f= 2000hz
w.l. = .35m
speed = f × w.l.
700m/s
now dist. = 1500 m
time= d/sp.
1500/700
15/7s
2.142sec.
Construct arguments based on evidence about the applications, benefits, and problems of nuclear energy as an alternative energy source.
Answer:
Explanation:
Clean Energy Source It generates more than 800 billion kilowatt hours of electricity each year and produces more than half of the nation's emissions-free electricity. This avoids more than 470 million metric tons of carbon each year, which is the equivalent of removing 100 million cars off of the road.
If I'm wrong I'm sorry
If I'm right thank you and (brainliest plz)
Explain how a chain reaction is sustained.
Answer:
The chain reaction requires both the release of neutrons from fissile isotopes undergoing nuclear fission and the subsequent absorption of some of these neutrons in fissile isotopes. Thus, the cycle repeats to give a reaction that is self-sustaining.
Why is it very dangerous
for the driver and
passengers if any bubbles of gas get into
the brake fluid? Even worse what would go wrong if the break fluid leaked out of its pipes?
Answer:
If it leaks....
If there is a brake fluid leak and air gets mixed with the fluid in the brake lines, then the fluid will not be able to flow correctly. As a result, when you press your foot down on the brake pedal, it will feel squishy or spongy. In other words, the brake pedal will feel very soft.
If air bubbles get into....
Air is the enemy in a hydraulic system because it reduces pressure and essentially makes the process less effective. When air gets into the brake lines, your brake system suffers. Symptoms that can indicate you have air in your brake lines include the following: Brake pedal feels spongy when you press down
Hope it helps!!!!
2. David roller skates 15 miles in 75 minutes. What is his average speed in miles per hour?
1
Make a sketch of the radius of gyration of a polymer chain vs. the degree of polymerization N as it would appear on a log-log scale for: (a) a bad solvent, (b) a good solvent, and (c) a theta solvent. If the apparent log-log trend is linear, what is the significance of the slope?
Answer:
hhhhhhhhhhhhhhhhhhhhh
Explanation:
sjdnxjwodj1oeixjwkw9dijwqoisjd1
sjssusidej
What was Orsted’s historic discovery?
Answer:
The electric current in a wire can deflect a compass needle if its magnetized.
Explanation:
Can Someone Please Help Me For 10 Points.
John steps outside and observes that clouds have started to form in the sky, and it looks like it could rain. Which of the following is the best way to explain why the clouds have formed?
A. The temperature of the air is below zero.
B. There is a low amount of moisture in the air.
C. The warm, wet air in a low pressure system has risen up and cooled down.
D. The wind is traveling at a slow speed.
Answer: C
Explanation: The warm, wet air in a low pressure system has risen up and cooled down.
Please give Brainliest if you can!
Answer: C
Explanation: When John stepped outside, he saw the clouds because the warm, wet air in a low pressure system has risen up and cooled down. This is what will fall down as rain fall.
Based on information from the periodic table, what does this image represent?
Which devices, used together, can measure acceleration
Answer:
A stop watch
A speedometer
Explanation:
Acceleration is the rate of change of velocity of an object with respect to time.
The speedometer can indicate the different speeds, the starting and the final velocity. Then with the stop watch can be used to capture the change in time.
However, acceleration can be measured directly using an accelerometer.
Answer:
Meterstick, stopwatch, and compass
Explanation:
SCIENCE
What does the nucleus of the cell control?
A. Life functions
B. Cell transport
C. Waste excretion
D. Energy production
Answer:
I believe A would be the best answer
Explanation:
Cell transport means things entering and leaving the cell, this would be controlled by the cell membrane
Waste excretion is controlled by the vacuole
Energy production is the mitochondria (the mitochondria is the power house of the cell)
Life functions include cellular reproduction and the nucleus contains the genetic information to do this
Answer:
a
Explanation:
1. This drug is a narcotic, and is injected or smoked. It is also called "smack or horse". It also provides a burst or rush of good feelings, and users feel "high" and relaxed. Which drug is this?
