Answer:
Environmental groups oppose tidal energy because of the following potential negative consequences:
By changing the flow of tides with dams, there can be negative impact on the aquatic shoreline of the ecosystem;building of barrages may affect the sedimentation and turbidity of water within water basinsthere are animals what depend on the flow of tides for existence feeding and movement. The techology which captures the energy produced by the ties and converts them to electricity may affect the natural flow fo the tides thus impactin negatively on the aquatic and non-aquatic habitat.Cheers!
Complete this sentence. If mass remains the same while the volume of a substance ________, the density of the substance will_______________. decreases, decrease increases, decrease increases, stay the same decreases, stay the same
Answer:
increases, decrease
Explanation:
The density of a body is the measure of mass concentration of a material. It is an intrinsic property which is constant. It is the ratio of mass and volume
m = Mass
v = Volume
Density
[tex]\rho=\frac{m}{v}[/tex]
This means that density is inversely proportional to volume.
So, if volume increases density will decrease.
Why is it nessesary to have an independent variable that is changed by the experimenter during an experiment
Will give BRAINLIEST!
A limestone plateau has no surface water. All the water is pulled underground through cracks and crevices in the surface. What most likely will cause the underground of the plateau to change over time?
Physical weathering due to frost wedging
Physical weathering due to abrasion
Chemical weathering due to oxygen
Chemical weathering due to water
A limestone plateau has no surface water. All the water is pulled underground through cracks and crevices in the surface. What most likely will cause the underground of the plateau to change over time?
Physical weathering due to frost wedging
Physical weathering due to abrasion
Chemical weathering due to oxygen
Chemical weathering due to water Correct Answer
Answer: Chemical weathering due to water. fyi i did the test.
6. Velocity is a ____________. a) vector b) value c) arrow d) none of these
the theory that all matter consists of constantly moving particles is known as the
a. physical theory of matter
b. attraction theory of matter
c. theory of states of matter
d. kinetic theory of matter
Inertia increases as an object's _________ increases. mass volume acceleration velocity
Most earthquakes occur in areas close to where tectonic plates meet. There are earthquakes in San Francisco. What can be concluded from this information?
A) San Francisco is far away from an area where tectonic plates meet.
B) San Francisco is close to an area where tectonic plates meet.
C) San Francisco is close to Luzon, an island in the Philippines.
D) San Francisco is likely to experience a volcanic eruption in the near future.
Answer:
B) San Francisco is close to an area where tectonic plates meet.
Explanation:
According to the question most earthquakes occur in areas close to where tectonic plates meet. The best option that can be concluded from the earthquakes occurring in Francisco is that San Francisco is close to an area where tectonic plates meet. The close proximity of San Francisco to where tectonic plates meets will likely cause earthquake in that region.
Generally, the earth is divided into different plates. These tectonic plates might be oceanic crust or continental crust. The plates are constantly moving. The plates might be moving away from each other(divergence) , colliding with each other(convergence) or moving past each other (transform).
The area where these plates meets are usually area of potential earthquakes. This boundary are area of minor or major earth quake. Usually , aesthenospheric material are introduce to the surface through this boundary.
Choose one of the six fitness related components that are used in gymnastics.
Agility
Speed
Reaction Time
Balance
Coordination
Power
a croquet ball, after being hit by a mallet,slows down and stops. do the velocity and acceleration of the ball have the same signs
In the past, the intensity of the Earth's magnetic field was _____. A. greater B. weaker C. same D. evidence is inconclusive?
I'm sure A is the right answer
how is a pure substance different from a mixture? A. mixtures can be separated by physical means B. Pure substances are made up of mixtures C. A pure substance is heterogeneous D. A mixture is made of one substance
Mixtures can be separated by physical means is the statement that describes how a pure substance different from a mixture.
A pure substance is a form of matter that has a definite (constant) composition and distinctive properties.
On the other hand, a mixture is a combination of two or more substances in which they retain their properties.
Any mixture can be formed and then separated by physical means into its pure components without changing the identity of those components.
That is, there are different methods to separate a mixture into its different components, these methods are physical since they do not alter the properties of the components.
These physical methods are: Filtration, decantation, distillation among others, and are based on the physical state, characteristics and properties of the components of the mixture, to use the most appropriate technique.
Therefore, we can conclude that mixtures can be separated by physical means is the statement that describes how a pure substance different from a mixture.
Learn more here: https://brainly.com/question/772980
If I spacecraft seems to be Motionless in deep space is given some type of quick push what will happen
Answer:
Will remain in motion until an external force is applied.
Explanation:
According to Newton's first law of motion, a body continues to be in state of rest or motion, until and unless an unbalanced, external force acts on it.
In deep space, there is no external force. If a motionless spacecraft uses thrusters to give a push, the spacecraft will continue to be in motion until an unbalance external force acts on it again to stop it or increase its speed or change direction.
Select answer about motion and newtons law and explain why it's correct 23POINTS NEED ASAP
The train would need the greatest amount of force due to weight! If you think of it, a baseball won't need much force to stop it, but if you have a heavy train, it will need excessive force to stop the train. The answer would be #3
I hope this answer helps!
Sorry if it doesn't make sense, as I don't know that much about physics! I am just thinking of what makes sense.
True or false is the transformation of chemical energy to radiant and thermal energy when a flashlight is turned on is an example of inefficiency
The mass of a substance was found to be 8.2 g. By using the water displacement method the volume was found to be 3.6 cm3. Calculate the density
Answer:
D= 2.3g/ml
Explanation:
How would you measure the volume of a sponge
a hollow tennis ball and a lead filled tennis ball are dropped off a tall building. which reaches the ground first, the hollow ball, or the lead filled ball
a high school student ran the 100 meter dash in 12.20 seconds. find the velocity in meters per second and kilometers per hour.
which of the following is not a process that forms metallic ore
I believe that this question has the following choices to choose from:
placer deposits
fossil compaction
hydrothermal solutions
igneous processes
Actually among all, I have never encountered an ore that formed due to fossil compaction. I suppose we can get minerals such as marble or lime but not ores. So the answer is:
fossil compaction (answer)
Your best answer is B
what are ten derived quantities
Which is larger than a single atom?
a. magnetic domain
b. electron
c. neutron cloud
d. proton
Answer:
c
Explanation:
Does A= 6.4 B=12 C=12.2 Form a RIGHT TRIANLGE?
If the labor force of 155 million people is growing by 1.2 percent per year, how many new jobs have to be created each month to keep unemployment from increasing?
Answer:0.155 million jobs have to be created each month to keep unemployment from increasing.
Explanation:
Population of the labor force = 155 million
Percentage increase of labor force in an year = 1.2 % of 155 million
Percentage increase in labor force in a month = [tex]\frac{1.2 \%}{12}=0.1 \%[/tex] of 155 million
Jobs required to be created each month = population increase each month
[tex]=155 million\times \frac{0.1}{100}=0.155 million[/tex]
0.155 million jobs have to be created each month to keep unemployment from increasing.
Final answer:
To maintain the current unemployment rate with a labor force of 155 million growing at 1.2% annually, 155,000 new jobs need to be created each month.
Explanation:
To determine how many new jobs have to be created each month to keep unemployment from increasing, given a labor force of 155 million people growing at 1.2 percent per year, first, calculate the annual growth of the labor force. Multiply the current labor force by the growth rate:
155 million * 0.012 = 1.86 million new entrants into the labor force per year.
To find the monthly job creation requirement, divide this annual number by 12:
1.86 million / 12 = 155,000 jobs per month.
Therefore, 155,000 new jobs need to be created each month to keep unemployment from increasing as the labor force grows.
The smallest part of an element that can still be identified as that element is a(n) _____.
Someone help I’m dumb
Answer:
Meet and show
Explanation:
Mass= 386g volume= 20cm3 what is the density=
why is the mass of an atom’s electrons not included in the atom’s mass number
The main offenders in terms of greenhouse gas emissions
4. A person can swim 0.65 m/s in still water. She heads directly south across a river 130 m wide and lands at a point 88 m [W] downstream. K/U T/I A (a) Determine the velocity of the water relative to the ground. (b) Determine the swimmer’s velocity relative to Earth. (c) Determine the direction she should swim to land at a point directly south of the starting point.
Answer:
speed of the person in still water = 0.65 m/s
width of the river = 130 m
distance covered downstream = 88 m
a) let the speed of the water be = s
The time to cover two displacements would be equal.
[tex] \frac{130m}{0.65m/s}=\frac{88m}{s}\\ \Rightarrow s = 0.44 m/s[/tex]
b) Swimmer's velocity relative to earth would be:
[tex] v = \sqrt{0.65^2+0.44^2} = 0.78 m/s[/tex]
c) The swimmer should swim south of East to land at a point directly south of the starting point.
How can the rate of a reaction be increased?
lowering the temperature
decreasing the amount of reactants
having more surface area
diluting a solution
Answer:
C. Having more surface area
When the reaction involves solids, an increased surface area of it will result in an increased reaction rate. The higher the temperature, the faster the reaction rate will be too. Lowering the temperature, decreasing the amount of reactions, and diluting a solution will decrease the reaction rate
Answer:
having more surface area
Explanation: