Answer:
The correct option is (c).
Explanation:
Given that,
The energy of a photon is, [tex]E=3.38\times 10^{-19}\ J[/tex]
We need to tell the color of this light. We know that, the energy of a photon is given by :
[tex]E=\dfrac{hc}{\lambda}[/tex]
Where
c is the speed of light
[tex]\lambda=\dfrac{hc}{E}\\\\\lambda=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{3.38 \times 10^{-19}}\\\\\lambda=5.88\times 10^{-7}\ m\\\\\lambda=588\ nm[/tex]
The wavelength of yellow light is approx 580 nm. Hence, we can say that this photon corresponds to yellow light.
Answer:
B. Green
Explanation:
correct on EDGE2021
What is meant by the phrase "a consistent method of measurement"?
A. All measurements are in SI units.
B. Every measurement is exactly the same numerical value.
C. The same person performs all measurements.
D. Measurements are taken in a way that is the same every time.
Answer:
D. Measurements are taken in a way that is the same every time
Explanation: I took the quiz and got it right.
Which object is in static equilibrium?
Answer:
I believe it's C. a book that has no net force acting on it and is sitting on a table.
A treasure map directs you to start at palm tree
and walk due north for 15.0 m. You are then to turn
90° and walk 22.0 m; then turn 90° again and
walk 5.00 m.
Give the distance from the palm tree,and the direction to north, for each of the four possible locations of the treasure .
The direction of the 90° turns are the possible directions used for the calculations
The four distances and directions are;
24.2 m, 65.6° West of North29.7 m, 42.7° East of North24.2 m, 65.6° East of North29.7m, 47.7° West of NorthReason:
Let point A represent the motion of the treasure hunter, we have:
Turning West then West;
Walking due north to location (0, 15)
Turn 90° West and walk 22.0 m to the location (-22, 15)
Turn 90° West again and walk 5.00 m. to the location (-22, 10)
The location of point A = (-22, 10)
[tex]Direction \ of \ point \ A = arctan \left(\dfrac{10}{-22} \right) \approx -24.4^{\circ}[/tex]
Direction to North = 90° - 24.4° ≈ 65.6°
Distance = √((-22)² + 10²) ≈ 24.2
Therefore, we have;
24.2 m, 65.6° West of NorthTurning East then West:
Turn 90° East and walk 22.0 m to the location (22, 15)
Turn 90° West again and walk 5.00 m. to the location (22, 20)
The location of point A = (22, 20)
[tex]Direction \ of \ point \ A = arctan \left(\dfrac{20}{22} \right) \approx 42.7^{\circ}[/tex]
Direction to North = 90° - 42.3° ≈ 47.7° East
Distance = √((-22)² + 20²) ≈ 29.7
Therefore, we have;
29.7 m, 42.7° East of NorthTurning East then East:
Turn 90° East and walk 22.0 m to the location (22, 15)
Turn 90° East again and walk 5.00 m. to the location (22, 10)
The location of point A = (22, 10)
[tex]Direction \ of \ point \ A = arctan \left(\dfrac{10}{22} \right) \approx 24.4^{\circ}[/tex]
Direction to North = 90° - 24.4° ≈ 65.6° East
Distance = √((-22)² + 10²) ≈ 24.2
Therefore, we have;
24.2 m, 65.6° East of NorthTurning West then East:
Turn 90° West and walk 22.0 m to the location (-22, 15)
Turn 90° East and walk 5.00 m. to the location (-22, 20)
The location of point A = (-22, 20)
[tex]Direction \ of \ point \ A = arctan \left(\dfrac{20}{-22} \right) \approx -42.7^{\circ}[/tex]
Direction to North = 90° - 42.7° ≈ 47.7° West
Distance = √((-22)² + 20²) ≈ 29.7
Therefore, we have;
29.7m, 47.7° West of NorthLearn more here:
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a bus starts to move from rest . if its velocity becomes 90km/per hour after 8s. calculate its acceration .
its answers is : 3.13ms-2
Answer:
3.13m/s²
Explanation:
first convert from KM to M, 1km-1000m then convert from km/h to m/s (speed)90×1000/3600 note: 1h- 3600s
=25m/s
a=v/t
a= 25m/s ÷ 8s
a= 3.125 / 3.13m/s²
Cosmic abundance is made up primarily of what gases?
Answer:
Hydrogen and Helium
Explanation:
The abundance of chemical elements in the universe was made up of large amounts of these 2 gases, the rest made up only about 2% of the universe. Which were produced mostly by supernovae and certain red giant stars
What happens when you sit in a
chair?
