Answer:
A microwave
Explanation
The human retina can only detect incident light that falls in waves 400 to 720 nanometers long, so we can't see microwave or ultraviolet wavelengths. This also applies to infrared lights which has wavelengths longer than visible and shorter than microwaves, thus being invisible to the human eye.
Answer:
C.) Microwave
Explanation:
USAtestprep
Heat can be transferred in several ways. Which of the following is an example of conduction? (DOK 2) A The sun is shining on a metal chair. B A fire in the fireplace is heating a room C Someone touching a hot metal pan DA hair dryer blowing your hair
Answer:
Explanation:
G yvyvybybybububunununu
which instrument measure the intensity of sound
Answer:
Decibel Meter
A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, a sound level meter uses a microphone to capture sound.
Answer:
Decibel Meter
Explanation:
A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure.
help yo if u can answer quicly
Answer:
maybe c
I think its c
hope it helped
Two trucks have the same mass. Which truck will have a greater amount of kinetic energy? b. The truck with less mass d. The trucks will have the same kinetic energy c. The truck with greater speed a. The truck with more mass
Answer:
c. The truck with greater speed
Explanation:
Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;
a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.
b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
[tex] K.E = \frac{1}{2}MV^{2}[/tex]
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents speed or velocity measured in metres per seconds square.
From the above formula, we can deduce that the kinetic energy of an object is directly proportional to the square of the value of its velocity or speed.
Hence, the truck with greater speed would have a greater amount of kinetic energy.
Answer:
The trucks will have the same kinetic energy.
Explanation:
Both of the trucks have the same mass, so they have the same kinetic energy. Hope this helps!
URGENT HELP PLS
Suppose a force F, = (1/3)x acts on an
object. Assume at x = 0 the force pushes
the object and it starts moving to the right.
What happens to the magnitude of the work
done as the object moves to the right?
A. More work is done
B. Less work is done
C. A constant amount of work Is done.
D. It is impossible to predict
Answer:constant amount of work is done
How are wave properties and energy related?
EXPLAIN
Answer:
The higher the amplitude, the higher the energy. To summarise, waves carry energy. The amount of energy they carry is related to their frequency and their amplitude. The higher the frequency, the more energy, and the higher the amplitude, the more energy.
A worker leaves home at 9:00 AM, travels 40 km to the office, and then returns home at 5:00 PM. What is the magnitude of the worker's displacement during this 8-hour span of time?
Answer:
The answer is 0km
Explanation:
Un vehiculo se desplaza con movimiento rectilio uniforme. Sabiendo que recorre 90 km en 3 horas. Averiguo la velocidad en m/s.
Answer:
Velocidad = 500 m/s
Explanation:
Dados los siguientes datos;
Distancia = 90 km
Tiempo = 3 horas
Conversión;
Por distancia:
1 kilómetro = 1000 metros
90 kilómetros = 90 * 1000 = 90,000 metros
Para el tiempo:
1 hora = 60 segundos
3 horas = 60 * 3 = 180 segundos
Para encontrar la velocidad en m/s;
Matemáticamente, la velocidad viene dada por la ecuación;
[tex] Velocidad = \frac {distancia} {tiempo} [/tex]
Sustituyendo en la fórmula, tenemos;
Velocidad = 90000/180
Velocidad = 500 m/s
Explain why does the bowling ball decelerate as it travels along the lane.
Answer:
Due to the force of friction
Explanation:
Whenever an object comes in contact with a surface the force of friction comes into play
Which slows down the object (in this case the bowling ball)
Hi, I'm stuck on the problem: Consider a resistor (R=1000 kΩ) and a capacitor (C=1μF) connected in series. This configuration is connected in series to a battery with an emf of 10 V. Find the maximum voltage in [V] across the capacitor. Find the maximum charge on the capacitor in [µC]. How long will it take until the capacitor has a potential difference of 5 V?
Answer:
Following are the responses to the given choices:
Explanation:
The maximum pressure is 10 V from across condenser.
The highest charge mostly on condenser.
[tex]vc = 10\times 1\ mf\\\\[/tex]
[tex]= 10^{-5}\ C[/tex]
The time it takes for the condenser to be 5 V different.
[tex]time = ln_2 \times 1000 \times 1mf[/tex]
[tex]=0 .69 \times 10^{-3}\ sec[/tex]
Atoms have the same number of electrons as what other particle?
A. Protons
B. Neutrons
C. Photons
D. Atomic mass
An increase in the atomic number____the atomic radius moving from
left to right across a period.
Answer here
Answer:
to
Explanation:
differences between weightlessness in space and weightlessness in earth
Answer:
it depends on a person's own weight
Answer:
The gravity is roughly the same. The inverse square law applies to gravity and that means that being 60 miles above Earth is about the same as being on Earth. The thing is, they are going really fast in an orbit and thus falling around the Earth. The weightlessness comes from a sort of cancellation of gravity pulling them down and their going perpendicular to that force. The forces are cancelling and making them relatively “weightless”. It’s not really weightlessness but just an equilibrium reached between the two accelerations of gravity and their motion against the pull of the Earth.
