The specific heat of water is 4.18 J/gºC. How many Joules of
heat are released to lower the temperature of 150 g water
from 100 °C to 5°C?
Solar radiation bounces off of a polar ice cap, then goes into the atmosphere where it remains trapped. Which
statement best describes this situation?
The radiation is absorbed by the ice and then reflected by the atmosphere.
O The radiation is reflected by the ice and then absorbed by the atmosphere.
O The radiation is absorbed by the ice and atmosphere.
O The radiation is reflected by the ice and atmosphere.
Answer:
b
Explanation:
The radiation is reflected by the ice and then absorbed by the atmosphere.
Answer:
B
Explanation:
I got it right on my assignment
When a guitar string is plucked, what part of the standing wave is found at the fixed ends of the string?(1 point)
the antinodes
the nodes
the resonance
the harmonics
A node is a place on a standing wave where the amplitude is the smallest. When a guitar string is plucked the nodes part of the standing wave is found at the fixed ends of the string.
What is a node?A node is a place on a standing wave where the amplitude is the smallest. The nodes at the ends of a vibrating guitar string, for example, are nodes.
The guitarist alters the effective length of the vibrating string and hence the note played by shifting the location of the terminal node through frets.
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where do the waste products from your house go find out where the rubbish goes and what happens to it?
How many different atoms are there in a compound?
Answer:
2 or more atoms
Explanation:
yes yes yes yes yes yes yes yes
Answer:
Two or more
Explanation:
It's mostly two but unique structures might compose of more than 2
How much work is done on an object by a force of 10.0 N pushing it 5.00 m?
Work is done on an object by a force of 10.0 N pushing it 5.00 m is 50.0 joule.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.
Given parameters:
Force applied on the object is: F = 10.0 N.
Displacement of the object is: d = 5.00 meter.
Hence, Work is done on the object = force × displacement
= 10. N × 5.00 meter
= 50.0 Joule.
So, Work is done on an object by a force of 10.0 N pushing it 5.00 m is 50.0 joule.
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Kerry drops her iPhone accidently as she is standing on an overview. How fast is the iPhone moving after 3s?
Answer:
really fast? xP
Explanation:
Which is the first step in the process during the formation of molded fossils? A Sediment hardens into rock. B Sediment is eroded from rock. C Organisms are buried under sediment.
The first step in the process during the formation of molded fossils is that the sediment is eroded from rock. Thus, the correct option is B.
What is Fossil formation?Fossils are important as they provide important evidence for the evolution and the adaptation of plants and animal species to their environments. Fossil evidence helps in providing the record of how creatures have evolved and how this process can be represented through the help of a tree of life, showing that all the species are related to each other.
Four types of processes which contribute to the formation of a fossil include mineralization, carbonization, encrustation, and distillation. They occur once an organism has become fully trapped within the surrounding sediment, and it primarily depends up on the mineral composition of the silt and water.
Therefore, the correct option is B.
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What must occur within a magnetic material before it exhibts magnetic properties?
a)The material must be of a specific size
b)The material must be charged with electricity
c) The magnetic domains inside the material must be aligned
d) The magnetic material must be created artificially
(real answers only or you will be reported. Thanks to those who help).
a plane travels 400km in 3 hours. what is its speed?
Two cars start moving from the same point on a rectilinear path at the same time, heading to the same destination 90 km away. The first travels at an average speed of 50 km/h and the second at 60 km/h. Deter- mine the time interval separating the arrival of the two cars to their destination.
Answer:
0.3 hour
Explanation:
From the question given above, the following data were obtained:
Distance travelled = 90 km
Speed of 1st car = 50 km/h
Speed of 2nd car = 60 km/h
Time interval separating the two cars =?
Next, we shall determine the time taken for each car to get to the destination. This can be obtained as follow:
For the 1st car:
Distance travelled (d) = 90 km
Speed of 1st car (S₁) = 50 km/h
Time (t₁) =?
Speed = Distance /time
S₁ = d/t₁
50 = 90 / t₁
Cross multiply
50 × t₁ = 90
Divide both side by 50
t₁ = 90 / 50
t₁ = 1.8 hours
For the 2nd car:
Distance travelled (d) = 90 km
Speed of 2nd car (S₂) = 60 km/h
Time (t₂) =?
Speed = Distance /time
S₂ = d/t₂
60 = 90 / t₂
Cross multiply
60 × t₂ = 90
Divide both side by 60
t₂ = 90 / 60
t₂ = 1.5 hours
Finally, we shall determine the time interval separating the arrival of the two cars. This can be obtained as follow:
Time for the 1st car (t₁) = 1.8 hours
Time for the 2nd (t₂) = 1.5 hours
Time interval separating the two cars (tₛ) =?
tₛ = t₁ – t₂
tₛ = 1.8 – 1.5
tₛ = 0.3 h
Thus, the interval separating the arrival of the two cars is 0.3 hour
In each cycle, a heat engine performs 710 J of work and exhausts 1480 J of heat. What is the thermal efficiency?
A) 0.24
B) 0.47
C) 1.7
D) 0.32
Answer:
D) 0.32
Explanation:
The computation of the thermal efficiency is given below:
Thermal efficiency is
= 710 J ÷ (710 J + 1480 J)
= 710 J ÷ 2,190 J
= 0.32
Hence, the thermal efficiency is 0.32
Therefore the last option is correct
Now that you have learned about measuring electricity, complete and submit the following projects Complete the following: 1. Examine at least three different batteries at home or at a store, each with a different voltage. Download the battery chart and fill it in showing the type of battery (alkaline, NiCd, etc), the voltage, the size, and the use for which each battery is designed. Why do you think they are different in size and voltage? 2. Examine two items that use more than one battery, such as a flashlight, a 2-way radio, or a battery operated toy. Look at the arrangement of the batteries in the item. Are they connected in series? For each item, state the number and type of batteries, the voltage of each battery and the total voltage produced. Click on the Activity Buttons below to open the Battery Chart and Measuring Electricity Assignment. Activity Sp C С
Answer:
in the attached documents are the answers i made a 100 on it
Explanation:
Answer:
I fo
Explanation:
I dont see the attachment
1. (I) If a particle undergoes SHM with amplitude 0.18 m,
what is the total distance it travels in one period?
Answer:
The total distance the particle travels in one period is approximately 1.131 m
Explanation:
The Simple Harmonic Motion (SHM) of an object can be conceptualized as the uniform circular motion of the object projected on an axis
Therefore, the amplitude of a SHM which is the largest displacement of the motion from its central or equilibrium position is equivalent to the radius of the circular motion
Therefore;
The amplitude of the SHM, a = 0.18 m = The radius of the equivalent circular motion, r
A period of SHM = The time it takes takes to complete one revolution
Therefore, the total distance traveled in one period = The length of 1 complete revolution = The circumference of the equivalent circle describing the SHM
The circumference of the equivalent circle describing the SHM, C = 2·π·r
By substituting the known value for the radius, 'r', we have;
C = 2·π·r = 2 × π × 0.18 m ≈ 1.131 m
Therefore, the total distance the particle travels in one period ≈ 1.131 m
A 2750 kg helicopter flies horizontally at constant speed. Air resistance creates a 7510 n backward force. What is the magnitude of the lift force created by the propellers
Answer:
Explanation:
Let lift force F be created by propellers at angle of Ф with the horizontal .
The vertical component of this force will balance the weight of helicopter and horizontal component will balance the air resistance .
F sinФ = mg = 2750 x 9.8 = 26950 N
F cosФ = 7510 N
Squaring and adding ,
F² = 26950² + 7510²
= 726302500 + 56400100
= 782702600
F = 27976.82 N .
PLEASE HELP!! I'll mark brainliest for correct answer.
A mouse ran 25 meters in 5 seconds, stopped for 10 seconds to eat a piece of cheese, and finally ran another 5 seconds a distance of 15 meters to its home. Calculate the average speed of the mouse.
Answer:
It ran at an average of 2 meters per second.
Explanation:
_____ type of components is affected by the intensity of light.
Answer:
Explanation:
Some of the factors affecting intensity are: The energetic intensity of the source (the initial volume). The distance from the source (the volume at any point along the path). Any modifying elements in the light path (air, clouds, filters, reflectors, etc.) The factors affecting the intensity of light are diffraction.