Answer:
Heroin
Explanation:
it can be smoked or injected and causes feelings of "euphoria"
4. What is the period of the microwaves in the above question?
Answer:
The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 days for the Earth to complete a cycle.
1. A 1000 kg bag of sand has an
acceleration of 0.5m/s/s. What is the
force on the bag?
Answer:
We conclude that the force on the bag is 500 N.
Explanation:
Given
Mass m = 1000 kgAcceleration a = 0.5 m/s²To determine
Force F = ?
We know that when a force is applied to a body, it produces acceleration.
Important Tip:
We can determine the force on the bag using the formula F = maUsing the formula
[tex]F = ma[/tex]
where
[tex]F[/tex] is the force [tex]m[/tex] is the mass[tex]a[/tex] is the accelerationnow substitute m = 1000, and a = 0.5 m/s² in the formula
[tex]F = ma[/tex]
[tex]F = (1000)(0.5)[/tex]
[tex]F=500[/tex] N
Therefore, we conclude that the force on the bag is 500 N.
What is the critical angle for a ray trying to pass from glass (n = 1.52) into water (n = 1.33)? (Water n = 1.33, Air n = 1.00) (Unit = deg)
Answer:
59.52
Explanation:
59.5 in sigfigs
got it right on Acellus
Answer:
61.05
Explanation:
correct on acellus
Where does the pendulum have an equal amount of potential and kinetic energy?
Answer:
The potential energy of the pendulum is 0 when the pendulum is at its equilibrium position. Therefore, at this point, the mechanical energy E is equal to the kinetic energy KE (all the energy at the equilibrium position is kinetic).
Explanation:
how roofs are lifted off building in tornado?
Explanation:
As a tornado or other storm system passes over a building, low pressure can tug a roof upward. When those forces surpass the force exerted by the weight of the roof, the structure flies up and is swept away by wind currents..
a lorry has a mass of 32000 kilograms. each tyre has an area of 400 cm squared in contact with the ground. calculate the pressure exerted on the ground if the lorry has 6 tyres
Answer:
Your answer is 1306666.6667 Pascal
Which is a device that stores electric charge by separating positive and negative charges?
O a conductor
O a dielectric
O a resistor
O a capacitor
Answer:
The last one, a capacitor
Explanation:
Right on edge.
1.Energy is used when a force acts over a.....................
.................................................
2.All objects have the same weight have:
a)the same place on Earth
b)the same mass
c)the same volume
d)pull of gravity on them
Answer:
the same mass answer b) but i dont know first question
Which of the following is an example of the transformation of gravitational potential energy into motion energy (kinetic energy
A tire rolling along a level floor
A ball going up after being tossed into the air
gley
ve
A drop of water falling from a faucet into a sink
None of these because gravitational potential energy cannot be transformed into motion energy
Answer:
A drop of water falling from a faucet into a sink
Use the drop-down menus to complete the sentences. Tetra fish that live in caves are blind and have small eyes that do not work. This is an example of a . A harbour seal's flipper and a human hand have a very similar structure, but function differently. This is an example of a .
Answer:
vestigial structure
Homologous structure
Explanation:
Did the assignment.
Tetra fish that live in caves are blind and have small eyes that do not work. This is an example of a vestigial structure.
A harbour seal's flipper and a human hand have a very similar structure, but function differently. This is an example of a Homologous structure.
What is vestigial structure?
Some organisms have elements that seem to be left over from an earlier ancestor but have no apparent purpose. For instance, because they are evolved from reptiles with legs, certain snakes have pelvic bones despite not having any. The human vermiform appendix is another instance of a structure that serves no purpose.
Vestigial structures are these inactive, purposeless structures. Other examples of vestigial structures are the wings of flightless animals like the ostrich, the leaves of some cacti, the remains of whale pelvic bones, and the eyes that are blind in cave mammals.
Learn more about vestigial structure here:
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The distance between two particles is 2 centimeters. If the distance is increased to 4 centimeters, the force will be ?
Answer:
The new force is 1/4 of the previous force.
Explanation:
Given
[tex]Initial\ Distance = 2cm[/tex] ---- [tex]r_1[/tex]
[tex]New\ Distance = 4cm[/tex] --- [tex]r_2[/tex]
Required
Determine the new force
Let the two particles be q1 and q2.
The initial force F1 is:
[tex]F_1 = \frac{kq_1q_2}{r_1^2}[/tex] --- Coulomb's law
Substitute 2 for r1
[tex]F_1 = \frac{kq_1q_2}{2^2}[/tex]
[tex]F_1 = \frac{kq_1q_2}{4}[/tex]
The new force (F2) is
[tex]F_2 = \frac{kq_1q_2}{r_2^2}[/tex]
Substitute 4 for r2
[tex]F_2 = \frac{kq_1q_2}{4^2}[/tex]
[tex]F_2 = \frac{kq_1q_2}{4*4}[/tex]
[tex]F_2 = \frac{1}{4}*\frac{kq_1q_2}{4}[/tex]
Substitute [tex]F_1 = \frac{kq_1q_2}{4}[/tex]
[tex]F_2 = \frac{1}{4}*F_1[/tex]
[tex]F_2 = \frac{F_1}{4}[/tex]
The new force is 1/4 of the previous force.
3. A train covers 168 km in 4 hours. How much distance will it cover in 80
minutes?
Answer:
56km
Explanation:
168 ÷ 240 = 0.7
0.7 × 80 = 56km
240 is the amount of minutes in 4 hours.
We divided 168 by 240 to get the distance covered in 1 minute. Afterwards, we needed 80 minutes so we multiplied the answer by 80.
Which of the following statements would be accepted as a valid criticism of
the big bang theory in scientific circles?
A. It cannot be tested directly.
B. It does not explain how stars are clustered.
C. It can be revised at a later date.
0
D. It is just an educated guess.
Answer:b
Explanation:
The statement B would be accepted as a valid criticism of the Big Bang Theory in scientific circles, It does not explain how stars are clustered.
What is Big Bang Theory?The Big Bang hypothesis is the most widely accepted cosmological model for describing the origins of the observable universe and its subsequent large-scale development.
Statements would be accepted as a valid Big Bang Theory in scientific circles is that it does not explain how stars are clustered.
Hence, option B is correct.
To learn more about the Big Bang Theory, refer to the link;
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A large body of water with land all around it
Answer:
i think its a lake
Explanation:
Answer: What do you call a large body of water surrounded by land?
A lake is a large body of water surrounded by land on all sides.
Explanation:
For the element 35 17 C1, give the number of... 1. protons 2. neutrons 3. electrons
Answer:
Chlorine 35:
Atomic mass 35.43
Number of protons 17
Number of electrons: 17
Number of neutrons: 18
Explanation:
The s.I unit of R so that the equation velocity= R × density S dimensionally correct R is a constant
Answer:
R = m⁴/kg . s
Explanation:
In this case, the best way to solve this is working with the units in the expression.
The units of velocity (V) are m/s
The units of density (d) are kg/m³
And R is a constant
If the expression is:
V = R * d
Replacing the units and solving for R we have
m/s = kg/m³ * R
m * m³ / s = kg * R
R = m * m³ / kg . s
R = m⁴ / kg . sThis should be the units of R
Hope this helps
What if we minned astroids
Is standing near a lamp conduction,convection, or radiation?
Answer:
Radiation
Explanation:
It is radiation because it is heating up and going towards you.Which element on the periodic table fights dandruff, directs drivers, and makes copies of your homework?
Answer:
Talc is the known mineral