A. Gravity is pulling you down but the chair
pushes you up with equal force.
B. Gravity is pulling you down and the chair
pushes you up into the air.
C. There is no force being exerted.
D. Gravity is pulling you down and the chair is
sliding sideways.
Answer:
B
Explanation:
that is the only way you can sit
a box has a length of .5 m and a width of .1m. if the box exerts a force of 10 N on the floor, what is the pressure of the box on the floor
Answer:
The pressure of the box on the floor is 200 Pa
Explanation:
Given,
Length of the box=0.5m
Width of the box= 0.1m
∴Area of the box, A= (0.5 X 0.1) sq.m
= 0.05 sq.m
We know,
Pressure, P= F/A
= 10/0.05 Pa
= 200 Pa
∴The pressure of the box on the floor is 200 Pa
the speed of an object increases by 30 m/s in 10 seconds. what is its acceleration?
Answer:
3m/s^2
Explanation:
acceleration=velocity/time
acceleration= 30/10=3m/s^2
Infrequent urination, dry skin, and dizziness are all symptoms of
Answer:
Dehydration
Explanation:
Please help with number 24
Answer:
I think its false cause with a slope you have acceleration
What is the average velocity of a car traveling South on a straight road for two hours returns to the starting point after three hours.
The average velocity of the car traveling south and later returned to the starting point is 0.
Average velocity is defined as the change in displacement per change in the time of motion.
Average velocity is calculated as follows;
[tex]v = \frac{\Delta x}{\Delta t} = \frac{x_2 - x_1}{t}[/tex]
Let the initial displacement of the car, x₁ = 20 m
Let the final displacement of the car, x₂ = 20 m (since the car returned to the starting point).
The average velocity is calculated as;
[tex]v = \frac{x_2 - x_1}{t} = \frac{20 - 20}{5} = 0[/tex]
Thus, the average velocity of the car traveling south and later returned to the starting point is 0.
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if human beings ever travel to a planet whose mass and radius are both twice that of the earth, their weight on that planet will be
Please write and solve this question in five sentences or more
Answer:
m
Explanation:
hjvb,nbvhgjhghjmn,
an audi car advertisement states its car can accelerate from a starting velocity of rest to an ending velocity of 70m/s in 35 seconds. what is the car acceleration?
Answer:
279 m/s
Explanation:
Answer:
2m/s^2
Explanation:
A=(u-v)/t
where u=final velocity and v=initial velocity and t=time
therefore u =70 and v=0 because the question said velocity of rest and finally t=35
so, (70-0)/35= 70/35=2
Treating the International Space Station as a point mass, what is the gravitational potential
30 m from the centre? M= 419 000 kg.
Answer:
Ep=mgh
Ep=419000×9.8×30
Ep=123,186,000 J
the gravitational potential energy is 123 186 000 joules
Why does it sound different when tapping on an aluminum spoon with an aluminum spoon when tapping on an iron jar?
Answer:
When the different objects drop on floor then each object vibrate at its natural frequency and produce different sound.
Explanation:
Conclusion: Thus different object has different vibration frequency and when they dropped on floor each vibrate at its natural frequency and produce different sound.
If you throw a ball into the air, Earth exerts a force on the ball. The ball in the air exerts no force.
Answer:
If an unbalanced force is acting on a rope, the rope will accelerate In The Direction Of The Unbalanced Force. The speed you read on your speedometer is the Constant speed.
Explanation:
did it on edge
Put the levels of organization of an ecosystem in order from smallest (1) to largest (4).
community
ecosystem
organism
population
Answer:
3
community
4
ecosystem
1
organism
2
population
Explanation:
i did it other guy worng
The leaves of plants contain specialized parts that absorb energy from sunlight. Which feature would help a plant better compete for sunlight?
leaves that change color
colorful flowers
larger overall leaf size
a shorter stem
Answer:
In most plants, the leaves are the main food factories. They capture the sun's energy with the help of chlorophyll in the leaf cells. The chlorophyll traps and packages the energy from the light of the sun in a process called photosynthesis. Leaves usually have a large surface so they can collect the most sunlight.
Explanation:
Hope this helps...maybe
Answer:
C
Explanation:
I NEED HELP I AM SO CONFUSED, WILL GIVE BRAIN.
A man is on a 30m cliff and throws a ball down with a speed of 7 m/s.
A) With what velocity does the ball hit the ground? B) How high above the ground is the ball after the ball has fallen for 1 second?
Answer:
210
Explanation:
A ball rolls horizontally off the cliff at a speed of 30 m/s. It takes 7 seconds for the ball to hit the ground. What is the height of the cliff and the horizontal distance traveled by the ball?
S = (1/2)*9.8 m/s^2 * 7^2 = 240.1 m if the ball is very dense so air resistance, and therefore terminal velocity, can be ignored.
S = v * t = 30 m/s * 7 s = 210 m for the horizontal distance, again assuming negligible air resistance.
Height above the ground is the ball after the ball has fallen for 1 second is 210 m.
What is speed?The speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.
A ball rolls horizontally off the cliff at a speed of 30 m/s. It takes 7 seconds for the ball to hit the ground.
S = (1/2)*9.8 m/s² * 7² = 240.1 m if the ball is very dense so air resistance, and therefore terminal velocity, can be ignored.
S = v * t = 30 m/s * 7 s = 210 m for the horizontal distance, again assuming negligible air resistance.
Height above the ground is the ball after the ball has fallen for 1 second is 210 m.
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Can anyone Hele please I don't know how to convert the light years in order to get an equation like the one on Alpha Centauri in the picture, but I do know how to log it.
Answer:
Log 10 ( 4.16x10^16)
Explanation:
Other distance from sun you have to search by your self then apply the equation Log 10 ( distance from sun )
why do some science classes teach that electrons, comparatively, have no mass?
helpppp ASAPPP
Answer:
An electron's mass is only 1/1,836 the mass of a proton. An electron is therefore considered nearly massless in comparison with a proton or a neutron.
1. A race car accelerates uniformly from 19.5 m/s to 50.1 m/s in
2.47 seconds. Determine the acceleration of the car.
The acceleration of the car is 79.8.
Answer:
12.39m/s²
Explanation:
use the formula a=v-u
t
Oh a sqiurrel’s hidden nuts, for every 5 that get found, there are 3 that to not get found. A squirrel hid 40 nuts all together. How many of the nuts do not get found?
Answer:
66 2/3
Explanation:
two sports where it would be good to have long thin bones , explain your answer
Answer:
Well, I know basketball is one. Also, Track and Field and tennis
If a metal has a mass of 78.2 g and a volume of 11.4 mL, what is its density?
Answer:
6.86g/mL
Explanation:
The density of the metal would be approximately 6.859 grams per milliliter (g/mL).
Given that the mass (m) is 78.2 g and the volume (V) is 11.4 mL, we can plug these values into the formula:
Density is a physical property that quantitatively expresses how much mass is contained within a given volume of a substance. In other words, it is a measure of how tightly packed the particles or molecules of a material are. Mathematically, density is defined as the mass of an object (or substance) divided by its volume. It is often denoted by the Greek letter "ρ" (rho).
Density is defined as mass per unit volume. The formula for density is:
Density (ρ) = Mass (m) / Volume (V)
Density (ρ) = 78.2 g / 11.4 mL
Now, let's calculate the density:
Density (ρ) = 6.859 g/mL
So, the density of the metal is approximately 6.859 grams per milliliter (g/mL).
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Can someone please help
Answer:
55 km
pls give brainliest hope it help
Explanation:
4. Make new charts for each of the following scenarios. Predict what you think the graphs will
look like, and explain your reasoning.
a. The man starts three meters from the house and accelerates towards the tree.
b. The man stands still while he talks on his cell phone at the middle of the sidewalk, then
walks toward the house at a constant rate trying to get better cell reception. He comes to
a sudden stop when the coverage is good (about a meter before the house) and stands
still to finish his conversation.
c.The man starts close to the house, stands still for a little while, then walks toward the
tree at a constant rate for a while, then the slows to a stop.
Draw a position/time, velocity/time, and a acceleration/time graph for each scenario
What would be the new pressure if 250 cm3 of gas at standard pressure is compressed to a volume of
150 cm3?(
= constant)
V
n
T
Р P.
Initial
Final
Effect
Answer:
P T V n
Initial: 730 mmHg; 298 K; 250 cm³; --
Final: 760 mmHg; 273 K; ?; --
Effect: ↑; ↓; ↓P ↓T; --
250 cm³ x 273 K/298 K x 730 mmHg/760 mmHg = 220 cm³
Explanation:
A plane mirror moves towards the object with a velocity of 2m/s and the object itself moves towards the mirror with a velocity of 5m/s. What is the velocity of the image approaching towards the object..
Answer:
3.33 m/s
Explanation:
1/2 = 1/5 + 1/x
1/x = 1/2 - 1/5
1/x = 5/10 - 2/10
1/x = 3/10
x = 10/3
x = 3.33 m/s
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