Answer:
Explanation:
The different types of radiation are defined by the the amount of energy found in the photons. Radio waves have photons with low energies, microwave photons have a little more energy than radio waves, infrared photons have still more, then visible, ultraviolet, X-rays, and, the most energetic of all, gamma-rays
For normal weight students, regular physical activity is unnecessary." True O False
Answer:
The answer is False
Explanation:
to keep the body active and going in the good state
Answer:
False ....Even for a normal student , in order to maintain the fitness they should exersice ...
What does static on the radio refer to?
A. amplitude
O B. frequency
C. noise
D. station
Answer:Station
Explanation:
What type of motion does this graph represent?
(b) Figure 4 shows a car travelling on a motorway.
A passenger wants to check the accuracy of the speedometer of the car.
The car is travelling at a constant speed.
The passenger has a stopwatch.
The lamp posts are 40 m apart.
lamp post
Figure 4
Describe how the passenger could determine the speed of the car as accurately
as possible.
(3)
Answer:
To calculate anything - speed, acceleration, all that - we need data. The more data we have, and the more accurate that data is, the more accurate our calculations will be. To collect that data, we need to measure it somehow. To measure anything, we need tools and a method. Speed is a measure of distance over time, so we'll need tools for measuring time and distance, and a method for measuring each.
Conveniently, the lamp posts in this problem are equally spaced, and we can treat that spacing as our measuring stick. To measure speed, we'll need to bring time in somehow too, and that's where the stopwatch comes in. A good method might go like this:
Press start on the stopwatch right as you pass a lamp postEach time you pass another lamp post, press the lap button on the stopwatchPress stop after however many lamp posts you'd like, making sure to hit stop right as you pass the last lamp postRecord your dataCalculate the time intervals for passing each lamp post using the lap dataCalculate the average of all those invervals and divide by 40 m - this will give you an approximate average speedOf course, you'll never find an *exact* amount, but the more data points you have, the better your approximation will become.
Car A has a mass of 2000 kg and is going 28 m/s east.
Car B has a mass of 4000 kg and is going 13 m/s west.
What will be the momentum of both cars together after the collision?
several Non-Examples of mechanical weathering are?
Answer:
The removal of rock particles by wind, water, ice, or gravity,mining, carving, carving
Explanation:
help pls. will make brainliest
Answer:
Explanation:
D the 13 amp fuse, so that the cable won't be over it's current limit.. and the heater will have lots of current.. to keep you toasty :P if you pick any fuse smaller then the 13 the heater will "blow" those fuses :/
What acceleration would be achieved by a 5N thrust motor in a 0.30kg
Answer:
F=ma
5N=0.3a
a=5/0.3=16.66m/s²
PLEASE GIVE BRAINLIEST
Answer:
16.7
Explanation:
acceleration=force/mass
In order to attain orbit around earth, the ATLAS-V rocket must accelerate up to a
speed of about 7700m/s in about 11 minutes.
a) What average acceleration is required to accomplish this?
b) If the mass of the rocket + fuel is 3.05x105 kg, what is the applied force of the engine?
The linear expansivity of a metal p Is twice that of metal q. When these metals are heated through the same temperature, their increase in length is the same. Calculate the ratio of the original length of p to that of q
Answer:0-------0
do we have options?
Explanation:
a bomb is dropped from a plane fying at a constant horizontal velocity at an altitude of 300m. where is the bomb after 2 seconds?
Answer:
it will be almost on the ground
Explanation:
i say this because the boom is heavy and its going down fast so it will not be in the air or on the floor it will be akmost o the ground.
You flip a coin straight up if the coin reaches a high point of 0.25 m above where you released it what was the initial speed?
Answer: 2.21 m/s
Explanation:
Given
Coin reaches a height of 0.25 m above the launch point
Suppose u is the initial speed of the coin
Using the equation of motion
[tex]\Rightarrow v^2-u^2=2as\\[/tex]
Putting values
[tex]\Rightarrow 0^2-u^2=2\times g\times s=2\times (-9.8)\times 0.25\\\Rightarrow u^2=4.9\\\Rightarrow u=2.21\ m/s[/tex]
Thus, the initial velocity is 2.21 m/s
How much kinetic energy does 150kg boulder have if it is rolling down a hill with a speed of 5m/s? (KE = 1/2mv2) 375J 310J 1875J 1500J
Answer:
1875J
Explanation:
KE = 1/2mv2
=0.5 × 150kg × 5m/s^2
= 1875J
Therefore, the kinetic energy of the boulder is 1875J.
Please help!!!! I need a good grade on this test !!!! Plssss
Answer:
There’s nothing in the pic
Explanation:
Just like my bf ... nonexistent
When ripples pass though a gap in a barrier what is observed
when you apply 1.5 V across unknown ohmic resistor you observe current of 1.5 mA. You expect to observe current of _____ mA when you apply 3 V across the same resistor.
0.3 mA
3 m A
30 mA
300 mA
Other:
Answer:
answer is 3mA
Explanation:
since V=IR
and 1.5v=1.5mA x 1ohms
definitely
it's gonna be directly proportional
means 3v=3mA
If the wheel then slows to rest in 9.46 s while making a quarter turn, calculate the magnitude of its average angular speed during that time.