Light has three properties: Wavelength, speed, and amplitude. The wavelength determines the type of light (color, etc.). Speed is determined by whether light passes through a vacuum or some material. The more photons emitted per unit time, the greater the intensity of the light. Directly, it is the power that determines the brightness of a bulb. That is why light bulbs have a power rating, i.e. a 60W bulb is enough to light a typical bedroom. But power is determined by the current and voltage which, in turn, is determined by the current.
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The diagram below shows a race car traveling around a racetrack at a constant speed of 150 km/hr.
B
According to the above information and diagram, at which points (if any) is the velocity of the car the same?
O Points A and B
O Points A and C
O Points B and C
O The velocity is not the same at any of the points.
Answer:
point a and c
Explanation:
point a and c
According to the above information and diagram, at Points A and C the velocity of the car is the same, so option B is correct.
What is velocity?When anything is moving, its velocity tells us how quickly that something's location is changing from a certain vantage point and as measured by a particular unit of time.
If a point moves along a path and covers a certain distance in a predetermined amount of time, its average speed over that period of time is equal to the distance covered divided by the travel time. A train traveling 100 kilometers in two hours, for instance, is doing it at an average speed of 50 km/h.
As the car accelerates from point A and decelerate at point B and then again accelerate from point B and gain the highest velocity at point C therefore, the velocity of the car is the same at point A and C.
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A car 4m long moving at a velocity of 25m/s was beside a lorry 20m long with a velocity 19m/s at t=0. The distance between them was 10m. How long will it take the car to overtake the lorry.
which organs could be injured if you broke your ribs select all that apply
A.lungs
B.heart
C.brain
D.spinal column
Answer:
If you break a rib in the middle of your rib cage, the sharp end of bone could puncture a lung. If you break a rib toward the bottom of your rib cage, the sharp end of the bone could cause damage to your liver, kidney, or spleen.
Explanation:
Hope this helped..
a body is thrown at an angle 30°to the horizontal with kinetic energy 40J.atbthe highest point of its motion the kinetic energy will be?
Latitude plays a major role in determining the climate of an area. What causes some areas of Earth to receive less direct solar energy than others?
Answer:
Explanation:
The main cause of different parts of the earth receiving different amounts of solar energy is as a result of the tilt of the Earth. Having different latitudes also play a role in that, as latitudes are used to measure the distances between places on earth(together with longitude) receiving different amounts of solar energy also leads to having different atmospheric circulation. Making some places have more heat, while other places have lesser heat energies. Logically, the areas with higher presence of solar energy are going to be hotter than places with lesser presence of solar energy.
Which of the following tend to orbit the sun in long, narrow ellipses?
A. planets
B. asteroids
C. comets
D. moons
Answer:
C
Explanation:
What is the answer to anything and everything HELP I GIVE BRAINIEST AND LOTS O POINTS
what is latent heat energy's definiton
A snowball is rolling down a grassy hill. Determine what force is causing the object to slow down or speed up. Sketch a free-body diagram, including arrows, force values, and label be sure the label the forces appropriately.
Answer:
Rolling Friction (round object on a flat surface) Speeding up.
Explanation:
Gravity continually pulls something such as a table, roster, or person down from the hill. Thus, when you bounce, gravity makes you to arrive on the territory. Friction, however, doesn't pull something down. Friction, however, doesn't pull something downstairs. ... Also, friction always operates identically to the surface in connection because of the sliding movement.
Which two organisms in the Domain Eukarya can make their own food?
Answer:
Plantae. Also called the Kingdom Metaphyta, the Kingdom Plantae consists of all multicellular, eukaryotic, and photosynthetic organisms on the planet. Being photosynthetic, these organisms are autotrophs and can make their food using the energy from the sun.
What would be the final temperature if you mixed a liter of 40C water with 2 liters of 20C water?
Answer:
I found
33 ∘ C
Explanation:
i hope this helps :)
These pairs of forces are known as ____________-reaction pairs because one pushes against the other with an equal but opposite force.