Answers
The first diagram is a blackbody radiation curve that shows that an increase in wavelength results in a decrease in the intensity of radiation
The second diagram is of stars showing the shift from red to blue color as the temperature of the stars increases.
The third diagram shows that the brightness of stars increases with an increase in temperature.
What are stars?Stars are massive, luminous celestial objects composed of hot gases, primarily hydrogen and helium held together by their own gravity and generate energy through nuclear fusion reactions in their cores.
Stars vary in size from small relatively cool stars known as red dwarfs to massive, hot stars called blue giants. They exist in a wide range of colors, luminosities, and temperatures, which are determined by their mass, age, and stage of evolution.
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Related Questions
. .. . . . . .. . . . . .. . . . . . . ..
Answers
………..no questions
where the questions?
provide 2 important pitching tips you can tell someone else. softball
Answers
Tip 1 - throwing a fastball. Use two points to keep your arm properly aligned your biceps brush your ear at the top of the backswing, and your pitching hand brushes your hip at release.
Tip 2 - throwing a curveball. Pictures should know that in order to maximize your curves, you should visualize a series of dots from the mound to the outside corner of the plate. Pitch along those dots.
Tip 3 - throwing a fast pitch rise. It’s possible that your wrist snap may be sideways. Play with different grips or finger pressures and try to relax them.
Tip 4 - throwing a change-up. Don’t always throw the change-up in a given situation. Make sure to change your pitch selection.
Tip 5 - throwing a drop-ball. Keep your pitching arm close to your body to avoid injury.
an object is placed at dist 25cm in front of concave mirror and image has magnification of -2 .find focal length
Answers
Answer:
Given,
Object distance, u=25cm
Focal length, f=20cm
From mirror formula
f
1
=
v
1
+
u
1
−20
1
=
v
1
−
25
1
⇒
v
1
=−
20
1
+
25
1
v=100cm
The image will be real, inverted magnified
Explanation:
Given,
Object distance, u=25cm
Focal length, f=20cm
From mirror formula
f
1
=
v
1
+
u
1
−20
1
=
v
1
−
25
1
⇒
v
1
=−
20
1
+
25
1
v=100cm
The image will be real, inverted magnified
Tamika is babysitting and wants to make jello with the kids. She has to heat the water before adding the jello mix, If she heats the mixture to 50°C, how do the molecules move? Select ALL that apply. 2 A. The hotter molecules move faster than the colder molecules. B. The hotter molecules move towards the surface of the mixture. C. The hotter molecules move towards the bottom of the mixture. D. The hotter molecules move slower than the colder molecules. E. The colder molecules move towards the surface of the mixture. E. The colder molecules move towards the bottom of the mixture.
Answers
Explanation:
what is the answer
A truck travels down the highway at a speed of 100 km/hr. how long does the trip last if the truck covered 2200km?
Answers
Answer:
20 hours
Explanation:
if the truck travels 110 miles in one hours, 110 times 20 equals 2,200.
another way is- 2,200 divided by 110 = 20 hours.
(Forensic Science)
Officer Piddington has been called to a murder scene. He arrives to find EMTs tending to the victim lying on the living room floor with a large knife protruding from his sternum. It is clear that this is where the crime occurred, and Officer Piddington does not see any evidence of dangerous chemicals on site. He secures the area and then begins to document the scene. What is one of the first things that Officer Piddington records in his notes about the crime scene?
The victim's past criminal history
A description of the crime scene when he arrived
The estimated time of death of the victim
A list of possible suspects involved in the crime
Answers
Answer:
The answer is B
Explanation:
The detective begins his/her documentation of the crime scene by writing down the date, time, and location of the crime scene. this is always important to start the report with so that any who reads the notes know when and wher this all happened before reading about evidence other wise the reader could be confused and pass evidence off as faulty.
Answer:
A description of the crime scene when he arrived
Explanation:
what physical education objectives might be accomplished in public and private sector physical education and sport programs?
Answers
Physical education objectives that may be accomplished in public and private sector physical education and sports programs include improving overall physical fitness and health, promoting teamwork and sportsmanship, developing motor skills and coordination, and fostering a lifelong love of physical activity.
These programs can help enhance cognitive and academic performance, build self-confidence and self-esteem, and instill values. Both public and private sector programs can provide access to a wide range of physical activities and sports, including individual and team sports, outdoor recreation, and fitness and wellness programs. The ultimate goal of these programs is to promote a healthy and active lifestyle among participants.
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A 10.0 kg bowling ball is moving at 10 m/s when it strikes a 20 kg bowling pin. After the collision,
the pin moves forward at 15 m/s. How fast is the ball moving after it hits the pin?
Answers
Answer: 20 m/s
Explanation:
Given
mass of bowling ball m=10 kg
Mass of bowling pin M=20 kg
The initial velocity of ball u=10 m/s
The velocity of the pin after collision \(v_2=15\ m/s\)
Conserving linear momentum as there is no external force applied
\(mu=mv_1+Mv_2\quad \quad (v_1=\text{velocity of ball after collision})\)
\(10\times10=10\times v_1+20\times15\\10v_1=100-300\\v_1=-20\ m/s\)
i.e. ball started moving in the direction opposite of its initial direction with a velocity of 20 m/s
The ball moves backwards with a velocity of -20m/s
The data given are;
m\(_1\) = 10kgm\(_2\) = 20kgu\(_1\) = 10m/sv\(_1\) = ?v\(_2\) = 15m/sLaw of conservation of linear momentumThis law states that assuming no external forces are acting, when two bodies collide together, the sum of their initial momentum remains constant and it's not changed by their collision.
Applying the law of conservation of linear momentum
\(m_1u_1+m_2u_2=m_1v_1+m_2v_2\\(10*10) + (20*0) = (10*v_1)+(20*15)\\100+0=10v_1+300\)
collect like terms
\(100=10v_1+300\\100-300=10v_1\\-200=10v_1\\v_1=\frac{-200}{10}\\v_1=-20m/s\)
This shows that the balls moves backwards hence the reason why it have a negative velocity.
From the calculation above, the ball moves backwards with a velocity of -20m/s.
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Which of the following statements is true based on the law of conservation
of mass?
A. The weight of a crushed cookie is less than the weight of a whole cookie.
B. A mixture weighs the same as the weight of all the parts of the mixture.
C. The ingredients in a salad weigh more than the salad as a whole.
D. A frozen ice pop weighs more than a melted ice pop.
Answers
Answer:
B
Explanation:
The mass of something before it's been processed is the same as it's mass after the process.
According to law of conservation of mass,mixture weighs the same as the weight of all parts of the mixture.
What is law of conservation of mass?According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .
Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.
Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789. According to this law, mass of reactants is always equal to the product.
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A solution which has a solid solute is saturated at 25°C. It is then heated to 35°C. There is no change in the appearance of the solution. What term would now be associated with this solution?
A.
unsaturated
B.
saturated
C.
oversaturated
D.
supersaturated
Answers
Answer:
C. oversaturated
Explanation:
Sana nakatulong
Which form of energy is converted to electrical energy in a voltaic cell?.
Answers
Answer:
chemical energy is converted to electrical energy in a voltaic cell.
If you know that the period of a pendulum is 1.87 seconds, what is the length of that pendulum? (assume that we are on earth and that gravity is 9.81 meters/second². ) a. 0.87 centimeters b. 2.1 meters c. 1.6 meters d. 0.87 meters e. 8.3 meters
Answers
Answer:
d. 0.87 meters
Explanation:
You want to know the length of a pendulum whose period is 1.87 seconds.
PeriodThe formula for the period of a pendulum in terms of its length is ...
T = 2π√(L/g)
LengthSolving for length, we have ...
T/(2π) = √(L/g) . . . . . . . divide by 2π
(T/(2π))² = L/g . . . . . . . square both sides
gT²/(4π²) = L . . . . . . . multiply by g
For the given period and value of g, we find the length to be ...
L = 9.81·(1.87/π)²/4 ≈ 0.87 . . . . meters
The length of the pendulum is about 0.87 meters.
Answer: d. 0.87 meters
Explanation: plato :)
What is the surface area if the shape?
Answers
Explanation:
Fourteen yard (14) yard
Which equation is used to
calculate the atomic mass of an
atom?
Answers
Answer:
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
Bob runs up the stairs in 2.54 sec and generates 800 watts of power. joe, with twice the mass, runs up the stairs and generates the same amount of power. how many seconds does it take joe?
Answers
With twice the mass, and generates the same amount of power, Joe would take approximately 3.19 seconds to run up the stairs.
The power generated by an individual is equal to the work done divided by the time taken. In this scenario, Bob generates 800 watts of power and takes 2.54 seconds to run up the stairs. To find out how long it would take Joe, who has twice the mass of Bob, we can use the principle of conservation of mechanical energy.
Since both Bob and Joe generate the same amount of power, we can assume that they perform the same amount of work. As work is equal to force multiplied by distance, and the stairs' height remains the same, the force required to climb the stairs is also the same for both individuals.
According to the principle of conservation of mechanical energy, the change in gravitational potential energy is equal to the work done. Since the height and the force are constant, the only variable that changes is the mass.
Since Joe has twice the mass of Bob, he requires twice the force to climb the stairs. This means Joe would take approximately the square root of 2 (approximately 1.41) times longer to complete the task. Therefore, if Bob takes 2.54 seconds, Joe would take approximately 3.19 seconds to run up the stairs.
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in a railyard a train is being put together from freight cars.An empty freight car coasting 10 m/s strikes a loaded car that is stationary and the cars couple together. Each of the cars Haas a mass of 3000kg when empty and the loaded car contains 12000kg of canned soda . with what speed does the combination of the two cars start to move?
Answers
Answer:m1v1 + m2v2 = (m1f + m2f)vf. 3000kg(10.0m/s) + (15000kg)(0.0m/s) = (18000kg)(vf).
Explanation:
The fatty layer contains many nerves and blood vessels. True or False
Answers
Answer:
False , The fatty layer do not contains many nerves and blood vessels. The fatty layer is related to skin layers.
Explanation:
The fatty layer is the most under a layer of skin. It made up of a system of collagen and fat cells. It helps maintain the body's temperature and shields the body from harm by serving as a shock absorber.
The dermis is the central layer of the skin. The dermis is maintained collectively by a protein termed collagen. This layer gives skin elasticity and power. The dermis also holds shock and feel receptors.
A force of 10 lb is required to hold a spring stretched 2 in. beyond its natural length. How much work W is done in stretching it from its natural length to 7 in. beyond its natural length? W X ft-lb
Answers
The work done in stretching the spring from its natural length to 7 inches beyond its natural length is 112.5 ft-lb.
We are given a spring which is stretched beyond its natural length by 2 inches, by applying a force of 10 pounds.
We have to calculate the work done in stretching it further to 7 inches beyond its natural length, in ft-lb.
In order to calculate the work done, we need to know the spring constant (k) of the spring and then use the formula for work done by a spring, which is given by
W = (1/2)k(x2² - x1²)
Where, W is the work done, k is the spring constant, x1 is the initial position of the spring, and x2 is the final position of the spring.So, we need to find the spring constant k of the spring, in order to calculate the work done.Let the spring constant be k lb/inch.
We know that F = kx
where, F is the force applied, x is the displacement, and k is the spring constant.
Substituting the values, we get10 = k(2)k = 5 lb/inch.
Now, we can use the formula for work done, which is W = (1/2)k(x2² - x1²)
Substituting the values, we get W = (1/2)(5)(7² - 2²)W = (1/2)(5)(45)W = 112.5 ft-lb.
