Answer:
1.
2.
3.500
4.
5. 2
Explanation:
will do rest later
The infrasound waves were at just the right ________________ to vibrate the human eye. no frikin links!!!
Answer:
pitch
Explanation:
the object having uniform velocity has zero acceleration why
Because that's what "uniform velocity" means.
Uniform velocity means constant speed in a straight line.
Acceleration means changing speed OR changing direction.
how does a mirror affect the path of light
Answer:
light bounces off the mirror
Explanation:
A car has a kinetic energy of 432,000 J when traveling at a speed of 23 m/s. What is its mass?
Answer:
2
Explanation:
2
HELP ME PLSSS What are the possible genotypes
of the F, offspring? What are the
possible phenotypes of the F,
offspring?
Answer:
the answer is b i think
Answer:Within an individual organism, the specific combination of alleles for a gene is known as the genotype of the organism, and (as mentioned above) the physical trait associated with that genotype is called the phenotype of the organism.
Explanation:
The phenotype is the trait those genes express. ... Looking at the possible offspring, each box (or possible offspring) has two copies of the dominant gene. This means there is a 100% chance of the offspring having brown eyes, or being BB. It's important to note here that each box represents a possible offspring.
A proton is moving in a circular orbit of radius 20 cm under a uniform magnetic field 0.3 t perpendicular to the velocity of the proton then the velocity of this pronto
Answer:
v = 5.75 x 10⁶ m/s
Explanation:
The radius (r) of the circular orbit taken by a charged particle is related to its speed perpendicular to a magnetic field of strength B, and is given by
r = [tex]\frac{mv}{qB}[/tex] --------------(i)
Where,
q = charge of the particle
m = mass of the particle
Making v subject of the formula in equation (i) above gives
v = [tex]\frac{qBr}{m}[/tex] -------------------(ii)
Given;
r = 20cm = 0.2m
B = 0.3T
v = unknown
q = charge of proton = 1.6 x 10⁻¹⁹ C
m = mass of the proton = 1.67 x 10⁻²⁷kg
Substitute the values of m, q, B and r into equation (ii) above to get;
v = [tex]\frac{1.6 * 10^{-19} * 0.3 * 0.2} {1.67*10^{-27} }[/tex]
Solving for v gives:
v = 5.75 x 10⁶ m/s
Therefore, the velocity of the proton is 5.75 x 10⁶ m/s
Question 2 please help
Answer:
D
Explanation:
Radiation present in the environment but not produced by humans is called ______.
Answer:
background
Explanation:
sound and waves plz help
Answer:
A. f = 8 Hz
B. T = 0.125 s
C. λ = 0.0166 m = 16.6 mm
D. d = 7.98 m
Explanation:
A.
The frequency of the wave can be given as:
[tex]f = \frac{n.\ of\ waves}{time}\\\\f = \frac{360}{45\ s}\\[/tex]
f = 8 Hz
B.
The time period will be:
[tex]T = \frac{1}{f}\\\\T = \frac{1}{8\ Hz}\\[/tex]
T = 0.125 s
C.
The wavelength is given as:
[tex]\lambda = \frac{c}{f}\\\\\lambda = \frac{0.133\ m/s}{8\ Hz}[/tex]
λ = 0.0166 m = 16.6 mm
D.
The distance traveled in 1 minute can be found out as follows:
[tex]c = \frac{d}{t}\\\\d = c\ t\\d = (0.133\ m/s)(60\ s)[/tex]
d = 7.98 m
1. An elevator is moving up at a constant velocity of 2.5 m/s, as illustrated in the
diagram below: The passenger has a mass of 85 kg,
a. Construct a force diagram for the passenger
What difficulties would arise due to lack of uniformity in measurement in different
countries? Write in brief.
Answer:
Many difficulties would arise if there was a lack of uniformity in the measurement of various weights and measures between business, industry, individuals and countries.
The biggest implications for a lack of uniformity are in health and safety, equity and sustainability.
Explanation:
https://alessandrorossini.org/we-can-put-an-end-to-imperial-units/
PLEASE HELP ME I AM TIMED!
Answer:
I would say the 3rd one
Explanation:
Why is your weight the same any place on Earth?
Answer: A person can weigh differently at various place on Earth because of the fluctuations in Earth's gravity, according to a new high-resolution map. ... Earth's gravity is weaker at the equator due to centrifugal forces produced by the planet's rotation
Explanation:
The velocity of a particle is described by an equation v=ct +dt-2 where c=0.1m/s and d=0.02m/s Calculate
Answer:
See solution below
Explanation:
Complete question
The velocity of a particle is described by an equation v= ct + dt²
where c = 0.1 m/s and d = 0.02 m/s. Calculate:
(i) the change in velocity during the time interval t = 3 seconds and
t = 6 seconds.
(ii) the average acceleration in that same time interval
Substitute the value of c and d into the equation to have
v= ct + dt²
v = 0.1t+0.02t²
The velocity at the = 3secs will be expressed as:
V(3) = 0.1(3)+0.03(3)²
v(3) = 0.3+0.27
V(3) = 0.57m/s
When t =6secs
V(6) = 0.1(6)+0.03(6)²
v(6) = 0.6+1.08
V(6) = 1.68m/s
Change in velocity = v(6)-v(3)
Change in velocity = 1.68-0.57
Change in velocity= 1.11m/s
B) Acceleration is the rate of change in velocity
A(t) = dv/dt
A(t) = c+2dt
A(t) = 0.1+2(0.02)t
A(t) = 0.1+0.04t
If t = 3
A(3) = 0.1+0.04(3)
A(3)= 0.1+0.12
A(3) = 0.22m/s²
A(6) = 0.1+0.04(6)
A(6)= 0.1+0.24
A(6) = 0.34m/s²
Average acceleration = 0.34-0.22
Average acceleration = 0.12m/s²
A high diver steps off a diving platform that is 10 meters above the water if no air resistance is present during the fall there will be a decrease in the divers what?
Answer:
Potential energy.
Explanation:
Potential energy can be defined as an energy possessed by an object or body due to its position.
Mathematically, potential energy is given by the formula;
[tex] P.E = mgh[/tex]
Where,
P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
In this scenario, a high diver steps off a diving platform that is 10 meters above the water, if no air resistance is present during the fall there will be a decrease in the driver's potential energy. This is simply because the potential energy of all physical objects is greatly or highly dependent on acceleration due to gravity.
Label the parts of the wave.
Answer:
A: Wavelength
B: Crest
C: Trough
D: Amplitude
Answer:
A:
✔ crest
B:
✔ amplitude
C:
✔ trough
D:
✔ wavelength
Explanation:
HELP!!! 50 POINTS
4. Predicting What would have happened, in terms of thermal energy transfer, if the water temperature had originally been10.0°C? Explain your reasoning.
Context:Background InformationThe quantity of energy transferred by heat from a body depends on anumber of physical properties of the body and its surroundings. For a given substance, the rate at which thermal energy is transferred by conduction depends on temperature difference, cross-sectional area,and a thermal conductivity constant that is unique to the substance.By choosing one of these properties as a manipulated variable and making the other properties controlled variables, the effect of the manipulated variable on thermal conduction can be determined experimentally.In this investigation, you will study the rates of cooling of three containers of water of equal volume but different surface area.
Answer:
do u have a picture of the question?
Explanation:
it would be easier to solve
If a balloon is charged with static electricity and you rip small pieces of tissue paper. Will it stick to the balloon?
Answer:
Yes
Explanation:
Rubbing a balloon with wool cloth will create static electricity charges. If you place small pieces of tissue paper near the balloon in Picture 2, they would probably stick to the balloon.
A DC generator is the same as a(n)
A. electric motor.
B. AC generator.
C. armature.
D. electric current.
Answer:
A DC generator is the same as a(n)
C. armature
Calculate the distance of the end of a valley bearing in mind that the echo takes 0.7 seconds to be heard from the moment when the sound was produced.a
Answer:238m
Explanation:Distance = speed x time
Speed = 340 m/s
340 m/s x .07 s = 238m
physical sciences Practical test
so ummmm what about ?
because I cant see any actual question?
5. How is the person in the photos separating the
charges in her hair and the balloon?
Explanation:
when a Rubber Balloon is rubbed against human hair, electrons are transferred from the hair to the rubber, giving the balloon a net negative charge and leaving the hair with a net positive charge .As the balloon is pulled away,the opposite charge on the hair causes it to be attracted the balloon
PLEASE HELP!! WILL MARK THE BRAINLIEST! HIGH SCHOOL PHYSICAL SCIENCE
Using what you know about the periodic table, list some patterns that organize the elements in terms of atomic number, atomic mass and valence electrons? What do the periods (horizontal rows) and groups (vertical columns) of the periodic table indicate to us about the elements that are categorized within them?
Answer:
Periods indicate that a new period at a new principal energy level which is filled with electrons. Groups indicate that the elements share similar properties because their shells are filled with the same number of valence electons.
Explanation:
e see that starting at period 2 Li has a +1 charge , He has +2 charge, B has +3 charge, C has the potential to have a +4 charge or -4 charge (because it can gain or loose electrons) and N has a -3 charge, etc. Groups however, have similar properties and every element in a 1A - 8A has the same number of valence electrons. All except the noble gases in which He only needs 2 electrons to be in a perfect state. This is its octet as it would be a completely different element if it had more than 2 electrons in its shell. An example of the groups sharing similar properties is if we were to look at group 1A. In group 1A we find H, Na, K, etc. These are all highly unstable elements when alone (not in a compound) and they are very reactive. If you were to put Na for instance in water, it would light up and you'd see a flame sitting on top of the water. A scientist could do that with the rest of the elements in the group and they would see this increasing in reactivity as you go down the periods. Francium isn't visible long enough to be able to see this happen though. It's more of that kind of element that scientists prove that it exists, but not a very common element to get to learn much about.
what type of wave travels through matter only??
A mechanical wave can only travel through matter.
The second paragraph of the article discusses how scientists monitored a crack in a rock face on a cliff. How did their findings help them assess the risk of falling rock?
Answer:
The scientists discovered that the crack expanded and contracted about 1 centimeter each day based on daily changes in temperature. They also discovered that the overall gap in the rock widened over the span of several summers and weakened the rock. The instability of this weakened rock might increase the risk of rock falls.
Explanation:
Same exact answer you might just want to change it up a little bit or copy and paste your welcome ! :) <3
RE-WRITTEN ANSWER: They recorded and looked at the amount the gap in the rocks expanded and reverted each day by 1 centimeter based on the differences in temperatures. The gap in the rock expanded greatly over the course of multiple summers and damaged the rock.
EXACT PLATO ANSWER: The scientists discovered that the crack expanded and contracted about 1 centimeter each day based on daily changes in temperature. They also discovered that the overall gap in the rock widened over the span of several summers and weakened the rock. The instability of this weakened rock might increase the risk of rock falls.
Could Mars be a suitable alternative to Earth as a second home for humans? Explain your answer.
Answer:
yes
Explanation:
After the Earth, Mars is the most habitable planet in our solar system due to several reasons: Its soil contains water to extract. It isn't too cold or too hot. ... Gravity on Mars is 38% that of our Earth's, which is believed by many to be sufficient for the human body to adapt to.
Why should a physical quantity be measured?
Answer:
It allows us to understand nature much more deeply than does qualitative description alone.
Explanation:
Without explaining the measurements, a quantity cannot always be measured.
Hope this helped, and please mark as Brainliest :)
A wave oscillates with a period of 4.25 X 10-10 s. How many waves will strike a signal detector in 3 seconds?
Answer:
[tex]n=7.05\times 10^9[/tex] waves
Explanation:
Given that,
A wave oscillates with a period of [tex]4.25\times 10^{-10}\ s[/tex]
We need to find the number of waves that will strike a signal detector in 3 seconds.
We know that,
Frequency = (no. of oscillations)/time
Time period = time/(no. of oscillations)
Let there are n waves that will strike
So,
[tex]n=\dfrac{3}{4.25\times 10^{-10}}\\\\=7.05\times 10^9[/tex]
Hence, [tex]7.05\times 10^9[/tex] waves will strike in 3 seconds.
This graph indicates that the acceleration between 2.00 and 4.00 seconds is the same as that between 12.00 and 14.00 seconds.
True
False
In the nucleus ______________
tell cells what to do and how to change.
Answer:
i believe it is dna
Explanation:
if i remember correctly if the dna tells the cell what to do and how to do it