Explanation:
If a=15 m/s², m=2 kg, F=? *
30 N
30kg
30 m/s²
7.5 N
Answer:
F = 30 N
Explanation:
Which of the following are true about electrons? a.) They are positively charged b.) They are negatively charged c.) They are found inside the nucleus d.) a & c
Answer:
A and C
Explanation:
BRAINLIEST PLS
Answer:
b
Explanation:
The answer is b.. because the charge of electrons is opposite to that of protons.. the combination of the equal number of protons and electrons has a total charge of zero(0)....
what is an echo?
give me an short answer
Answer:
Echo..... when the sound reflects back
Can sugar molecules produced from photosynthesis be rearranged into different compounds carry out life process
Answer:
Yes, the sugar molecules produced from photosynthesis can be rearranged into different compounds to carry out life processes such energy producing compounds, energy storage compounds, body building compounds, and compounds of other types of food
Explanation:
a) The sugar can be broken down in a plant cell to produce ATP and then energy through cellular respiration as follows;
C₆H₁₂O₆ + O₂ 6CO₂ + 6H₂O + ATP
The produced energy can be used as power for cellular activities, such as the synthesis of protein and cell division
b) The produced sugar can be linked together by enzymes to form starch which is a form of chemical storage of energy as follows;
Sugar C₆H₁₂O₆ transformed into starch (C₆H₁₀O₅)ₙ
c) The sugar can be used in building the plant body by forming cellulose which is a form of starch
d) The sugar can be transformed into proteins and fat which are other types of food such as compounds containing sugar produces compounds containing fat based compounds
There is a fixed voltage across a resistor, and you measure a current of c1 A. If you replace the resistor with one that has twice the resistance value, how much current will you measure? a) 0.2 A b) 0.5 A c) 0.8 A d) 1.1 A
Answer:
Option B
Explanation:
Given
The current flowing through the circuit = 1 Ampere
As we know
I is inversely proportional to resistance.
I α 1/r
or I = k/r
If the resistor "r" is replaced by any resistor "R" with resistance = 2r, then the current will be
I = 1/2 of 1 ampere
I = 0.5 Ampere
Hence, option B is correct
The process of generating an electric current from the motion of a conductor in a magnetic field is
a.
conduction.
b.
induction.
c.
motion.
d.
magnetism.
Does anyone got notes on Newtons Law of Universal Gravitation?
Answer:
I swear I am not a bot! but I think people post some notes on g00gle as well there are many things you can find when searching
Explanation:
copy/paste
( I have NO idea if these will help you but I try)
https://www.richlandone.org/site/handlers/filedownload.ashx?moduleinstanceid=21002&dataid=21739&FileName=Gravitation%20Notes.pdf
https://www.physicsclassroom.com/class/circles/Lesson-3/Newton-s-Law-of-Universal-Gravitation
https://courses.lumenlearning.com/boundless-physics/chapter/newtons-law-of-universal-gravitation/
El potencial electrico debido a una carga en un punto P es de 45 000 V. Si la magnitud de la carga es 4x10-6C. A que distancia esta el punto P de la cartga
Answer:
0,8 m
Explanation:
Recordemos que el potencial eléctrico V se da como
V = q / 4πεod
Dónde;
q = cantidad de carga
εo = permitividad del espacio libre
d = polvo de separación
Pero;
1 / 4πεo = 9 * 10 ^ 9
Entonces;
V = 45 000 V
q = 4x10-6C
45.000 = 9 * 10 ^ 9 * 4x10-6 / d
d = 9 * 10 ^ 9 * 4x10-6 / 45,000
d = 0,8 m
A Normal force of 16N is distributed uniformly on top surface of a cube of edge 6cm. The
pressure on this surface is Rx104Pa. Find the value of R
Answer:
approx. 0.43
Explanation:
Area of the side of the cube is 36 cm or 0.36 m, P= F/A, so R*104=16/0.36, R*104≅44.44, R≅0.43
this is known as the -------of light.
Answer:
rectilinear propagation of light
reflection of light
refraction of light
12. You and a friend are playing a game of basketball. Explain why the
basketball appears orange, be sure to use terms reflected and absorbed
in your answer. [4]
Help me plssss I’m giving out brainlest and 10 points
Answer:
If the basket ball appears orange then it can be said that it reflects orange light
Explanation:
The color of the object reflected by an object is the color which is viewed by a viewer. Hence, if the basket ball reflects the orange color light , then the ball will appear orange in color to the viewer.
The light absorbed by the object has no role in deciding the color of the object visible to a viewer.
hence, if the basket ball appears orange then it can be said that it reflects orange light.
Uhm? I listen in class but I can remember all of that wat is this omg?