Answer:
0.16 rad /s
Explanation:
Given that :
Time, t = 9.46 s
Quarter turn = 1/4 rev
θ = wt
w = angular speed `. ; t = time in second
1 rev = 2 pi
θ = 2pi
1/4 θ = 1/4 * 2pi = pi/2
θ = wt
pi/2 = w * 9.62
3.14 = w * 9.62 * 2
3.14 = 19.24w
w = 3.14 / 19.24
w = 0.1602040
w = 0.16 rad /s
plssss helpppp it’s urgent
does a wall or door have more inertia?
Answer:
door
Explanation:
What is a 7 letter word that describes the relationship between frequency and period?
how much kinetic energy is produced when an object having mass of 50gm throwing with velocity 80m/s?
Answer:
KE = 160 J
Explanation:
KE = 1/2mv²
mass= 50gm = 0.05kg
velocity = 80
KE = 1/2 x 0.05 x 80²
= 1/2 x 0.05 x 6400
= 160
The kinetic energy produced in an object is equal to 160 J.
What is the kinetic energy and potential energy?The energy possessed by a moving body due to its motion is known as kinetic energy. Work must be done in order to change the kinetic energy of a moving object.
The kinetic energy of a moving body can be measured from the formula mentioned below:
K.E. = ½mv² where ‘m’ is the mass and ‘v’ is the velocity of the object.
Potential Energy (P.E.) can be described as the stored energy in an object due to its position and is expressed as P.E = mgh where m, g, and h are the mass, gravitational acceleration, and height respectively.
Given, the mass of the object =, m = 50 g = 0.05 Kg
The velocity of the object, v = 80 m/s
The kinetic energy = (1/2)× 0.05 ×(80)²
K.E. = 160 J
Learn more about kinetic energy, here:
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Fission reactions are currently used to provide energy for many different sources. Where does the energy produced during the reaction come from?
Answer: From the mass lost during the reaction, or the mass defect.
The energy produced during a reaction come from the heat energy which is released during splitting of uranium atoms.
What is a fission?Nuclear energy originates from the splitting of uranium atoms in the atmosphere, a process called as fission. This reaction generates heat energy to produce steam, which is used by a turbine generator to generate electric energy. Because, the nuclear power plants do not burn fuel, they do not produce any greenhouse gas emissions.
Uranium and plutonium are the most commonly used atoms for fission reactions in nuclear power reactors because they are very easy to initiate and control with time. The energy which is released by fission in these reactor heats water into the steam. The steam generated is used to spin a turbine to produce carbon-free electric energy.
Learn more about Fission here:
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What does the atomic number of an atom tell us?
How much the atom weighs
The number of protons in the atom
Which column the element is in on the periodic table
The number of electrons it is likely to lose
Explanation:
The atomic number (Z) of an element is the number of protons in the nucleus of each atom of that element. This means that the number.
That means 12.01 grams of carbon contains 6.0225*1023 atoms of carbon. If you divide the atomic weight by Avogadro's number, you get the mass of one atom. In the case of carbon, that ends up being 0.000000000000000000000019942 grams.
The number of protons is the atomic number, and the number of protons plus neutrons is the atomic mass. For hydrogen, the atomic mass is 1 because there is one proton and no neutrons. For helium, it is 4: two protons and two neutrons.
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
Which of the following is the best example of work being done on an object? *
-holding a 50kg weight
-lifting a bag of groceries from the floor
-holding down a compressed spring
-pushing a boulder that will not move
Answer:
lifting a bag of groceries.
work is force by distance, if there is no movement there is no work done
Ava walked 3 blocks south, 5 blocks east, and then another 3 blocks south. Which diagram has the correct vectors for Ava's walk and her displacement ? Remember, the starting point of each part of the trip is the beginning of the arrow and the ending point is the pointed end of the arrow.
(Sorry i couldn’t get all the answers in one picture, and Brainly won’t let you use more then one)
Answer:
A.
Explanation:
Model A shows the arrow moving down 3 (south), right 5 (east), then again 3 down (south).
How do you think the body deals with consuming a lot more
calories than are burnt?
Answer:
The body stores it as fat
Explanation:
Answer:
The body deals with consuming alot more calories than are burnt by gaining weight or holds it all up, while if you burn your calories, it'll lose weight :3
Explanation:
:3
Why is average global temperature the most important value when talking about climate change?
Answer:
The most important number's formal name is "equilibrium climate sensitivity," and it's meant to represent the new equilibrium in surface temperatures after a change in the amount of the Sun's energy trapped here on Earth rather than radiated back to space.
Explanation:
please give me brain list and follow
The average global temperature is the most important value when talking about climate change because the Earth's temperature is increasing day by day due to the trapping of the Sun's light energy.
What is temperature?The temperature is the degree of hotness or coldness of the object.
The equilibrium climate sensitivity is the equilibrium in Earth's surface temperature. After the Sun's trapped energy is reduced, the climate changes accordingly.
Thus, the average global temperature is the most important value when talking about climate change because the Earth's temperature is increasing day by day due to the trapping of the Sun's light energy.
Learn more about temperature.
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#3
The speed of sound is 346 m/s. If a sound wave travels at a frequency of 55 Hz, what would its wavelength be?
#4
If the same wave in question #3 travels through water with the same wavelength, at what frequency will it be traveling? (speed of sound in water = 350 m/s)
Answer:
The first one is 6.3m or 6.25m
The second is 60 m/s
Explanation:
What type of motion does this diagram represent? *
Answer:
object at rest
Explanation:
What could you do to increase the electric potential energy between two negatively charged particles by a factor of 16?
Answer:
Increase the charge of one particle by a factor of 16
Explanation:
