Select ALL the items that are influenced by jet streams.
Lesson 1.08
Select 2 correct answer(s)
Question 15 options:
atmospheric chemistry
precipitation
temperature
car travel
Answer:
precipitation and tempurature
Explanation:
i just took the quiz
Answer:
B.precipitation
C.temperature
Explanation:
hope this helps! :D
3 students push on a 60kg Box, they each exert a 25 N force. What is the box’s acceleration if they all push in the same direction
Answer:
Acceleration = 1.25 m/s²
Explanation:
Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.
Given the following data;
Force applied = 25 N
Mass = 60kg
The net force acting on the box = 25 + 25 + 25 = 75N
To find the acceleration;
Net force = mass * acceleration
Substituting into the equation, we have;
75 = 60 * acceleration
Acceleration = 75/60
Acceleration = 1.25 m/s²
chris and molly wins $2400 in a competition they share the money in the ratio2:3 how much money do they each receive ?
Answer:
chris gets 960 and molly gets 1440
Explanation:
add the ratio up and divide
2+3=5
2400/5=480
480x2=960
480x3=1440
960+1440= 2400
The amount of electrons that an atom loses, shares or gains is the ________________.
to start something moving, a push force must be ______ than resisting forces such a friction. what word complets the gap?
Answer:
To start something moving, a push force must be greater than resisting forces such a friction.
Explanation:
The force of resistance, for example friction, slows things down, so the push force must be greater in order to increase the speed or to start something moving.
Please help!! I'll thank everyone and give brainliest to the best/correct answer!!!
Using your knowledge of fluid pressure, explain why your ears hurt more and more as you dive deeper and deeper underwater.
Answer:
Ear pain is the most common complaint from scuba divers. Some divers call it "ear squeeze." As a diver goes deeper under water and the outer environment pressure increases, the pressure in the middle ear (the part behind the ear drum) is "squeezed" by the increasing pressure of the water from outside
b. Local action and polarization
Explanation:
The local action of a battery is the deterioration of the battery due to currents that are flowing from and to the same electrode. ... Polarization is a defect that occurs in simple electric cells due to the accumulation of hydrogen gas around the positive electrode.
are forces present even when there is no movement?
Answer:
Yes, gravitational force is everywhere. Even if you don't move or move, or wherever you are, there is gravitational force.
Work out the wavelength in Meters with a frequnecy of 300 MHz and speed of 3 × 10^8 m/s.
Answer:
1 m
Explanation:
The following data were obtained from the question:
Frequency (f) = 300 MHz
Velocity (v) = 3×10⁸ m/s
Wavelength (λ) =?
Next, we shall convert 300 MHz to Hz. This can be obtained as follow:
1 MHz = 10⁶ Hz
Therefore,
300 MHz = 300 MHz × 10⁶ Hz / 1 MHz
300 MHz = 3×10⁸ Hz
Thus, 300 MHz is equivalent to 3×10⁸ Hz.
Finally, we shall determine the wavelength of the as follow:
Frequency (f) = 3×10⁸ MHz
Velocity (v) = 3×10⁸ m/s
Wavelength (λ) =?
v = λf
3×10⁸ = λ × 3×10⁸
Divide both side by 3×10⁸
λ = 3×10⁸ / 3×10⁸
λ = 1 m
Therefore, the wavelength is 1 m
How is the sun energy important to the earth
Why didn’t the liquid methane change phase before 2007?
The basic reason is that before 2007 their were not enough energy in the liquid methane molecules to break the bond between them after 2007 the energy of the molecules increases which breaks the bond and the liquid methane changes phase.
Why didn’t the liquid methane change phase before 2007?It had been summer since 2002, but the lake didn’t evaporate until 2007.
The molecular attraction between methane molecules is stronger the amount of energy absorbed by liquid methane was not enough to break the inter molecular forces until 2007.
After 2007, the sun had transferred enough energy so that the kinetic energy of the methane molecules increased enough to overcome the attraction between them.
The liquid methane evaporated and the molecules started moving away from each other.