Answer:
The side with the same length would be D.) QT
Explanation:
The problem is asking for the side with the same length, and the shapes are congruent so the correct one would be the same side on the other shape. Which is D.) QT
1. This force keeps an object floating _______________________ 2. When the force of gravity is stronger then the buoyant force an object will ___________ 3. When the buoyant force is the same as the force of gravity an object will ____________ 4. When the buoyant force is greater than the force of gravity an object will ____________ 5. Why does an aircraft carrier float
Answer:
1) Buoyant force, 2) sinks, 3) equilibrium, 4) fleet , 5) LIFT force
Explanation:
A body in a fluid is subjected to two forces, its weight and the thrust
sun F = B - W
the em
bid is always vertical and contrary to weight, let's analyze and complete the different situations presented
1) Buoyant force
2) sinks B <W
3) equilibrium B = W
4) fleet B> W
5) by the sum of two forces:
* Thrust, but the density of air is much less than the density of water, therefore the thrust in the air is less.
* The other force in airplanes the lift force given by the difference in the path of the air when the plane moves, which translates into a pressure difference between the upper part of the wing and the lower part, it is force is called LIFT force
A positive charge of 8.0 × 10-4 C is in an electric field that exerts a force of 3.5 × 10-4 N on it. What is the strength of the electric field?
Answer:
E = 0.437 N/C
Explanation:
Given that,
Charge, [tex]q=8\times 10^{-4}\ C[/tex]
Electric force, [tex]F=3.5\times 10^{-4}\ N[/tex]
Let the strength of the electric field is E. We know that, the electric force is given by :
F = qE
Where
E is the electric field strength
[tex]E=\dfrac{F}{q}\\\\E=\dfrac{3.5\times 10^{-4}}{8\times 10^{-4}}\\E=0.437\ N/C[/tex]
So, the strength of the electric field is equal to 0.437 N/C.
Se dea caer una pelota de basquetbol desde una altura de 90 metros.Calcular: El tiempo en que demorara en caer y a velcidad con la que llega al suelo
Answer:
1. t = 4.24 s
2. [tex]v_{f} = 42.43 m/s [/tex]
Explanation:
Podemos encontrar el tiempo de caída con la siguiente ecuación:
[tex] v_{f} = v_{0} + gt [/tex] (1)
En donde:
[tex] v_{f}[/tex]: es la velocidad final de la pelota
[tex] v_{0}[/tex]: es la velocidad inicial = 0 (se deja caer)
g: es la aceleración debida a la gravedad = 10 m/s²
Debemos hallar primero la velocidad final. Podemos usar la ecuación:
[tex] v_{f}^{2} = v_{0}^{2} + 2gh [/tex] (2)
En donde:
h: es la altura = 90 m
[tex] v_{f} = \sqrt{2gh} = \sqrt{2*10 m/s^{2}*90 m} = 42.43 m/s [/tex]
Entonces, la velocidad con la que la pelota llega al suelo es 42.43 m/s.
Ahora podemos encontar el tiempo que tarda en caer la pelota resolviendo la ecuación (1) para "t":
[tex] t = \frac{v_{f}}{g} = \frac{42.43 m/s}{10 m/s^{2}} = 4.24 s [/tex]
Por lo tanto, la pelota tarda 4.24 segundos en caer.
Espero que te sea de utilidad!
Identify the relationship between the two quantities in the given question as causation or
correlation.
1. The number of cold, snowy days and the amount of hot chocolate sold at a ski
resort.
2. The number of miles driven and the amount of gas used.
3. The number of additional calories consumed and the amount of weight gained.
4. The age of a child and his/her shoe size.
5. The amount of cars a salesperson sells and how much commission he makes.
6. The number of cars traveling over a busy holiday weekend and the number of
accidents reported.
7. The number of homework assignments turned in and how well an individual does in
class.
8. The annual salary and blood pressure for men ages 20-60
Answer:2. The number of miles driven and the amount of gas used.
Explanation:
Which can be observed both on Earth and in an accelerating ship in space that is free from the effect of any gravitational field? Check all that apply.
chairs floating in midair
apples falling from trees
people's feet touching the ground
sky divers moving toward the ground
balls bending downward after being thrown
Answer:
apples falling from trees people's feet touching the ground sky divers moving toward the ground balls bending downward after being thrownExplanation:
When a space ship is accelerating in space, there is a force known as Inertia that kicks in. Inertia will mirror the effects of gravity on the ship even if there is no gravitational field effect such that anything that would happen where there is gravity, would continue to happen.
This means that apples will fall from trees, people's feet will touch the ground, sky divers will be pulled downwards and balls will bend downwards when thrown as well. These are the same effects expected on earth where gravity pulls things towards the earth's core.
Answer:
B,C,D,E
apples falling from trees
people’s feet touching the ground
sky divers moving toward the ground
balls bending downward after being thrown
correct on EDGE2021