Aswser: They can be transverse or longitudinal. However, all waves have common properties—amplitude, wavelength, frequency, and speed. Amplitude describes how far the medium in a wave moves. Wavelength describes a wave's length, and frequency describes how often it occurs.
A body of mass 11 kg is subjected to a net force of 20 N East for 30 s. Calculate the change in
velocity of the body.
Answer:
54.55 m/s
Explanation:
From the question above,
Change in velocity = impulse/mass
Δv = I/m = Ft/m................... Equation 1
Where F = force, t = time, m = mass
Given: F = 20 N, t = 30 s, m = 11 kg
Substitute these values into equation 1
Δv = (20×30)/11
Δv = 600/11
Δv = 54.55 m/s
Hence the change in velocity of the body is 54.55 m/s
The change in velocity of the body is 54.54 m/s
The velocity of the body of an object is the change of the distance of the object with time.
From the information given:
the mass of the b0dy = 11 kg
the net force F = 20 N
the time (t) = 20 s
Similarly;
Force = ma
20 = 11 × (a)
[tex]\mathbf{a = \dfrac{20}{11} \ m/s^2}[/tex]
a = 1.818 m/s²
However, the acceleration of an object is the change in velocity with time.
[tex]\mathbf{a = \dfrac{\Delta V}{t}}[/tex]
ΔV = (a) × (t)
ΔV = 1.818 m/s² × 30 s
ΔV = 54.54 m/s
Learn more about the velocity of an object here:
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Cancer can be treated with:
a) Radio waves
b) Infrared waves
c) Gamma wavesph
Answer: C. gamma waves.
Explanation:
:)
How do first impressions help us form schemas?
Answer:
i dont know im so sorry for making you feel like you
Explanation:
i dont know im so sorry for making you feel like you
Convert 365 years to days. Using one step conversion. :) Please help w this
Answer:
133225
Explanation:
(Don't answer that there is no image, its a simple question)
If you have 2 of the 3 measurements of an object can you find the 3rd?
Explain:
Answer:
yes
Explanation:
of course indeed correct
If the greenhouse effect is natural, then why is today's climate change a bad thing?
A.)A small increase in greenhouse gas concentration can have a large effect of increased warming.
B.)Humans have altered a natural process and exaggerated changes that might normally occur over millions of years.
C.)Once released into the atmosphere, greenhouse gases remain potent for many years, making it difficult to reverse the process.
D.)Abrupt changes to the climate system may have unintended outcomes that may pose challenges for societies, like more extreme weather, spread of diseases, a decline in marine life, or an alteration of ocean circulation patterns.
E.)All of these
Answer:
B.)Humans have altered a natural process and exaggerated changes that might normally occur over millions of years.
Explanation:
While the greenhouse effect is natural and in fact, helps maintain a climate suitable for life as we know it, humans have altered a natural process. A small change in the amount of greenhouse gases in the atmosphere has a large and long-lasting effect. Furthermore, humans have changed the composition of the atmosphere over a short time span, and the resulting warming us many times faster than natural changes. We are already seeing consequences like heat waves, melting sea ice, rising sea level, increased wildfires, and increases in extreme weather.
7) Lines of force are called?
Answer:
I'm pretty sure it's Electric Field Lines
In ΔWXY, y = 99 cm, x = 93 cm and ∠X=45°. Find all possible values of ∠Y, to the nearest degree.
The answer is 49 and 131
which of the following is an example of noncontact force?
A. Pitcher throws the ball
B. the bat hits the ball
C. the ball falls from the sky
D. the runner gets tagged out
Mr. Rossi's car, stopped at the traffic lights, is hit by that of Mr. Bianchi. Then later in court, claims that he was traveling at 50 km / h, but Mr. Rossi
tthinks that mr. Bianchi was going much faster. After the collision the two cars got stuck and from the tracks on the asphalt it was possible to establish that, immediately after the collision, they were traveling at 30 km / h. Mr. Bianchi drove a car with a mass of 800 kg and Rossi a car with a mass of 1400 kg.
Does Bianchi tell the truth?
show explanation
Answer:
i need this too
Explanation:
PLEASE HELP ASAP!!!
You and your 3 friends are driving down the road. All the wheels go flat at the exact
same time, that's not good. You have to use a 2,100 N force to push the car 4 meters to the side of the road. How much work did you do on the car?
A. 525 J
B. 2,104 J
С. 8,400 J
D. zero work since the car broke down
Answer:
D. Zero
Explanation:
A machine can only do work if it is operational
Two metal balls are dropped from the top of a two-story building at the same time. One ball is twice as heavy as the other ball. Which statements about their motion are true? Assume that air resistance isn’t a factor.
Answer:
that will be tureHéroes y bandidos: iconos populares y figuraciones de la nación ... más o menos convencional de un Superman o, mejor, un Batman: un ... —o, a veces, mediante su imposibilidad— se obliga al lector a ... creerse que un hombre de aspecto tan común fuera el poderoso ... vas a sentir la furia de un león.
summary about down hill on a bicycle story
Answer:
The poem, Going Down the Hill on a Bicycle, written by Henry Charles Beeching describes the thrilling ride of a boy going downhill. ... The poet mentions how he lifts his feet from the pedals and keeps his hands still so that he would not lose his balance and fall off the bicycle, while it is dashing down the hill.
Convert 140.8 centimeters to inches.
Using one step conversions.
Answer:
140.8/2.54=55.43 inches
I need help with this plz
I'm the youngest rapper in brooklyn, yeah yeah
there is a metal ball and ring set that is specially made so that at room temperature at the ball fits through the ring However when the ball is heated it gets stuck and cannot fit through anymore .why
Answer: Most objects expand when they take in heat for example get a metal sphere and put it next to a blow torch it would expand just enough to not fit in the ring anymore, but when it cools down it will go back to its original size releasing the energy
Explanation:
Identify the step of meiosis
Answer:
Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.
Two 8.0 Ω lightbulbs are connected in a 12 V parallel circuit. What is the power of both glowing bulbs?
Answer:
96w
Explanation:
p=Iv..where v=12 and I=8.0
Question 17 of 25
Which term describes the transfer of energy from a hot object to a cooler
one?
A. Pressure
B. Density
C. Temperature
D. Heat
Answer:
D
Explanation:
heat is an energy that transfers from a hot body to cold body
D. Heat
What is heat?Heat is the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.
Such energy transfer can occur in three ways: radiation, conduction, and convection.
As heat is a form of energy, and therefore the SI unit of heat is also joules (J) which are defined as the amount of energy needed to raise the temperature of a given mass by one degree.
Heat is the transfer of energy from a warmer object to a cooler object.
For example, a lighted match (higher temperature object) will transfer heat to a large pan filled with lukewarm water (lower temperature object).
Therefore,
The term describes the transfer of energy from a hot object to a cooler one is Heat.
Learn more about heat here:https://brainly.com/question/13860901
#SPJ2
Newtons 1st law
What is the resistance to this unbalanced force in football?
Answer:
Newton's first law of motion states that an object's motion will not change unless an unbalanced force acts on the object. ... The football player in the photo above is in motion. He will stay in motion unless players on the other team exert an unbalanced force against him.
Explanation:
https://flexbooks.ck12.org/cbook/ck-12-middle-school-physical-science-flexbook-2.0/section/1.4/related/rwa/football-physics/
LINK
Describe how a radiation is similar to b- radiation
Complete question is;
Describe how α-radiation is similar to β-radiation?
Answer:
Explained below
Explanation:
The similarity between both alpha radiation and beta radiation is that in both cases, they both show deflection when they go through electric and magnetic fields. Although alpha deflects towards the negative plate while bets deflects towards the positive plate.
Secondly they both have high speeds. Just that alpha is from the helium nucleus while beta is from electrons.
Tides occur in Ocean but not in Lake give reason
Answer:
Lakes don't cover enough area so that their water can't be moved significantly by gravity
1. A car travels along a straight road to the east for 100 meters in 4 seconds, then go the west for 50 meters in 1 second.
find the
a. Distance
b. Displacement
c. Time elapsed
Answer:
a.Distance = 150 m
b. Displacement = 50 m
Time lapsed = 5 seconds
Explanation:
a. Distance is the change in the position of an object.
The distance covered by the car = 100 + 50
= 150 m
b. Since displacement is a vector quantity,
Displacement of the car = 100 - 50
= 50 m due east
c. Time elapsed is the time taken for the motion of the car starting from when its starts to when it stops.
Thus, the time elapsed = 4 + 1
= 5 seconds
A basketball is thrown for a free throw at 10m/s an angle of 20 degrees, makes it into the hoop and lands on the ground. Find the initial velocity in the y direction. ??????????
Answer:
2
Explanation:
because uWU
Answer:no answer
Explanation:
Cause ur weird
3. A school bus traveling at 22 m/s has a momentum of 150,000 kgm/s. What is the mass of the
bus? *
Answer:
Mass of bus = 6,818.18 kg (Approx.)
Explanation:
Given:
Velocity = 22 m/s
Momentum = 150,000 kg-m/s
Find:
Mass of bus
Computation:
Mass = Momentum / Velocity
Mass of bus = 150,000 / 22
Mass of bus = 6,818.18 kg (Approx.)
An airplane traveled for 15 hours at a velocity of 1100 km/hr. What distance
did the airplane travel. *
Your answer
Answer:
i have no clue
Explanation:
What are the key features of stem cell therapy?
Answer:
The two defining characteristics of a stem cell are perpetual self-renewal and the ability to differentiate into a specialized adult cell type.
Answer:
Stem cells have the ability to differentiate into specific cell types. The two defining characteristics of a stem cell are perpetual self-renewal and the ability to differentiate into a specialized adult cell type.
And air rifle pellet of mass 2 g Is fired into a block of modelling clay mounted on a model railway track. The trunk and modelling clay have a mass of 0.1 kg the truck moves off after the pellet hits the modelling clay with an initial velocity of 0.8 m/s. State the momentum of the pallet just before it hits the modelling clay
Answer:
0.0816 kgm/s
Explanation:
From the question,
Momentum of the pellet just before it hits the modelling clay is = (mass of the pellet+ mass of the truck clay)×initial velocity of pellet.
P =(M+m)u...................... Equation 1
Where P = initial momentum of the pellet, m = mass of the pellet, u = initial speed of the pillet, M = mass of the truck
Given: m = 2 g = 2/1000 kg = 0.002 kg, u = 0.8 m/s, M = 0.1 kg
Substitute these values into equation 1
P = (0.002+0.1)0.8
P = (0.102)0.8
P = 0.0816 kgm/s
A car has 3600 J of kinetic energy and is going 3 m/sec. What is its mass?
Charles Darwin used fossils as evidence to develop his theory of natural selection. Which event would most likely lead to a change in this theory?
Answer:
Darwin used fossils as pieces of evidence in order to develop the theory of natural selection.
He observed that the fossils of simple organisms are found to be present in much older rocks, whereas fossils of more complex organisms are obtained from the geologically younger rocks. This observation of fossils made him understand how the evolutionary process takes place in due course of time. This evolution takes place due to the natural selection method, where an organism is adapted to a particularly suitable environment.
Thus, the discoveries of various fossils helped in developing the natural selection theory.