sure it involves maths. you don’t have to do them all i’m just confused how to work it out.
I probably don't have to tell you that the other answer is nonsense, but I'll do it all the same, just in case... Half-life is defined as the time it takes for some radioactive substance to decay to half its original amount.
If it takes n half-lives for some substance with a starting amount of A to decay to a final amount of B, then
[tex]B = \dfrac{A}{2^n}[/tex]
1. If the half-life is x, then after 1 half-life, 5000 units of this substance decays to 2500 units. After another half-life, this decays to 1250. After another, this in turn decays to 625.
So 3 half-lives are required.
In terms of the equation above, we solve for n such that
[tex]625 = \dfrac{5000}{2^n} \implies 2^n = 8 \implies n=3[/tex]
since 2³ = 8.
2. Count how many times you halve 15,000 to end up with 3750:
15,000/2 = 7500
7500/2 = 3750
===> 2 half-lives
In other words,
[tex]3750 = \dfrac{15,000}{2^n} \implies 2^n = 4 \implies n=2[/tex]
3. After 1 half-life, you would end up with
12,000/2 = 6000
and after another half-life,
6000/2 = 3000
i.e.
[tex]\dfrac{12,000}{2^2} = \dfrac{12,000}4 = 3000[/tex]
4. After 1 half-life, you have
26,000/2 = 13,000
After 2 half-lives,
13,000/2 = 6500
After 3 half-lives,
6500/2 = 3250
After 4 half-lives,
3250/2 = 1625
i.e.
[tex]\dfrac{26,000}{2^4} = \dfrac{26,000}{16} = 1625[/tex]
5. If the half-life is 3 years, then 15 years = 3 half-lives.
In the last 3 years, 20,000 would have decayed to 10,000.
In the second-to-last 3 years, 40,000 would have decayed to 20,000.
In the first 3 years, 80,000 would have decayed to 40,000.
i.e.
[tex]\dfrac{x}{2^3} = 10,000 \implies x = 8\times10,000 = 80,000[/tex]
Use the drop-down menus to identify the order of these images for the formation of our solar system. A collapsed nebula flattens into a disc. A collapsed solar nebula. An image of our solar system. nebula. An image of our solar system.
Answer: 2 1 3
is your answer
Explanation:
your'e welcome
Answer:
First one = 2
Second one = 1
Third one = 3
Explanation:
2 1 3
can i get brainliest I need it please
Which statement compares the attractive forces that hold particles together?
A. Covalent bonding and Van der Waals forces join separate
molecules together, while ionic and hydrogen bonding produce
compounds.
B. Covalent and hydrogen bonding produce compounds, while ionic
bonding and Van der Waals forces join separate molecules
together.
C. lonic and covalent bonding produce compounds, while hydrogen
bonding and Van der Waals forces join separate molecules
together.
D. Ionic and covalent bonding join separate molecules together, while
hydrogen bonding and Van der Waals forces produce compounds.
Answer:
Ionic and covalent bonding produce compounds, while hydrogen bonding and Van der Waals forces join separate molecules together.
Ur welcome:)
Answer:
C) lonic and covalent bonding produce compounds, while hydrogen bonding and Van der Waals forces join separate molecules together.
Explanation:
How many lobes are in the lungs
Answer:
There are 5 lobes in the lungs.
Explanation:
The right lung consists of three lobes: the RUL, the RML, and the RLL. While the left lung consists of two lobes: the LUL, and the LLL.
An air mass that is moving from the north pole toward the equator would be turned to the ? because of the spinning of the earth on its axis
(finish the question by putting in the correct word where the ? is)
Answer:
An air mass that is moving from the north pole toward the equator would be turned to the East because of the spinning of the earth on its axis
Explanation:
An air that is moving from the North pole toward the equator will be turned to the East (right) because of the spinning of the earth around its own axis.
What is the Coriolis effect?The Coriolis Effect can be described as an apparent effect generated by a rotating frame of reference. The effect takes place when an object moving along a straight path can be viewed from a non-fixed frame of reference.
The moving frame of reference is the one in which the Earth rotates at a fixed speed. The Coriolis effect creates wind patterns near the earth’s surface, that move to the east toward the equator and to the west toward the poles. These wind patterns are responsible for moving clouds around the globe and creating weather patterns.
Coriolis force can be described as a fictitious force resulting from the rotational movement of the earth. It only affects the wind direction and not the wind speed. The magnitude of Coriolis force can be calculated from the wind speed.
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Metals allow electrons to flow through and complete the circuit. Therefore they are called?
Answer:
the answer would be conductors
A tungsten wire is 1.5m long and has a diameter of A current of flows through the wire. The resistivity of the wire is 5.6 * 10 ^ - 8 What is the potential difference across the ends of the wire?
Complete Question:
A tungsten wire is 1.5 m long and has a diameter of 1.0 mm. A current of 60 mA flows through the wire. The resistivity of the wire is 5.6 * 10^-8 Ωm. What is the potential difference across the ends of the wire?
Answer:
Potential difference, V = 0.00642 Volts.
Explanation:
Given the following data;
Diameter = 1 mm to meters = 1/1000 = 0.001 m
Length = 1.5m
Current = 60mA = 60/1000 = 0.06 Amperes.
Resistivity = 5.6 * 10^-8 Ωm
To find the potential difference across the ends of the wire;
First of all, we would determine the cross-sectional area of the wire (circle);
[tex] Radius, r = \frac {diameter}{2} [/tex]
[tex] Radius = \frac {0.001}{2} [/tex]
Radius = 0.0005 m
Area of wire (circle) = πr²
Substituting into the above formula, we have;
Area = 3.142 × (0.0005)²
Area = 3.142 × 2.5 × 10^-7
Area = 7.855 × 10^-7 m²
Next, we find the resistance of wire;
Mathematically, resistance is given by the formula;
[tex] Resistance = P \frac {L}{A} [/tex]
Where;
P is the resistivity of the material.
L is the length of the material.
A is the cross-sectional area of the material.
Substituting into the formula, we have;
[tex] Resistance = 5.6 * 10^{-8} \frac {1.5}{7.855 * 10^{-7}} [/tex]
[tex] Resistance = 5.6 * 10^{-8} * 1909611.712 [/tex]
Resistance = 0.107 Ohms.
Now, we can find the potential difference using the formula;
[tex] V = IR[/tex]
Where;
V represents voltage or potential difference measured in volts.
I represents current measured in amperes.
R represents resistance measured in ohms.
Substituting into the formula, we have;
[tex] V = 0.06*0.107[/tex]
Potential difference, V = 0.00642 Volts.
plz help me
Your friend has a mass of 70 kg and is running at a velocity of 3 m/s. What is their kinetic energy?
Answer:
TINAAA
Explanation:
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