Answer:
C. Gamma Rays
Explanation:
A P E X
Answer:
C. Gamma rays
Explanation:
got it right
What is the difference between Mass and Weight?
Answer: Mass is the quantity of matter in an object whereas weight is the force of gravity on an object.
Weight is dependent on gravity while mass is independent on gravity
Explanation:
An electron has a mass of 9.1x10-31 kg. What is
its momentum if it is travelling at a speed of
3.5x10 m/s?
Answer:
3.185×10^-29 kgm/s
Explanation:
Momentum(p)=mass×velocity
=9.1×10^-31×3.5×10
=3.185×10^-29 kgm/s
what is hypermatropia?
Answer:
Hypermetropia (hyperopia, long-sightedness or far- sightedness) is a form of refractive error in which parallel rays of light coming from infinity are focused behind the light sensitive layer of the retina, when the eye is at rest.5 Dec 2017
Explanation:
thank me later
A wave transports what
from one place to another.
A friction
OB. atoms
O C. energy
OD, amplitude
Where are bar magnets the strongest?
Answer:
The magnetic field is strongest at the center and weakest between the two poles just outside the bar magnet. The magnetic field lines are densest at the center and least dense between the two poles just outside the bar magnet.
Explanation:
3 track athletes run the 400 meter dash, Jackie 51 seconds and 1500 joules
of work, Cayla 53 and 1500 joules of work, and Jenelle 47 seconds and
1500 joules of work. What is the relation ship between power and time?
inversely proportional
o
inversely proportional to the square
directly proportional
O directly proportional to the square of the power
Answer:
ish all usual isaiah or easier fall iF.Hg. diff potty off radial ish usually appraisal
what happens to an electromagnetic wave as it passes from space to matter?
(no keyboard spam or links)
I'll give brainiest
Answer:
When an electromagnetic wave passes from space to matter, some part of the energy is absorbed by the matter and it increases its energy. The wave may reflect and some part may pass through the matter depending on the amount of energy they have. The amplitude of the wave decreases if some parts of it are reflected.
Electromagnetic radiation is one of the many ways that energy travels through space. The heat from a burning fire, the light from the sun, the X-rays used by your doctor, as well as the energy used to cook food in a microwave are all forms of electromagnetic radiation. While these forms of energy might seem quite different from one another, they are related in that they all exhibit wavelike properties.
How many moles of gas are in a 34.2 L container at 1 atm of pressure and 123℉?
How many moles of gas are in a 22.4 L container at 1 atm of pressure and 89℃?
How many moles of gas are in a 16.7 L container at 1 atm of pressure and 273.15 K?
Answer:
1.29 moles
0.753 moles
0.745 moles
Explanation:
PV=nRT
n=PV/RT
n=(1)(34.2)/(0.0821)(323.7)
n=1.29
n=PV/RT
n=(1)(22.4)=(0.0821)(362.15)
n=0.753
n=PV/RT
n=(1)(16.7)/(0.0821)(273.15)
n=0.745
In the ideal gas equation, T is measured in Kelvin.
The period of a wave is 20 ms (milliseconds) and its wavelength is 4 cm. Calculate:
a) The frequency of the wave
b) The velocity of the wave.
Answer:
A. 50 Hz
B. 2 m/s
Explanation:
We'll begin by converting 20 ms to s. This can be obtained as follow:
1000 ms = 1 s
Therefore,
20 ms = 20 ms × 1 s / 1000 ms
20 ms = 0.02 s
Next, we shall convert the value of the wavelength (i.e 4cm) to m. This can be obtained as follow:
100 cm = 1 m
Therefore,
4 cm = 4 cm × 1 m / 100 cm
4 cm = 0.04 m
A. Determination of the frequency.
Period (T) = 0.02 s
Frequency (f) =?
f = 1 / T
f = 1 / 0.02
f = 50 Hz
Therefore, the frequency of the wave is 50 Hz
B. Determination of the velocity.
Wavelength (λ) = 0.04 m
Frequency (f) = 50 Hz
Velocity (v) =?
v = λf
V = 0.04 × 50
v = 2 m/s
Therefore, the velocity of the wave is 2 m/s
Explain what superconductivity is and how it was discovered.
Answer:
Superconductivity is a phenomenon whereby a charge moves through a material without resistance. In theory this allows electrical energy to be transferred between two points with perfect efficiency, losing nothing to heat it was discovered on April 8, 1911 by Heike Kamerlingh Onnes, who was studying the resistance of solid mercury at cryogenic temperatures using the recently produced liquid helium as a refrigerant. At the temperature of 4.2 K, he observed that the resistance abruptly disappeared.
Explanation:
yeah
The rate at which VELOCITY changes over time is known as ________________________ 1pt
Acceleration.
Acceleration is the time rate o change of velocity
what's Quantum Mechanics?
Answer:
The branch of mechanics deals with the mathematical description of the motion and interaction of subatomic particles, incorporating the concepts of quantization of energy, wave–particle duality, the uncertainty principle, and the correspondence principle is Quantum Mechanics.
Answer:
Explanation:
Quantum Mechanics is a branch of physics that deals with sub-atomic particles and their energy states. Its theory says at subatomic level, energy exists in discrete levels as "quanta" and particles behave as waves.
10.
Planets that are more than 1 AU from earth include:
a. Mercury, Mars, Pluto, Saturn
b. Mercury, Venus, Earth, Mars
C. Earth, Mars, Jupiter, Saturn, Uranus, Neptune
d. Jupiter, Saturn, Uranus, Neptune
Answer:
C
Explanation:
Earth Mars Jupiter Saturn,Uranus, naptune
The flooding of the Mississippi River
A) is always going to produce negative effects
B) deposits fertile soil in the Mississippi Delta.
C) deposits fertile soil in the western part of the state.
D) is responsible for the formation of the Mississippi Delta.
Hint: Rivers are agents of erision.
If a car is traveling on a highway and arrives at its destination 56 miles away after 4 hours, what is its speed?
Answer:
14 miles per hour
Explanation:
You have to divide 56 miles by four hours to get 14 miles per hour
If you increase the amount of spinach you eat, then you will increase the iron in your blood. What's the dependent variable?
The quantity of iron in your blood is the dependent variable because it is influenced by how much spinach you consume. The amount of spinach you consume will act as the independent variable because it doesn't require iron in any way.
What is the dependent variable?A dependent variable is one whose values can be determined by testing in a scientific experiment. It is clear that the dependent variable depends on the independent variable. While a result, we can now see and note changes in the dependent variable as the experimenter modifies the independent variable.
Given:
Increase the amount of spinach you eat, then you will increase the iron in your blood,
Write the equation for the above phrase as shown below,
The amount of iron = variable × the amount of spinach
y = ax
here, y is The amount of iron and x is the amount of spinach
Thus, the dependent variable is the quantity of iron.
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What is one problem that you think needs to be solved so that your future is safer for your children?
Answer:
Systemic racism
Explanation:
In which atmospheric temperature zone does most precipitation occur?
a. troposphere
b. thermosphere
c. stratosphere
d. mesosphere
Which of the following is not an accurate measurement of mass?
O grams
0 kilograms
O pounds
0 kilometer
An incline plane is 12-m long and 4-m high. A block is pulled up the ramp with a spring scale. The reading on the spring scale is 70-N. How many Newtons would the block actually weigh if you had to lift it the 4-m height?
Answer:
W = 210 N
Explanation:
For an ideal machine:
[tex]Work\ In = Work\ Out\\(P)(L)=(W)(H)[/tex]
where,
P = Effort = Spring Scale Reading = 70 N
L = Effort Arm = Length of inclined plane = 12 m
W = Actual Load (Weight) to be lifted = ?
H = Load Arm = Height = 4 m
Therefore,
[tex](70\ N)(12\ m) = (W)(4\ m)\\\\W = \frac{(70\ N)(12\ m)}{4\ m}[/tex]
W = 210 N
Which of the following characteristics of the earth are essential to the existence of life?
Answer: What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
Explanation:
Which statement describes an example of destructive interference?
A. Light shining on a DVD surface produces different colors.
B. Light shining on a surface has gaps after passing through two
slits.
C. A lamp lights an area around a corner.
D. The inside of a seashell appears to be many different colors.
Answer:
B. Light shining on a surface has gaps after passing through two
slits.
Explanation:
Destructive interference is said to occur when two waves cancel out each other. The occurrence of this phenomenon implies that the waves have equal amplitude in opposite directions.
When light shinning on a surface has two gaps after passing through two slits, then the waves have interfered destructively which led to the gaps.
A central air conditioner in a typical American home operates on a 220-V circuit and draws about 15 A
of current
a. Determine the power rating of such an air conditioner.
b. Determine the energy consumed (in kW.hr) if operated for 8 hours per day.
c. Determine the monthly cost (31 days) if the utility company charges 13 cents per kW.hr.
Answer:
Find answers below.
Explanation:
Given the following data;
Voltage = 220V
Current = 15 A
a. To find the power;
Power = current * voltage
Power = 15 * 220
Power = 3300 Watts
b. To find the energy;
Time = 8 hours = 60 * 60 * 8 = 28800 seconds
Energy = power * time
Energy = 3300 * 8
Energy = 26400
Energy = 26.4 Kwh
c. Cost = 13 cents
Cost = 13 * 31 * 26.4
Cost = 106392 cents
a teacher lifted a 10 N box and placed it down. Did she do any work? Explain your answer using math
Answer:
i think it is 45 kilograms not really sure?
Explanation:it might be wrong but i think it is right
How much of the human body is composed of proteins
Answer:
Protein makes up approximately 20 percent of the human body and is present in every single cell
Explanation:
Answer:
Protein makes up approximately 20 percent of the human body and is present in every single cell.
how do atoms relate to the periodic table?
Answer:
The organization of electrons in atoms explains not only the shape of the periodic table but also the fact that elements in the same column of the periodic table have similar chemistry. The same concept applies to the other columns of the periodic table.
Which of the following is always true about the particles that make up matter? A. They can only be found in solid substances. B. They are too small to be seen with only our eyes. C. They are the same size in all substances, D. They are locked into regular arrangements.
Answer:
I am thinking D. correct me if I am wrong
Which of the following football players have the same momentum?
Ted: mass = 60 kg, velocity = 2.0 m/s
Todd: mass = 80 kg, velocity = 1.7 m/s
Tom: mass = 90 kg, velocity = 1.5 m/s
Tim: mass = 100 kg, velocity = 1.2 m/s
a. Ted and Todd
b. Todd and Tim
c. Ted and Tim
d. None of the above.
Answer: Ted and Tim
Explanation:
The football players Ted and Tim have the same momentum, which is 120 kg m/s. Hence, option C is correct.
What is momentum?The momentum is the result of a particle's velocity and mass. Force and motion, meaning it has both magnitude and direction. According to Isaac Newton's second equation of motion, the force acting on a particle equals the time rate of increase of momentum.
The impulse, which is the product of the force and the intervals (the impulse), is equal to the difference in momentum, according to Newton's 2nd law, if a steady force operates on a particle for a specific amount of time. On the other hand, a particle's momentum is the amount of time needed for a consistent action to fight it to rest.
As per the given information in the question,
The momentum of Ted is,
p = 60 × 2 = 120 kg m/s
The momentum for Todd is,
p = 80 × 1.7 = 136 kg m/s.
The momentum of Tom is,
p = 90 × 1.5 = 135 kg m/s and,
The momentum for Tim is,
p = 100 × 1.2
p = 120 kg m/s.
After comparing the momentum of all the players, Ted and Tim have similar momentum.
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Two 0.5 kg carts,one red and one green ,sits about half a meter apart on a low friction track. You push on the red with a constant force of 4N for 0.17m and then remove your hand. The cart moves 0.33 m on the track and then strikes the green cart. What is the work done by you on the two cart system?
Answer:
Work done on the two cart system is 2 N-m
Explanation:
Work done is equal to the product of force and displacement
Work done =4N * (0.17 +0.33)
work done = 4N * 0.5
Work done = 2 N -m
Work done on the two cart system is 2 N-m
The heart working with the blood vessels to pump blood is which body system?
Digestive
Nervous
Respiratory
Cardiovascular