Therefore, the work done in stretching the spring from its natural length to 7 inches beyond its natural length is 112.5 ft-lb.
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Help me out i geuss ill do the other page myself if someone explains it
Answers
Answer:
I think firs one is 30
second one is 4
third one is 12
I am not sure about my answers.
What are two uses of total internal reflection? (GCSE Physics)
Answers
Answer:
1) Used in optical instruments such as telescopes.
2) Used to form mirages
Explanation:
1) Perhaps the simplest example of this is the astronomical refractor telescope with a right-angle eyepiece holder. Astro scopes mostly point at things high in the sky, but it is inconvenient to place your eye low to look up through the scope, so the light path is bent 90 degrees just before the eyepiece. This can be done with a mirror, but using a simple 45 degree prism (internal angles 45, 45, and 90 degrees) will do the 90 degree bend more efficiently.
2) So when a light pass from cold air to hot air light tends to bend from its path which is known as refraction. As the light get refracted it reaches to a point where the light tends to form 90 degree angle.
How many millimeters of water can dissolve 5g of lead nitrate
Answers
The solubility of lead nitrate is 52 grams per 100 milliliters of water at 0°C. Since the question does not specify the temperature, we will assume it is 0°C.To calculate the number of millimeters of water required to dissolve 5 g of lead nitrate,
we must first calculate the number of milliliters of water required to dissolve 5 g of lead nitrate.52 grams of lead nitrate can dissolve in 100 milliliters of water. So,5 g of lead nitrate can dissolve in x milliliters of water.= (5 g / 52 g) × 100 mL= 9.6 mLTherefore, 5 g of lead nitrate can dissolve in 9.6 mL of water. However, the question is asking for the number of millimeters of water, not milliliters. Since 1 milliliter of water weighs 1 gram,9.6 milliliters of water will weigh 9.6 grams.Thus, 5 g of lead nitrate can dissolve in 9.6 millimeters of water.
main answer:5 g of lead nitrate can dissolve in 9.6 millimeters of water. :52 grams of lead nitrate can dissolve in 100 milliliters of water. So, 5 g of lead nitrate can dissolve in x milliliters of water.= (5 g / 52 g) × 100 mL= 9.6 mLTherefore, 5 g of lead nitrate can dissolve in 9.6 mL of water. However, the question is asking for the number of millimeters of water, not milliliters. Since 1 milliliter of water weighs 1 gram,9.6 milliliters of water will weigh 9.6 grams.Thus, 5 g of lead nitrate can dissolve in 9.6 millimeters of water.
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The refractive index of medium ‘X’ with respect to medium ‘Y’ is 2/3 and
refractive index of medium ‘Y’ with respect to medium ‘Z’ is 4/3. Find the refractive
index of medium ‘Z’ with respect to medium ‘X’.
Answers
To find the refractive index of medium 'Z' with respect to medium 'X' (n(Z/X)), we can use the formula:
n(Z/X) = n(Z/Y) * n(Y/X)
Given:
n(X/Y) = 2/3
n(Y/Z) = 4/3
Plugging these values into the formula, we get:
n(Z/X) = (4/3) * (2/3)
To simplify the expression, we multiply the numerators and denominators:
n(Z/X) = (4 * 2) / (3 * 3)
= 8 / 9
Therefore, the refractive index of medium 'Z' with respect to medium 'X' is 8/9.
Onsidering light at the two ends of the visible light spectrum, violet light has a _____ wavelength and a _____ photon energy than red light
Answers
Considering light at the two ends of the visible light spectrum, violet light has a shortest wavelength and a highest photon energy than red light
In visible light spectrum wavelength of violet light is 380 nm to 450 nm whereas wavelength of red light is 620 nm to 750 nm.
The increasing order of visible light spectrum i.e. VIBGYOR is Violet > Indigo > Blue > Green > Yellow > Orange > Red .