Thus the liquid methane starts to change phase after 2007 by getting enough energy from the sun.
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A 15kg boulder is moved from the Earth to the Moon. Explain what happens to the mass and weight of the boulder.
Answer:
The mass of the boulder remains constant, while its weight decreases with respect to the value of gravitational force on the moon.
Explanation:
The mass of the boulder = 15 kg
On the earth, its mass remains 15 kg. But its weight is;
weight = m x g
= 15 x 9.8
= 147 N
The boulder's weight on the earth is 147 N.
When transferred to the moon, the mass remains constant i.e 15 kg. But its weight decreases due to a change in the value of acceleration due to gravity on the moon. Thus, the boulder becomes lighter in weight.
Question If a force of 2N is used to move a box 1 meter, how much work was done to move the box?
Answer:
I assume that the force of 2N is applied along the direction of motion and was applied for the whole 1 meter, the formula of work is this; Work = force * distance * cosθ where θ is zero degrees. Plugging in the data to the formula;
Explanation:
Work = 2N * 1m * cos 0º.
Work = 2N * 1m * 1
Work = 2Nm
Work = 2 joules
HELP PLEASE!!!
a= ?
v=
r=
Answer:
[tex]a=\frac{v^2}{r}[/tex]
[tex]v=\sqrt{a*r}[/tex]
[tex]r=\frac{v^2}{a}[/tex]
Explanation:
This is the formula for centripetal acceleration in terms of the tangential velocity (v) and the radius of the circular motion (r). The expression for the acceleration is already given, so simply type it as shown:
[tex]a=\frac{v^2}{r}[/tex]
For the velocity (v) multiply by "r" both sides and then use the square root to solve for v:
[tex]a*r=v^2\\v=\sqrt{a*r}[/tex]
For the radius multiply both sides by r and then divide both sides by the acceleration (a) in order to isolate r completely:
[tex]a*r=v^2\\r=\frac{v^2}{a}[/tex]
A football is thrown with an acceleration of 15 m/s^2 and a force of 13 N. What is its mass?
A.150 kg
B. 0.87 kg
C. 2.0 x 105 kg
D. 0.12 kg
A man carries a 25 kg box 5 meters across the room. How much work is being done?
Answer:
Given :-Mass = 25 kg
Height = 5 m
Acceleration due to gravity = 10 m/s
To Find :-Work done
Solution :-We know that
W = mgh
W = 25 × 5 × 10
W = 250 × 5
W = 1250 J
[tex] \\ \\ \\ [/tex]
PLEASEE HELPPLook at the diagram of two students pulling a bag of volleyball equipment. The friction force between the bag and the floor is 4 N. What is the net force acting on the bag? What direction is the bag moving in?
Answer:
The net force is 21 N, and the bag will go to the right.
Explanation:
You can find the net force by adding both values of the boy and the girl, and then subtracting four from it. You can also figure out which direction its moving by looking at which side is exerting the most force, which would be the right side.
Hope it helps!
Section 1 - Question 3
Electromagnetic energy can be used in the medical field to treat various diseases. In order for electromagnetic energy to be used for this purpose, it must be able to be targeted to very specific cells within
the body
Which of the following are characteristics of this type of electromagnetic energy
A
low frequency, short wavelength
B
low frequency, long wavelength
С
high frequency, short wavelength
CD
high frequency, long wavelength
Answer:
D
Explanation:
Waves with long wavelength and low energy are used more in medical field. High energy waves are hazardous to cells. Hence, option B is correct.
What are electromagnetic waves ?Electromagnetic waves are waves that can pass through vacuum as well as through a medium. They are associated with an electric field and magnetic field.
The electromagnetic waves which are longer in wavelength are radio waves, microwaves and IR. They have low frequency and lower in energy. Short wavelength high energy waves are UV, x-rays and gamma rays.
In medical field long wavelength waves are more used to treat disease such as cancer. Radio waves are used to treat cancer. High frequency, high energy waves are more used in diagnostic purposes. Such as in x-rays, detection of cancer cells etc.
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Troy, Xavier, and Emmitt are all football players. They decide to race each other up the bleachers one day. They take off running and Troy makes it to the top of the bleachers in 10 seconds, beating Emmitt by three seconds and beating Xaiver by five seconds. The bleachers are approximately 50 meters tall. Troy weighs approximately 1200 N, Emmitt weighs approximately 1750 N, and Xaiver is approximately 2100 N.
how do we use sounds in ways other than just listening?
Answer:
talking and we can make our own sound
Explanation:
Sound could be an element for detecting people or entities, This is very useful for blind people. Sounds could also heal your chakra or make you feel like dancing.
Hope I helped. :)
- Valenteer
Fill in the blank: A _____ is dissolved by a solvent
When a runner hits the ball and makes it around all bases safely to Home Base without getting tagged out it is called a?
Answer:
Home run
Explanation:
i play
What is the mathematical equation for the electric force between two charges? Identify each variable.
Answer: F=kq1q2/r2
"F" is the resulting force between the two charges. The distance between the two charges is "r." The "r" actually stands for "radius of separation" but you just need to know it is a distance. The "q1" and "q2" are values for the amount of charge in each of the particles.
Explanation:
The mathematical equation for the electric force between two charges will be ,[tex]\rm F = \frac{K q_1q_2}{r^2}[/tex]. It is a type of attractive force.
What is electric force?The electric force between the two charges is directly proportional to the product of the charge and inversely proportional to the square of the distance between them.
The electric force is found as;
[tex]\rm F = \frac{K q_1q_2}{r^2}[/tex]
q₁ is the magnitude of charge 1
q₂ is the magnitude of charge 2
k is the proportionality constant
r is the separated distance
F is the electric force
Hence, the mathematical equation for the electric force between two charges will be ,[tex]\rm F = \frac{K q_1q_2}{r^2}[/tex]
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Please help
What is the angle of the reflected ray in the diagram above?
ANSWER ASAP!!!!!
Chemotherapy is used to treat many types of cancer. A researcher discovers that modifying treatment by
altering the dosage of a group of drugs and incorporating radiation therapy increases the effectiveness
in treating a particular type of cancer.
Read the information above. How should the researcher proceed?
A. He should request an interview with a representative from a major newspaper.
B. He should keep his findings secret to prevent them from being misused.
C. He should report his findings to a reputable science journal.
D. He should encourage doctors nationwide to use the new course of treatment.
Answer:
He should report his findings to a reputable science journal.
A round ball is kicked into the air at an angle of 39 degrees above the horizontal. The
initial velocity of the ball is 32 m/s.
A. How long is the ball in the air?
B. What is the horizontal distance traveled by the ball?
C. What is the maximum height reached by the ball?
Answer:
b
Explanation:
A guitar string 0.750 m long has a fundamental frequency of 440 hz. The guitarist wants to accent the 5th harmonic by picking at the first loop from the end of the string for this harmonic. How far from the end of the string (cm) should she pick?
Answer: a b c or d
Explanation
At 30 degrees C, 90 grams of NaNO3 is dissolved in 100
grams of water. Is this solution SATURATED,
UNSATURATED, BOTH, or NEITHER
At 30 degrees C, when 90 grams of NaNO3 is dissolved in 100 grams of water, the solution becomes UNSATURATED.
A saturated solution is a solution that doesn't completely dissolve the solute.
An unsaturated solution is a solution that has a lesser amount of solute than the saturated solution in which it is being dissolved. Thus, the solute will be completely dissolved in the solution at the end of the reaction process.
From the given information:
NaNO3(salt) is the solutewater is the solvent.Since the mass of the solute is lesser than the solvent. It implies that the solute will dissolve completely in the solvent.
Therefore, the solution becomes unsaturated.
Learn more about unsaturated solutions here:
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Do you think a circuit breaker is wired in series or parallel? Why?
Answer:
I think it's in a series
Explanation:
is this an aviation class
True or False: Modulated waves can be analog or digital.
Answer:
True
Explanation:
Modulation waves(schemes) can be analog or digital. An analog modulation scheme has an input wave that varies continuously like a sine wave.