Answer: what are the answers
Explanation:
Answer:
Radio waves have the longest wavelengths in the EM spectrum, according to NASA, ranging from about 0.04 inches (1 millimeter) to more than 62 miles (100 kilometers). They also have the lowest frequencies, from about 3,000 cycles per second, or 3 kilohertz, up to about 300 billion hertz, or 300 gigahertz
Explanation:
Select the correct answer.
Anna will wear a black dress when she attends her cousin's wedding. Which color(s) does the dress absorb?
O A.
all colors
B.
no colors
Ос.
red and green
OD. white
Answer:
B
Explanation:
B
A boy of mass 50 kg walks up a staircase of 10 steps each 15 cm high. Calculate the work done.
Answer:
735 J
Explanation:
Total height reached(displaced)=10x15 cm
= 10 x 15/100 m
= 1.5 m
Workdone = F.S (force x displacement)
Here, the boy is traveling against the gravitation force(=mg) , and traveled a height of 1.5m
Hence,
Workdone = 50 x 9.8 x 1.5 J
= 735 J
Answer:
750J
Explanation:
Solution;
M=50kg, g=10m/s
Distance=15×10÷100
=1.5m
W=M×g×h
=50×10×1.5
=750J
At what time does the oscillator shown below first reach its Equilibrium Position?
1864+7397=8199436 thats it
Answer:0.45s
Explanation:
Trust me
Calculate What is the change in speed of the P
wave as it goes from the mesosphere to the outer
core? From the outer core to the inner core?
lithc
asthenosphere
Define an element and give 5 examples of elements that are important to life .
ASAP please there are points given
Answer:
A pure substance consisting only of atoms with the same number of protons in their nuclei-these appear on the periodic table
Oxygen
Hydrogen
Carbon
Sulfur
Phosphate
Nitrogen
Magnesium
Calcium
Potassium
Chlorine
(I know that these are more examples than needed, but you can use any)
please go to my profile and answer the work and energy questions, i only have 20 minutes left to finish it
Answer:
Okay I'll do it right now
Explanation:
:)
1. Which of the following has the largest amount of heat?
A. 4186 J
B. 10 Cal
C. 100 cal
D. 0.1 kcal
A lamp is on a dimmer switch. As you turn the switch from the lowest setting to the highest setting, which statement would best describe what happens? A) The light bulb consumes less electricity, burns dimmer and uses more power . B) The light bulb consumes more electricity, burns brighter and uses more power ) The light bulb consumes less electricity, burns brighter and uses more power. D) The light bulb consumes more electricity, burns brighter and uses less power.
As turn the switch from the lowest setting to the highest setting, the light bulb consumes more electricity, burns brighter and uses more power.
Rate of power consumption
The rate of power consumption is proportional to current flowing in a circuit and time of current flow.
P = I²Rt
where;
I is current in the circuitt is timeThus, as turn the switch from the lowest setting to the highest setting, the light bulb consumes more electricity, burns brighter and uses more power.
Learn more about power here: https://brainly.com/question/13881533
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Bees can see into the ultraviolet region of the electromagnetic spectrum. Compared with humans, bees can sense electromagnetic waves that have a lower frequency and a shorter wavelength. a higher frequency and a longer wavelength. a lower frequency and a longer wavelength. a higher frequency and a shorter wavelength.
Answer:
a higher frequency and a shorter wavelength.
Explanation:
The correct answer would be a higher frequency and a shorter wavelength.
The visible region of the electromagnetic spectrum lies between 400 and 750 nm while the ultraviolet region lies between 300 and 400 nm. Hence, it means that bees are able to see at a shorter wavelength compared to humans.
There is an inverse relationship between the wavelength and frequency of a wave. the longer the wavelength of a wave, the shorter the frequency, and the shorter the wavelength, the higher the frequency. The means that bees are not just able to see at a shorter wavelength but at a higher frequency compared to humans.
Answer:
D
Explanation:
How can you separate chalk from
chalky water?
Answer:
Yes
Explanation:
Because the call can evaporate from the water.
Answer:
A centrifuge is utilized to isolated little sums of strong held in suspension from the fluid. For case, chalk from water. The centrifuge contains test-tubes that are spun around at tall speed that causes the strong to sink to the foot of the tube. The fluid is the tapped (poured off) clearing out the strong behind.
Two 15 N forces in same directions are acting on an object. What is the magnitude of the net force?
Answer:
30N
Explanation:
if it is pushing the object to the left then it would be 30N left and if it is pushing the object to the right it would be 30N right
Answer: 30N
Explanation:
When electrons lost a blank ion is formed
When electrons are gained a blank ion is formed
Answer:
When electrons are lost, a positively charged ion is formed. When electrons are gained, a negatively charged ion is formed. The proton and the electron have same magnitude of charge ( ), but the proton's charge is positive while the electron's charge is negative.
Explanation:
A student wearing frictionless in-line skates on a horizontal surface is pushed by a friend with a constant force of 50.0 N.
How far must the student be pushed, starting from rest, so that her final kinetic energy is 350 J?
Pleaseeeee
Answer:
Distance = 7 meters.
Explanation:
Given the following data;
Force = 50N
Kinetic energy = 350J
To find the distance;
We know that energy possessed by an object over a distance represents the work done by the object.
Mathematically, work done is given by the formula;
Workdone = force * distance
350 = 50 * distance
Distance = 350/50
Distance = 7 meters.
what are solar winds made of?
