Answer:
B. Convection
Explanation:
Convection is the process in which heat is transferred from one point to another by the actual movement of the material particles from a region of high temperature to a region of low temperature.
a 4 kg vase sits on a shelf at a height of 1.2m .how much gravitational potential energy is added to the vase when it is lifted to a shelf of height 1.4m .
Answer:
54.88 J
Explanation:
PE = mgh
PE = (4)(9.8)(1.4)
= 54.88 J
Which is the strongest of the four fundamental forces? strong nuclear, weak nuclear, electromagnetic, gravitational
Answer:
Hands down, the strong nuclear force.
Answer:
strong nuclear force, hope it helps!
Explanation:
Actually, gravity is the weakest of the four fundamental forces. Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity.
source: https://wtamu.edu/~cbaird/sq/2013/05/22/why-is-gravity-the-strongest-force/
A car is moving eastward and speeding up. The momentum of the car is ______.
a. increasing
b. decreasing
c. remaining constant
The base for hair follicles is in the _____.
epidermis
fatty layer
dermis
dentin
Answer:
dermis
Explanation:
epidermis
dermis
hypodermis
Some giant ocean waves have a wavelength of 25 m and a frequency of
0.26 Hz. What is the wavespeed of such a wave? *
Answer:
Explanation:
The frequency equation for waves is
[tex]f=\frac{v}{\lambda}[/tex] where f is the frequency, v is the velocity, and lambda is the wavelength. Filling in:
[tex].26=\frac{v}{25}[/tex] so
v = .26(25) and
v = 6.5 meters/second
Who was responsible for arriving at the
conclusion that measured amounts of
electrical and mechanical energy can be
converted to proportionate amounts of heat
energy?
Answer:
James Prescott Joule
James Prescott Joule, (born December 24, 1818, Salford, Lancashire [now in Greater Manchester], England—died October 11, 1889, Sale, Cheshire), English physicist who established that the various forms of energy—mechanical, electrical, and heat—are basically the same and can be changed one into another.James Prescott Joule experimented with engines, electricity and heat throughout his life. Joule's findings resulted in his development of the mechanical theory of heat and Joule's law, which quantitatively describes the rate at which heat energy is produced from electric energy by the resistance in a circuit.
weathering can be either chemical or physical process that action of water causes physical weathering rocks which examples
Frost wedging is a type of physical weathering of rock.
Explanation:
Physical or mechanical weathering affects the rock structurally but does not change the chemical composition. Mechanical forces will rub, break or shatter the rock surfaces. Wedging, abrasion, exfoliation are different types of physical weathering.
Water is one of the main sources which alter the structure of the rocks physically.
Frost wedging occurring due to flow of freezing water over the rocks. This frozen water enters the rock through the cracks and crevices on the rock surface, and will expand inside and makes the rocks to crack further and breaks it apart.
Please mark brainliest
Which option best describes the increase in pressure when the volume of a plastic bottle decreases?
by a factor of 10
uneven
uniform
not at all
Answer:
B) uniform
Explanation:
We can solve this problem by using Boyle's law, which states that:
For a constant mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume.
Mathematically:
where
p is the pressure of the gas
V is its volume
If we apply the equation to the bottle in the problem, we see that:
- when the volume of the bottle (and therefore, of the gas inside) decreases, than the pressure will increase
- viceversa, when the volume of the bottle increases, the pressure will decrease
The amount by which the pressure increases is inversely proportional to the decrease in volume, so the answer depends on how the volume of the bottle decreases: however, if the volume of the bottle decreases uniformly, then we can say that the pressure inside the bottle will also increases uniformly.
MARK THIS ANSWER AS THE BRAINLIEST PLEASE ❤️
An increase in pressure of a plastic bottle uniformly decreases by a factor of ten when the volume decreases.
What is pressure?Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.
There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .
It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.Pressure and volume of gas are inversely proportional.
Learn more about pressure,here:
https://brainly.com/question/14760196
#SPJ6
A man holds a rectangular card in front of and parallel to a plane mirror. In order for him to see the entire image of the card, what is the least mirror area needed ?
Answer:
mark as the brainly olss
the unit of area is derived unit why
NO LINKS AND PLEASE ANSWER ASAP!!
of Newton's three laws of motion specifically applies in each of the
following situations:
a. Newtonj 3d Low You feel a force against the sole of your foot as you
take a step forward.
b.
A meteor moving in a straight path changes direction
when it flies by Earth.
C.