When we discuss about the photon energy of Violet Light, it is 2.85 ev to 3.26 ev and the photon energy of Red Light is 1.65 ev to 2.00 ev
V- Violet- shortest wavelength with highest energy
R- Red- highest wavelength with minimum energy
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An arrow shot vertically upwards at a speed of 40m/s, hit the target after 2s. How high is the target? How fast did the arrow hit the target?
Answers
Answer:
Explanation:
kinematics
d=V1*t + 1/2* a * \(t^{2}\)
plug in your knowns into the above equation
d=40*2+1/2*(-9.8)*\(2^{2}\)
60.4m
Vf = Vi+ a*t
Vf = 40 + (-9.8)*2
Vf = 20.4 m/s
what material would you use to build countertops
Answers
Answer: Natural stone
Explanation:
Answer:
Natural stone
Explanation:
The most common natural stones used to make countertops include granite, marble, soapstone, and slate.
VOTING BRAINLIEST FOR ANYONE WHO ANSWERS RIGHT!!
PLS HELP
Answers
Answer:
B
Explanation:
-1 e so the atomic number should increase so,
B. Np
12) Driving home from school one day, you spot a ball rolling out into the street (FIGURE 5-27). You brake for 1.20 s, slowing your 950-kg car from 16.0 m>s to 9.50 m>s. What was the average forceexerted on your car during braking and How far did you travel while braking?
Answers
We are given the following information
Mass of car = 950 kg
Initial speed of car = 16.0 m/s
Final speed of car = 9.50 m/s
Time = 1.20 s
The average force exerted on the car during braking can be found using Newton's 2nd law of motion
\(F=m\cdot a\)Where m is the mass of the car and a is the acceleration of the car.
The acceleration of the car is given by
\(\begin{gathered} a=\frac{v_f-v_i}{t} \\ a=\frac{9.50-16.0}{1.20} \\ a=-5.4167\; \; \frac{m}{s^2} \end{gathered}\)The negative sign indicates deacceleration since the car is stopping.
So, the force is
\(\begin{gathered} F=m\cdot a \\ F=950\cdot5.4167 \\ F=5145.865\; \; N \end{gathered}\)Therefore, an average force of 5145.865 N was exerted on your car during braking.
The distance traveled by the car while braking can be found as
\(s=v_i\cdot t+\frac{1}{2}\cdot a\cdot t^2\)Let us substitute the given values
\(\begin{gathered} s=16.0\cdot1.20+\frac{1}{2}\cdot(-5.4167)\cdot(1.20)^2 \\ s=19.20-3.90 \\ s=15.3\; m \end{gathered}\)Therefore, the car traveled a distance of 15.3 m while braking.
um can someone please help me I'm really stuck on this question and an explanation would be nice thank you
Answers
Answer: A wavelength is how long ONE wave is. First divide the distance of the whole diagram by the number of waves. you will get 2m. This is the answer.
Orginize it
What category would these go in??
Categorys : Radiation, conduction, and convection
Answers
- The sun’s radiation (no direct contact) is what causes the skin to burn.
Radiation: Microwave cooking food
- Microwaves use radiation to heat the food inside of it; between radio waves and infrared radiation on the electromagnetic spectrum
Conduction: Touching a hot car seat in the summer
- Conduction is the transfer of heat by direct contact (hand to seat).
Conduction: Burning yourself with a curling iron (Similar to above; direct contact).
Convection: An ocean breeze
- Convection near coastlines cause the transfer of energy; water warms and cools slower than land.
Conduction: Sliding down a hot metal slide in august
- You are in direct contact with the slide, which is hot due to the temperature.
Convection: Water in a boiling pot of macaroni
- The water, a liquid, is being heated by molecular motion.
Convection: Currents deep within the earth that cause tectonic plates to move
- Convection currents drive the movement of tectonic plates in the mantle, which is fluid/molten. The currents circulate under the asthenosphere.
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