A. charged particles
B. nitrogen gas
C. oxygen gas
D. plasma
Answer:
Charged particles
Explanation:
It's correct
Answer:
Charged particles
Explanation:
The solar wind is a stream of energetic (charged) particles that the Sun ejects. These include hydrogen's electrons and protons, as well as atomic nuclei like helium, which are known as alpha particles. There are also evidence of 'heavy ions' and carbon, nitrogen, oxygen, neon, and magnesium atomic nuclei.
In this version of golf the winner is the golfer who wins the greater number of holes. 1.miniature golf
2. match play
3.tournament play
4.stroke play
need answer ASAP
Answer:
Tournament play
Explanation:
What is the density of a 10.0 g object with a volume of 4.00 cm^3?
Answer:
d=m/v
d=10g/4cm³
d=2.5g/cm³
Which model shows 4 electrons in the outer shell of the atom?
A. 1
B. 3
C. 2
D. 4
Model 4 shows 4 electrons in the outer shell of the atom. Option D is correct.
What is an atom?The atom consists of matter that may be split without releasing electrical charges.
It's also the smallest unit of matter with chemical element features. As a result, the atom is the fundamental unit of science.
In the nucleus, proton and the neutron is existing. The condition of the atom to be electrically neutral is that the number of the proton and electron should be the same.
The outermost shell, is the shell containing electrons in which limited number of the electron can be existed. When an atom's outermost electron shell is full, it is the most stable and least reactive.
Model 4 shows 4 electrons in the outer shell of the atom. It is simply obtained by calculating the no electron in the shell.
Hence, option D is correct.
To learn more about the atom, refer to the link;
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if speed is the same for two planets, which planet has a longer orbit? PLSSS
HELP ME!!!
Answer:
Pluto because is the farest away from the sun
When developing a model of the cycling of water between the land, the ocean, and the atmosphere, one must include the forces that propel the water. For the model, these forces would be-
Answer: gl
Explanation:
When developing a model of the cycling of water between the land, the ocean, and the atmosphere. For the model, these forces would be gravity and sunlight( evaporation).
Sunlight causes evaporation and propels oceanic and atmospheric circulation, which transports water around the globe. Gravity causes precipitation to fall from clouds and water to flow downward on the land through watersheds. Energy from the sun and the force of gravity drive the continual cycling of water.
What is gravity ?"Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun."
What is energy ?"Energy is defined as the “ability to do work, which is the ability to exert a force causing displacement of an object.”
What is water cycle ?"The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow."
Know more about water cycle here
https://brainly.com/question/1151425
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A student holds two iron magnets, one in each hand. The south pole of one magnet is pointed toward the south pole of the other magnet. As the magnets get closer to each other, they will–
A-attract more strongly.
B-attract more weakly.
C-repel more strongly.
D--repel more weakly.
Four resistors , R1=12ohms, R2= 15 ohms , R3= 18 ohms and R4=10 ohms are connected to 6 v battery in series what is the total resistance in the circuit?
Answer:
55 ohms
Explanation:
if it was series circuit, then you just need to add all the resistances
Which of the following was not first proposed by Charles Darwin?
A. Natural selection
B. Genetic drift
C. Struggle for existence
D. Survival of the fittest
Answer:
C. Struggle for existence
Explanation:
Have a great day
why would a circuit stop when you turn off the switch?
Answer:
When the circuit switch is off, no electricity will flow and then the circuit is called an open circuit. Electricity will not flow in open circuit.
Explanation:
I'll give brainiest if you answer this
65mi/hr South is an example of
Answer:
It's an example of velocity.
True or False: If a wave's wavelength is short, its frequency is high.
A. True
B. False
PLEASE HELP
TOPIC - CONVECTION
Answer:
Dry air burns out and gets warmIt's smoke and smoke always risesNot oursIt makes sure no air is inside bc air gets cold an freezesI really need the answer to this question please
A4.0 μF capacitor is connected in series with a 2.0 MΩ resistor, and this combination is connected across an ideal 44.0 V DC battery. Initially the charge on the capacitor is zero. What is the current in the circuit when the capacitor has reached 80 % of its maximum voltage?
Answer:
i = 17.6 10⁻⁶ A
Explanation:
The charge of a capacitor in a series circuit is
i = [tex]\frac{v_o}{R}[/tex] [tex]e^{ - \frac{t}{RC} }[/tex] (1)
R i = V₀ e^{ - \frac{t}{RC} }
[tex]\frac{V}{V_o}[/tex] = e^{ - \frac{t}{RC} }
they tell us that the voltage is 80% bone
[tex]\frac{V}{V_o}[/tex] = 0.80
we substitute
0.80 = e^{ - \frac{t}{RC} }
ln 0.80 = [tex]- \frac{t}{RC}[/tex]
t = - RC ln 0.80
in the problem they give the value of R = 2.0 10⁶ Ω and C = 4.0 10⁻⁶ F
t = - 2 10⁶ 4 10⁻⁶ ln 0.8
t = 1,785 s
we substitute in equation 1
i = [tex]\frac{44.0}{2 \ 10^6}[/tex] [tex]e^{- \frac{1.785}{2 \ 4 } }[/tex]
i = 22 10⁻⁶ [tex]e^{-0.2231}[/tex]
i = 17.6 10⁻⁶ A
A stretched wire under tension T Produces a note of frequency 60Hz
when plucked. Calculate the frequency if the tension in the wire is increased by 125%
The answer to your question is 96 Hz