A full grocery cart that is pushed starts moving and
increases speed, but the same push increases its speed even more when the
cart is empty.
d.
A skateboard moves faster in the same direction it is
pushed.
Answer:
Its b because the meteor moving strait.
Explanation:
What are action and reaction forces, and how do they impact an object's motion?
Action-reaction forces are equal and opposite forces that act on different objects, so they don't cancel out. In fact, they often result in motion. Think about Jerod again. He applies force with his foot to the ground, whereas the ground applies force to Jerod and the skateboard, causing them to move forward.
Hope this helps =)
Question:
A race car slows with an average acceleration of –8.0 m/s2 (negative sign shows deceleration). The car’s initial velocity is 100.0 m/s, how far does it travel in 12.0 seconds? Explain how you arrived at your answer?
Use the equations
Answer:
[tex]624\:\mathrm{m}[/tex]
Explanation:
We can use kinematics equation [tex]\Delta x =v_it+\frac{1}{2}at^2[/tex].
What we're given:
[tex]v_i[/tex] of 100.0 m/s[tex]t[/tex] of 12 s[tex]a[/tex] of -8.0 [tex]\mathrm{m/s^2}[/tex]Solving for [tex]\Delta x[/tex]:
[tex]\Delta x=100\cdot 12+\frac{1}{2}\cdot -8\cdot 12^2=\boxed{624\:\mathrm{m}}[/tex]
what we have to do ? please someone help
6.There are four mixtures A, B, C and D. The mixture A contains sand and sugar, mixture B contain chalk powder and salt, mixture C contains salt and sugar, whereas mixture D contains sugar and charcoal powder. Which one of these mixtures cannot be separated by using water as a solvent? Why?
Answer:
Mixture C (salt and sugar)
Explanation:
Both salt and sugar can dissolve in water. And you can't just separate the mixture by filtering it like you could in the other mixtures.
A 1,650 kg SUV comes uniformly to a stop. If the vehicle is accelerating at -1.3 m/s^2,
which force is closest to the net force acting on the vehicle?
A. -9,600 N
B. -2,106 N
C. -1,250 N
D. -84 N
Answer:b
Explanation:
Which of the following is a scientific question?
A. What is the best price for an LED screen design?
B. Which LED screen design produces the most attractive images?
C. Which LED screen design is the most energy efficient?
D. Does the LED screen design violate a previous patent?
Answer:
I think the answer would be c
Explanation:
A. is not scientific
B. is subjective, so it can't be scientific.
C. can be studied with an experiment
D. relates to regulations, not science
1) Complète les phrases suivantes en remplaçant
chaque numéro par le mot convenable:
• Pour l'oeil 1, l'image est formée en avant de la
rétine, car l'oeil est trop long.
• Pour l'oeil 2, l'image est formée derrière la
rétine, car l'oeil est plus court.
2) Trouve la place de la lentille convergente, ainsi
que les 2 foyers principaux (F) et (F').
Answer:
si?
Explanation:
definition La myopie. L'oeil myope est trop long ou le cristallin trop convergent. L'image d'un objet à l'infini se forme en avant de la rétine. Le punctum remotum est ... i dont know sorry
[OU.02H]The first coordinate of the celestial coordinate system is called
right ascension
declination
planisphere
celestial equator
Answer:
planisphere
Explanation:
Một sóng cơ học có tần số 50hz lan truyền dọc theo một sợi dây rất dài biết rằng sau 5 giây sóng truyền được 1 đoạn 25m dọc theo sợi dây. Bước sóng đó bằng
Answer:
10 cm
Explanation:
Được
Tần số = 50 hertz
Khoảng cách đã đi = 25 m
Thời gian đi quãng đường 25 m = 5 giây
Tốc độ của sóng = 25/5 = 5 mét trên giây
Như chúng ta biết
Bước sóng = Vận tốc / tần số
Bước sóng = 5 mét trên giây / 50 trên giây
Bước sóng = 0,1 m = 10 cm
how large a band of frequencies does each television broadcasting channel get ?
Answer:
Since the waves must carry a great deal of visual as well as audio information, each channel requires a larger range of frequencies than simple radio transmission. TV channels utilize frequencies in the range of 54 to 88 MHz and 174 to 222 MHz. (The entire FM radio band lies between channels 88 MHz and 174 MHz.)
Answer:
Since the waves must carry a great deal of visual as well as audio information, each channel requires a larger range of frequencies than simple radio transmission. TV channels utilize frequencies in the range of 54 to 88 MHz and 174 to 222 MHz. (The entire FM radio band lies between channels 88 MHz and 174 MHz.)
Explanation:
Ok
What is the mass of a ball rolling at 5.00m/s if it has 3.00J of kinetic energy?
Answer:
Explanation:
The equation for Kinetic Energy is
[tex]KE=\frac{1}{2}mv^2[/tex] and we know everything but the mass of this ball. Filling in:
[tex]3.00=\frac{1}{2}m(5.00)^2[/tex]. Get everything isolated from the :
[tex]m=\frac{2(3.00)}{(5.00)^2}[/tex] which tells us that we need 3 significant digits in our answer.
m = .240 kg since mass is always in kg i the velocity is in meters/sec
what is the full name of the units used for frequency?
Give three other examples for each state of matter.
d movement of particles for each state
solid
1.coin
2.iron bar
3.glass(no, it's does not flow)
liquid
1.water
2.wine
3.mercury(a liquid metal).
Gas
1.carbon dioxide
2.nitrogen
2.oxygen
I hope this answer helps me
6. A massive truck collides with a less massive car. The force experienced by the truck is ____________ (less than, equal to, greater than) the force experienced by the car. The resulting acceleration of the truck is ____________ (less than, equal to, greater than) the resulting acceleration of the car.
Please answer ASAP
A massive truck collides with a less massive car. The force experienced by the truck is equal to (less than, equal to, greater than) the force experienced by the car. The resulting acceleration of the truck is less than (less than, equal to, greater than) the resulting acceleration of the car.
An electric circuit consists of a variable resistor connected to a source of constant potential difference. If the resistance of the resistor is doubled, the current through the resistor is
Answer:
halved.
Explanation:
Given the following data;
Potential difference = constant
Resistance = 2 * resistance = 2R
To find the current I;
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
[tex] V = IR[/tex]
Where;
V represents voltage measured in voltage.
I represents current measured in amperes.
R represents resistance measured in ohms.
Making current (I) the subject of formula, we have;
[tex] I = \frac {V}{R} [/tex]
Substituting into the formula, we have;
[tex] I = \frac {V}{2R} [/tex]
[tex] I = \frac {1}{2} * \frac {V}{R} [/tex]
[tex] I = \frac {1}{2} * I [/tex]
Therefore, if the resistance of the resistor is doubled, the current through the resistor is halved.
the energy of a water wave is most closely related to its
i believe the awnser is Amplitude
Circular Motion A 650-kg car moving at 8.5 m/s takes a turn around a circle with a radius of 48.0 m. Determine the acceleration acting upon the car. Use a = v2/ r
Answer:
Explanation:
The mass of the car doesn't matter because On a flat curve the mass of the car does not affect the speed at which it can stay on the curve. You would need the mass if you were solving the the centripetal force acting on the car, but not the acceleration.
[tex]a=\frac{v^2}{r}[/tex] and filling in
[tex]a=\frac{(8.5)^2}{48.0}[/tex] and we need 2 significant digits in our answer. That means that
a = 1.5 m/sec²
Three balls with different masses are shown below.
(picture of beach ball) - 85g
(picture of football) 425g
(picture of baseball) - 149g
If the same amount of kicking force is applied to each ball, which will travel the farthest?
F - They will all travel the same distance because the applied force is the same
G - the baseball because it's the smallest
H - The football because it has the highest mass and was designed for kicking
J - the beach ball because it has the lowest mass
(btw it's a football, not soccer ball)
Answer:
$10 a g
Explanation:
Answer:
As The mass of the beach ball is having lowest magnitude when compared with the other balls given so when apply the same magnitude of force to all the balls then the beach ball due to its lighternessand also its inertia of rest would not resist the force so much so when you apply the force to this ball it would starts to roll and covers the maximum diatance whwn compared with the other ball only in the condition when same magnitude of force applied.Thats this ball would do more work than the other ball.The mass also influences the velocity carried by the body and also the kinetic energy possessed by the body. More the force applied more the distance it would cover
Hope it helps
In Kevin study he knows that each participant has an equal probability of being placed into each of his conditions Kevin must have used
Answer:
Kevin must have used simple random sampling.
Explanation:
We can say that Kevin used simple random sampling. This is because this type of sampling allows elements to be taken from a population in a completely random way, to form a sample. In this case, each element, or individual, as shown in the question above, has the same probability of being selected to compose the sample, since this selection is completely random.